初中英语语法——If引导的条件状语从句(讲解及练习)
(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引导条件状语从句的详细用法解答
I（一）f引导条件状语从句的详细用法解答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。
(完整word版)初中英语If引导条件状语从句
初中英―― if 引的条件状从句在 if 引的条件状从句中， if 和条件句地点灵巧，可直接放在主句后边，若 if 条件句放句首，从句后边要加逗号，和主句分开。
要注意前后一致原 .引条件状从句的接主要有： if( 假如）、unless（除非）或 as long as（只需）等。
unless在乎思上等于 if...not。
一、条件状从句用法1、引条件状从句最常用的是if, 由 if 引的条件状从句表示在某种条件下某事很可能生。
如：If you ask him, he will help you.假如你他帮忙 ,他会帮你的。
If you fail in the exam, you will let him down.假如你考不及格 ,你会他绝望的。
此外 ,if 从句表示不行的条件或根本不行能存在的条件 ,也就是一种虚的条件或假 ,从句多用一般去或去达成。
如 :If I were you, I would invite him to the party.假如我是你 ,我会邀他参加聚会。
2、 unless = if...not. 除非 ,若不 ,除非在⋯⋯的候比如：Let's go out for a walk unless you are too tired.=If you are not too tired, let's go out for a walk.Unless it rains, the game will be played.除非下雨 ,比将照旧行。
二、在条件状从句中，要注意“主将从”的定，即主句用一般未来，从句用一般在表示未来。
例句：I will come to see you if I have time.我有，我就来看你。
三假如 if 条件句的是重复生和示要生的情形和事件，主从句大多用一般在。
如：If bears are in danger ,they attack people.区提示if 既能够引条件状从句，表示“假如”，也能够引从句，表达“是否”。
人教版中考英语语法知识点If+引导的条件句+练习
语法专题：条件状语从句（1）if条件句：有可能性结果发生的行动，在这些句子中，动词的时态是不同的，if 引导的条件状语从句中，主句用一般将来时态，从句用一般现在时态（主将从现）If it doesn’t rain（从句）, we’ll have a picnic tomorrow（主句）.We’ll have a picnic tomorrow, if it doesn’t rain.（if引导的从句可置前可置后）（2）主祈从现（祈使句+if+一般现在时态）Put up your hands if you have any questions to ask. 如果你们有问题问的话，请举手。
当主语是you时，if 引导的条件状语从句可以与”祈使句+and/ or +简单句”进行句型转换。
And 表示句意顺承，or 表示转折，意为”否则”。
Take care , or you will fall off the tree. = If you don’t take care, you’ll fall off the tree. 小心，否则你会从树上掉下来。
（3）主情从现（情态动词+if +一般现在时态）If I get there early, I can see the doctor quickly.（4）句型：will do式be going to do式肯定从句If主语+动词+其他, 主语+will(won’t) do+其他. If主语+动词+其他, 主语+be(be not) going to do+其他.否定从句If主语+be+not+其他, 主语+will(won’t) do+其他. If主语+be+not+其他, 主语+be(be not) going to do+其他.If主语+don't/ doesn't +动词原形+其他, 主语+will(won’t) do+其他. If主语+don't/ doesn't +动词原形+其他, 主语+be(be not) going to do+其他.If the picture is silly, strange and colourful, you will remember it better.If I have time, I am going to visite you .I will go to the park if it doesn’t rain tomorrow . I won't go to the park if it rains tomorrow.专题精讲实战演练题型1：单项选择( ) 1. If the robot ___________ wrong，you can get a new one for free or get all your money back.A. wentB. goesC. would goD. will go ( ) 2. —We’ll go for a picnic if it ___________ on Sunday.—Wish you a lovely weekend.A. rainB. doesn’t rainC. won’t rainD. rains ( ) 3. I’ll do it better if the teacher ___________ me another chance.A. giveB. givesC. gaveD. will give( ) 4. If a polar bear ___________, it ___________ fish from the waterA. will be hungry；catchesB. is hungry；will catchB. is going to be hