if引导的条件状语从句-与专题练习
if引导的条件状语从句讲解和练习(答案)
t 条件状语从句一、 条件状语从句通常由 if （如果）, unless （除非），as long as （只要）引导。
例如：If it rains tomorrow, we won ’go to the park. 如果明天下雨，我们就不去公园了。
Unless weather stops me, I go for a walk every. 我每天都会去散步，除非遇上坏天气。
Our parents will be pleased with our performance as long as we try our best.小试牛刀：1、只要我们竭尽全力，父母就会满意我们的表现。
Our parents will be pleased with our performance _____ _____ ______ we try our best.2、如果人人为保护环境做出贡献，世界将会变得更美好。
______ ______ ______ _____ _______ to protectingthe environment, the world will become much more beautiful.二、if 引导的条件状语从句（1）“if 从句+祈使句”的句子。
其实，if 作为一个连词，主句也可以是其他形式的句子。
例如：If you want to go, please let me know.If the green light isn ’t on, wait for a minute.(2)“祈使句 + and (or)+ 陈述句” 在意思上相当于一个带有条件状语从句的复合句。
注意：A. “祈使句 + and + 陈述句”可以转化为 if 引导的肯定条件状语从句，而且主语是第二人称。
B. “祈使句 + or + 陈述句”可以转化为 if 引导的否定条件状语从句，而且主语是第二人称。
if引导的条件状语从句与专题练习
if 引导的条件状语从句引导条件状语从句最常用的连词是if ，常见的 if 条件状语从句表示在某条件下某事很可能发生。
如：If you ask me ,I will answer you．If it rains tomorrow, I will stay at home.I will stay at home if it rains tomorrow.另外， if 从句还表示不可实现的条件或根本不可能存在的条件，也就是一种虚拟的条件或假设。
从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。
如：If I were in university ，I would ⋯．If I had enough money ,I would buy a car.1.if 从句用一般现在时，主句用一般将来时If he runs , he’ll get there in time．2.if 从句用一般现在时，主句用 may/might/can/must If the fog getsthicker the plane may/might be diverted.3.if 从句用一般现在时，主句用一般现在时If you heat ice it turns to water. (也可用 will turn)4.if 从句用现在进行时，主句用一般将来时If you are looking for Peter you ’ ll find him upstairs.5.if 从句用现在完成时，主句用一般将来时If you have finished dinner I ’ ll ask the waiter for the bill.一、用所给词的适当形式填空1.If you ________(feel) tired, you _______________ (have) to have arest.3.If there __________(be) fewer trees, there _______________( be) more pollution.5. If Marcia _____________(live) alone, she ___________________( keep) a pet parrot.na ________________( buy) a new dress if the old one____________(be) out of style.9.Peter _____________( send) me a beautiful souvenir if he________________(tour) Spain.10.If Mr Green ___________(say) I am hard- working, my parents_________( feel) glad.11.I ____________(go) to the beach if it________________ ( not rain)this week.13.He ____(write) a letter to his grandparents if he ____(get) his reportcard this week.14. If she ____________(get) up late, she _____________ ( not catch)the early bus.15.Peter ________(major) in English if he ____(pass) the exams in Peking University.16.如果努力学习，你就会取得好成绩。
(完整)if引导的条件状语从句练习题
If条件状从句练习1. If there no buying and selling of animals， there no killing in nature。
A. is; will he B. will be； will be C。
is; is D。
will be； is2. I’m waiting for my friend。
_，I’ll go shopping alone。
A。
If she comes B。
If she won't come C。
If she doesn't come3。
The students ____ have a sports meeting this weekend if it _____.A。
won't；rains B。
will； rains C。
won’t; will rain D. are going to； is going to rain1.If you _____ to the party, you’ll have a great time A。
will go B. went C. go D。
going2.–What are you going to do tomorrow? —-We'll go to the library tomorrow if it ___.A. isn't rain B。
rain C. won’t rain D。
doesn’t rain3。
What will you do if you _____ to the old folk’s home visit?A。
go B。
went C. going D. will go4. If I eat ____ food, I’ll be very fat. A. too many B. many too C。
too muchD. much too5. I’ll give the book to him if he ___ here next Sunday.A。
(完整版)if引导的条件状语从句练习题
if引导的条件状语从句引导条件状语从句最常用的连词是if，常见的if条件状语从句表示在某条件下，某事很可能发生，条件是可能存在的，主句中某种情况发生的概率也是很高的。
如：If you ask him，he will help you．如果你请他帮忙，他会帮你的。
If you fail in the exam，you will let him down．如果你考试不及格，你会让他失望的。
If you have finished the homework，you can go home．如果你作业做完了就可以回家了。
另外，if从句还表示不可实现的条件或根本不可能存在的条件，也就是一种虚拟的条件或假设。
从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。
如：If I were you，I would invite him to the party．如果我是你，我会邀请他参加聚会。
I would have arrived much earlier if I had not been caught in the traffic．要不是交通堵塞，我本会来得早一些。
另外你还要注意if 条件句的时态搭配1．if从句用一般现在时，主句用一般将来时If he runs he’ll get there in time. 如果他用跑的，他就会及时赶到那儿。
The cat will scratch you if you pull her tail. 如果你拉猫的尾巴，它就会抓你。
2．if从句用一般现在时，主句用may/might/canIf the fog gets thicker the plane may/might be diverted. 如果雾在大一些，飞机可能就会改在别的机场降落。
If it stops snowing we can go out. 如果雪停了，我们就可以出去。
3．if从句用一般现在时，主句用must/shouldIf you want to lose weight you must/should eat less bread. 如果你想减肥，你必须少吃面包。
If引导地条件状语从句讲解与练习.doc
If 引导的条件状语从句讲解与练习 If引导条件状语从句的条件状语从句最常用的连词是if，常见的if 条件状语从句表示在某条件下，某事很可能发生，条件是可能存在的。
如： If you ask him，he will help you．如果你请他帮忙，他会帮你的。
If you fail in the exam，you will let him down．如果你考试不及格，你会让他失望的。
If you have finished the homework， you can go home．如果你作业做完了就可以回家了。
1．if从句用一般现在时，主句用一般将来时If he runs he’ll get there in time.如果他用跑的，他就会及时赶到那儿。
The cat will scratch you if you pull her tail.如果你拉猫的尾巴，它就会抓你。
2．if从句用一般现在时，主句用may/might/can/must/shouldIf it stops snowing we can go out. 如果雪停了，我们就可以出去。
If you want to lose weight you must/should eat less bread.如果你想减肥，你必须少吃面包。
(另外，if从句还表示不可实现的条件或根本不可能存在的条件，也就是一种虚拟的条件或假设。
从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。
如： If I were you，I would invite him to the party．如果我是你，我会邀请他参加聚会。
I would have arrived much earlier if I had not been caught in the traffic．要不是交通堵塞，我本会来得早一些。
)If条件状语从句练习( )1. If I find his phone number, I ______ you.A. tellB. toldC. will tellD. have told( )2. I __ the CDs to you if I have time tomorrow.A．will return B. returned C. have returned D. return ( )3. The students will go to the Summer Palace if it ________tomorrow.A. won' t rainB. isn' t rainingC. doesn' t rainD. isn't rain ( )4. I won’t watch the TV play if my father ___ me do my homework.A. letB. will letC. won’t letD. lets( )5. If you ___quiet, I’ll tell you what happened.A. willB. are C are to be D be( )6. If you go to the party, you ___ a good time.A. would haveB. haveC. will haveD. had( )7. Don’t worry. Peter will call you as soon as he _____ London.A. will get toB. gets toC. get toD. got to( ) 8.He doesn’t tell me when he __. I’ll telephone you as soon as he ___.A. will come, comesB. will come, will comeC. comes, will comeD. comes, comes( )9.-- I don’t know if Dr. White ______ to the party next week.–-- I think he will come if he ______ free.A. comes; will comeB. will come; will beC. comes; isD. will come; is( )10. I don’t know if there ____ a sports meeting next month.If they _____ it, I must get ready for it.A. is; will holdB. will be; holdC. will be; will holdD. will have; hold宾语从句练习( ) 1. I don’t know ___________________.A. what does he like bestB. what he like bestC. what he does like bestD. what he likes best( ) 2. Can you tell me ______________________?A. where she livesB. where does she liveC. she lives whereD. where she live( ) 3. He asked me _______________________________.A. what time is itB. what time it isC. what time was itD. what time it was( ) 4. Do you know _______________________?A. how much did it costB. how much it did costC. how much it costsD. how much does it cost( ) 5. The man asked her _______________________.A. why did she do itB. why she did itC. why she doesD. why does she do it( ) 6. Nobody knows _________________________.A. when will she come backB. when she come backC. when she will come backD. when does she come back ( ) 7. Mum asked _______________________________.A. where he wasB. where was heC. where he isD. where is he( ) 8. Do you know _______________________________?A. what they are looking forB. what are they looking for C, they are looking for what D. what do they look for ( ) 9. The teacher asked ________________________________.A, who can answer this questionB. who could answer the questionC. what question did she askD. she answered this question( ) 10. I asked her ______________________________.A. whether he has been to AustraliaB. whether has he been to AustraliaC. whether he had been to AustraliaD. whether he goes to Australia( ) 11. The teacher told us ________________________________.A. that light traveled faster than soundB. if light traveled faster than sound.C. that light travels faster than soundD. if light travels faster than sound( ) 12. He said that __________________________________.A. he is doing his homeworkB. he does his homeworkC. he was doing his homeworkD. he do his homework( ) 13. I asked him _________________________.A. where did he goB. where he wentC. where does he goD. where he did go( ) 14. --Excuse me, could you tell me _____ get to the plane? --Certainly. Go straight alone here.A. how can weB. how we canC. when can weD. when we can( ) 15. Do you know _____he will ride here at 8 tomorrow morning?A. whenB. whereC. whetherD. how( ) 16. --Can you tell me why __________________?--Because I want to help the people there.A. do you go to TibetB. did you go to TibetC. are you going to TibetD. you are going to Tibet ( ) 17. Do you know _______________________________?A. what time does the train leaveB. what time leaves the trainC. what time the train leaveD. what time the train leaves( ) 18. Could you tell me _______________________?A. who is heB. where’s the nearest restaurantC. if he will come tomorrowD. which way is to the underground station( ) 19. --Do you know ___________?--Sorry. I don’t know. You may ask the woman over there.A. when the shop opensB. when is the shop openC. when does the shop openD. when will the shop open ( ) 20 --Dad, do you know ____________? --In half an hour.A. when will the football game startB when the football game will startC. when is the football game going to startD. when shall we start the football game( ) 21. Could you tell me _______________________?A. which bus they are waiting forB. which bus are they waiting forC. they’re waiting for which busD. which bus they wait( ) 22. I asked her __________________________.A. whether did she like the red oneB. whether she likes the red oneC. whether does she like the red oneD. whether she liked the red one( ) 23. Can you guess (猜） __________the people in the picture are ?A. whenB. whomC. whoseD. who( ) 24. I’m thinking about ________________________________.A. if I’ll help herB. whether I’ll help herC. what I’ll help herD. that I help her( ) 25. --We never know _____________. --They say he is a teacher.A. what the old man isB. what is the old manC. who is the old manD. which the old man is10月份语法测试成绩 P40学生缴费日期表。
If 引导地条件状语从句讲解与练习.doc
If 引导的条件状语从句讲解与练习If引导条件状语从句的条件状语从句最常用的连词是if，常见的if 条件状语从句表示在某条件下，某事很可能发生，条件是可能存在的。
如：If you ask him，he will help you．如果你请他帮忙，他会帮你的。
If you fail in the exam，you will let him down．如果你考试不及格，你会让他失望的。
If you have finished the homework，you can go home．如果你作业做完了就可以回家了。
1．if从句用一般现在时，主句用一般将来时If he runs he’ll get there in time.如果他用跑的，他就会及时赶到那儿。
The cat will scratch you if you pull her tail.如果你拉猫的尾巴，它就会抓你。
2．if从句用一般现在时，主句用may/might/can/must/shouldIf it stops snowing we can go out. 如果雪停了，我们就可以出去。
If you want to lose weight you must/should eat less bread.如果你想减肥，你必须少吃面包。
(另外，if从句还表示不可实现的条件或根本不可能存在的条件，也就是一种虚拟的条件或假设。
从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。
如：If I were you，I would invite him to the party．如果我是你，我会邀请他参加聚会。
I would have arrived much earlier if I had not been caught in the traffic．要不是交通堵塞，我本会来得早一些。
)If条件状语从句练习( )1. If I find his phone number, I ______ you.A. tellB. toldC. will tellD. have told( )2. I __ the CDs to you if I have time tomorrow.A．will return B. returned C. have returned D. return( )3. The students will go to the Summer Palace if it ________tomorrow.A. won' t rainB. isn' t rainingC. doesn' t rainD. isn' t rain ( )4. I won’t watch the TV play if my fa ther ___ me do my homework.A. letB. will letC. won’t letD. lets( )5. If you ___quiet, I’ll tell you what happened.A. willB. are C are to be D be( )6. If you go to the party, you ___ a good time.A. would haveB. haveC. will haveD. had( )7. Don’t worry. Peter will call you as soon as he _____ London.A. will get toB. gets toC. get toD. got to( ) 8.He doesn’t tell me when he __. I’ll telephone you as soon as he ___.A. will come, comesB. will come, will comeC. comes, will comeD. comes, comes( )9.-- I don’t know if Dr. White ______ to the party next week.–-- I think he will come if he ______ free.A. comes; will comeB. will come; will beC. comes; isD. will come; is( )10. I don’t know if there ____ a sports meeting next month. If they _____ it, I must get ready for it.A. is; will holdB. will be; holdC. will be; will holdD. will have; hold宾语从句练习( ) 1. I don’t know ___________________.A. what does he like bestB. what he like bestC. what he does like bestD. what he likes best( ) 2. Can you tell me ______________________?A. where she livesB. where does she liveC. she lives whereD. where she live( ) 3. He asked me _______________________________.A. what time is itB. what time it isC. what time was itD. what time it was( ) 4. Do you know _______________________?A. how much did it costB. how much it did costC. how much it costsD. how much does it cost( ) 5. The man asked her _______________________.A. why did she do itB. why she did itC. why she doesD. why does she do it( ) 6. Nobody knows _________________________.A. when will she come backB. when she come backC. when she will come backD. when does she come back ( ) 7. Mum asked _______________________________.A. where he wasB. where was heC. where he isD. where is he( ) 8. Do you know _______________________________?A. what they are looking forB. what are they looking forC, they are looking for what D. what do they look for() 9. The teacher asked ________________________________.A, who can answer this questionB. who could answer the questionC. what question did she askD. she answered this question( ) 10. I asked her ______________________________.A. whether he has been to AustraliaB. whether has he been to AustraliaC. whether he had been to AustraliaD. whether he goes to Australia( ) 11. The teacher told us ________________________________.A. that light traveled faster than soundB. if light traveled faster than sound.C. that light travels faster than soundD. if light travels faster than sound( ) 12. He said that __________________________________.A. he is doing his homeworkB. he does his homeworkC. he was doing his homeworkD. he do his homework( ) 13. I asked him _________________________.A. where did he goB. where he wentC. where does he goD. where he did go( ) 14. --Excuse me, could you tell me _____ get to the plane?--Certainly. Go straight alone here.A. how can weB. how we canC. when can weD. when we can( ) 15. Do you know _____he will ride here at 8 tomorrow morning?A. whenB. whereC. whetherD. how( ) 16. --Can you tell me why __________________?--Because I want to help the people there.A. do you go to TibetB. did you go to TibetC. are you going to TibetD. you are going to Tibet( ) 17. Do you know _______________________________?A. what time does the train leaveB. what time leaves the trainC. what time the train leaveD. what time the train leaves( ) 18. Could you tell me _______________________?A. who is heB. where’s the nearest restaurantC. if he will come tomorrowD. which way is to the underground station( ) 19. --Do you know ___________?--Sorry. I don’t know. You may ask the woman over there.A. when the shop opensB. when is the shop openC. when does the shop openD. when will the shop open ( ) 20 --Dad, do you know ____________? --In half an hour.A. when will the football game startB when the football game will startC. when is the football game going to startD. when shall we start the football game( ) 21. Could you tell me _______________________?A. which bus they are waiting forB. which bus are they waiting forC. they’re waiting for which busD. which bus they wait( ) 22. I asked her __________________________.A. whether did she like the red oneB. whether she likes the red oneC. whether does she like the red oneD. whether she liked the red one( ) 23. Can you guess (猜）__________the people in the picture are ?A. whenB. whomC. whoseD. who( ) 24. I’m thinking about ________________________________.A. if I’ll help herB. whether I’ll help herC. what I’ll help herD. that I help her( ) 25. --We never know _____________. --They say he is a teacher.A. what the old man isB. what is the old manC. who is the old manD. which the old man is40学生缴费日期表。
If引导的条件状语从句讲解与练习
If 引导的条件状语从句讲解与练习If引导条件状语从句的条件状语从句最常用的连词是if，常见的if条件状语从句表示在某条件下，某事很可能发生，条件是可能存在的。
如：If you ask him，he will help you．如果你请他帮忙，他会帮你的。
If you fail in the exam，you will let him down．如果你考试不及格，你会让他失望的。
If you have finished the homework，you can go home．如果你作业做完了就可以回家了。
1．if从句用一般现在时，主句用一般将来时If he runs he’ll get there in time.如果他用跑的，他就会及时赶到那儿。
The cat will scratch you if you pull her tail.如果你拉猫的尾巴，它就会抓你。
2．if从句用一般现在时，主句用may/might/can/must/shouldIf it stops snowing we can go out. 如果雪停了，我们就可以出去。
If you want to lose weight you must/should eat less bread.如果你想减肥，你必须少吃面包。
(另外，if从句还表示不可实现的条件或根本不可能存在的条件，也就是一种虚拟的条件或假设。
从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。
如：If I were you，I would invite him to the party．如果我是你，我会邀请他参加聚会。
I would have arrived much earlier if I had not been caught in the traffic．要不是交通堵塞，我本会来得早一些。
)If条件状语从句练习( )1. If I find his phone number, I ______ you.A. tellB. toldC. will tellD. have told( )2. I __ the CDs to you if I have time tomorrow.A．will return B. returned C. have returned D. return( )3. The students will go to the Summer Palace if it ________tomorrow.A. won' t rainB. isn' t rainingC. doesn' t rainD. isn' t rain ( )4. I won’t watch the TV play if my father ___ me do my homework.A. letB. will letC. won’t letD. lets( )5. If you ___quiet, I’ll tell you what happened.A. willB. are C are to be D be( )6. If you go to the party, you ___ a good time.A. would haveB. haveC. will haveD. had( )7. Don’t worry. Peter will call you as soon as he _____ London.A. will get toB. gets toC. get toD. got to( ) 8.He doesn’t tell me when he __. I’ll telephone you as soon as he ___.A. will come, comesB. will come, will comeC. comes, will comeD. comes, comes( )9.-- I don’t know if Dr. White ______ to the party next week.–-- I think he will come if he ______ free.A. comes; will comeB. will come; will beC. comes; isD. will come; is( )10. I don’t know if there ____ a sports meeting next month. If they _____ it, I must get ready for it.A. is; will holdB. will be; holdC. will be; will holdD. will have; hold宾语从句练习( ) 1. I don’t know ___________________.A. what does he like bestB. what he like bestC. what he does like bestD. what he likes best ( ) 2. Can you tell me ______________________?A. where she livesB. where does she liveC. she lives whereD. where she live( ) 3. He asked me _______________________________.A. what time is itB. what time it isC. what time was itD. what time it was( ) 4. Do you know _______________________?A. how much did it costB. how much it did costC. how much it costsD. how much does it cost( ) 5. The man asked her _______________________.A. why did she do itB. why she did itC. why she doesD. why does she do it( ) 6. Nobody knows _________________________.A. when will she come backB. when she come backC. when she will come backD. when does she come back ( ) 7. Mum asked _______________________________.A. where he wasB. where was heC. where he isD. where is he( ) 8. Do you know _______________________________?A. what they are looking forB. what are they looking forC, they are looking for what D. what do they look for () 9. The teacher asked ________________________________.A, who can answer this questionB. who could answer the questionC. what question did she askD. she answered this question( ) 10. I asked her ______________________________.A. whether he has been to AustraliaB. whether has he been to AustraliaC. whether he had been to AustraliaD. whether he goes to Australia( ) 11. The teacher told us ________________________________.A. that light traveled faster than soundB. if light traveled faster than sound.C. that light travels faster than soundD. if light travels faster than sound( ) 12. He said that __________________________________.A. he is doing his homeworkB. he does his homeworkC. he was doing his homeworkD. he do his homework( ) 13. I asked him _________________________.A. where did he goB. where he wentC. where does he goD. where he did go( ) 14. --Excuse me, could you tell me _____ get to the plane?--Certainly. Go straight alone here.A. how can weB. how we canC. when can weD. when we can( ) 15. Do you know _____he will ride here at 8 tomorrow morning?A. whenB. whereC. whetherD. how ( ) 16. --Can you tell me why __________________?--Because I want to help the people there.A. do you go to TibetB. did you go to TibetC. are you going to TibetD. you are going to Tibet ( ) 17. Do you know _______________________________?A. what time does the train leaveB. what time leaves the trainC. what time the train leaveD. what time the train leaves( ) 18. Could you tell me _______________________?A. who is heB. where’s the nearest res taurantC. if he will come tomorrowD. which way is to the underground station( ) 19. --Do you know ___________?--Sorry. I don’t know. You may ask the woman over there.A. when the shop opensB. when is the shop openC. when does the shop openD. when will the shop open ( ) 20 --Dad, do you know ____________? --In half an hour.A. when will the football game startB when the football game will startC. when is the football game going to startD. when shall we start the football game。
if条件状语从句练习题及答案
if条件状语从句练习题及答案If条件状语从句练习题及答案条件状语从句是英语中常用的一种从句结构，用来表示某个条件成立时，另一个事件或结果也将发生。
掌握条件状语从句的用法对于提高英语口语和写作能力非常重要。
下面将给出一些条件状语从句的练习题及答案，帮助读者更好地理解和掌握这一语法知识。
练习题一：1. If it rains tomorrow, ___________.2. She will be late for work if ___________.3. If I see him, ___________.4. If you don't study hard, ___________.5. If I were you, ___________.练习题二：1. If you ___________ to the party, please bring a gift.2. If I ___________ you, I would apologize.3. If she ___________ the exam, she will be very happy.4. If it ___________ tomorrow, we will go hiking.5. If he ___________ the bus, he will be late for the meeting.答案一：1. we will stay at home.2. she misses the bus.3. I will say hello.4. you will fail the test.5. I would study harder.答案二：1. come2. were3. passes4. doesn't rain5. misses通过以上练习题，我们可以发现条件状语从句的用法和特点。
首先，在条件状语从句中，通常使用的连词有if、unless、provided that等。
(完整版)if引导的条件状语从句练习题
If条件句专练I单项选择1. If he hard, he will get good grades。
A. study B。
studiesC。
will study D. studied2。
I want to know if Mary to the party tomorrow。
A。
go B. wentC。
will go D. goes3. Everyone must dress up。
If you ， they won't let you in。
A。
don’t B。
won'tC。
can’t D。
mustn’t4. Mary will go to Sanya if she a five-day trip。
A. haveB. hadC. will have D。
has5. If he comes late，he will miss the train.A. andB. soC。
/ D。
orII用所给词的适当形式完成句子1。
If Bruce ________（be) free, Let’s go to the park。
2。
Tell him the news if you ________ ( meet ) him tomorrow.3. If he ________(do) well in the exam。
His teacher will be pleased withhim.4．If Mary ______（leave ) home too long, she ________(miss） her parents.5. Be quick ,and you _________(arrive） in time。
6. Hurry up， or you_________(be ） late for school。
III完成句子1.如果他到的晚了会发生什么事情?What _______________ if he _____________ late？2.如果努力学习，你就会取得好成绩。
if引导的条件状语从句精讲与专题练习
if引导的条件状语从句精讲与专题练习If you study hard。
you understand the lesson。
如果你用功研究，你就能理解这节课。
If it rains tomorrow。
we will stay at home。
如果明天下雨，我们会呆在家里。
If you don't hurry。
you will miss the train。
如果你不赶快，你会错过火车。
If I had more money。
I would buy a car。
如果我有更多的钱，我就会买一辆车。
If she had studied harder。
she would have passed the exam。
如果她研究更努力一些，她就能通过考试。
When using if to introduce a nal clause。
it is important to pay n to the tense of the main clause。
The tense used in the main clause should match the intended meaning of the sentence。
Forexample。
if the nal clause is in the present tense。
the main clause can use the future tense。
may/might/can。
must/should。
or present tense.如果你感到累了，你必须休息。
2.If it ___________(rain) tomorrow。
we __________(stay) at home。
如果明天下雨，我们会呆在家里。
3.If you ___________(not finish) your homework。
you__________(not go) out to play.如果你没有完成作业，你不能出去玩。
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if引导的条件状语从句
引导条件状语从句最常用的连词是if，常见的if条件状语从句表示在某条件下某事很可能发生。
如：
If you ask me ,I will answer you．
If it rains tomorrow, I will stay at home.
I will stay at home if it rains tomorrow.
另外，if从句还表示不可实现的条件或根本不可能存在的条件，也就是一种虚拟的条件或假设。
从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。
如：
If I were in university，I would …．
If I had enough money ,I would buy a car.
1.if从句用一般现在时，主句用一般将来时
If he runs , he’ll get there in time．
2.if从句用一般现在时，主句用may/might/can/must
If the fog gets thicker the plane may/might be diverted.
3.if从句用一般现在时，主句用一般现在时
If you heat ice it turns to water. (也可用will turn)
4. if从句用现在进行时，主句用一般将来时
If you are looking for Peter you’ll find him upstairs.
5.if从句用现在完成时，主句用一般将来时
If you have finished dinner I’ll ask the waiter for the bill.
一、用所给词的适当形式填空
1.If you ________(feel) tired, you _______________ (have) to have a rest.
3. If there __________(be) fewer trees, there _______________( be) more pollution.
5. If Marcia _____________(live) alone, she ___________________( keep) a pet parrot.
6. Lana ________________( buy) a new dress if the old one ____________(be) out of style.
9. Peter _____________( send) me a beautiful souvenir if he ________________(tour) Spain.
10. If Mr Green ___________(say) I am hard- working, my parents _________( feel) glad.
11.I ____________(go) to the beach if it________________ ( not rain) this week.
13.He ____(write) a letter to his grandparents if he ____(get) his report card this week.
14. If she ____________(get) up late, she _____________ ( not catch) the early bus.
15. Peter ________(major) in English if he ____(pass) the exams in Peking University.
16. 如果努力学习，你就会取得好成绩。
If you__________ _________, you ___________ good _____________.
17. 他如果看电视太久了，他的父母会不高兴。
If he _________ TV too much, his parents __________ __________ unhappy.
18. 如果我们为他组织生日聚会，大家都会来的。
Everyone ________________ if we _____________ a birthday party __________ him.
19. 如果明天不下雨，我会和你一起去公园的。
If it __________ __________ tomorrow, I ______________ go to the park _________ you.
21. 如果他有空，他会帮助你的。
If he _________________, he _________________ you.
23. 你如果抄同学的作业就不能学好各门功课。
You _______ _____ good at all the subjects if you ______ the other students’ homework.
Ⅰ.单项选择
1.If you _____ to the party, you’ll have a great time. A. will go B. went C. go D. going
2. It will be a long time ____ Peter _____ his work.
A. since, has finished
B. after, finishes
C. when, will finish
D. before, finishes.
3. What will father _____ us from Japan? A. take B. bring C. carry D. make
4. Weifang is famous ______ kites. A. for B. to C. on D. with
5．I ____ her the answer if she ____me.
A. can tell, will ask
B. will tell, will ask
C. would tell, ask
D. will tell, asks
6. – What are you going to do tomorrow?
--We’ll go to the library tomorrow if it ___.
A. isn’t rain
B. rain
C. won’t rain
D. doesn’t rain
7.—Do you know when he will come back tomorrow?
--Sorry, I don’t know. When he ____ back, I’ll tell you.
A. comes
B. will come
C. come
D. may come
8. What will you do if you _____ to the old folk’s home visit?
A. go
B. went
C.going
D. will go
9. If I eat ____ food, I’ll be very fat.
A. too many
B. many too
C. too much
D. much too
10. I’ll give the book to him if he ___ here next Sunday.
A. will come
B. comes
C. is coming
D. came
11. There ____an English film in our school tomorrow.
A. is going to have
B. will have
C. is going to be
D. has
12. Could you tell us where ____？
A. will the next Olympic Games held
B. the next Olympic Games will be held
C. would the next Olympic Games be held
D. the next Olympic Games would be held
13. When my mother returned last night, I ____ a book.
A. read
B. am reading
C. was reading
D. am going to read
14.What ____ you ____ when it began to rain?
A. do, do
B. were, doing
C. are, doing
D. did, do
15. I’ll wake you up when he ____back.
A. will
B. is going to come
C. comes
D. come
1---5 CDBAD 6---10 DAACB 11---15 CBCBC。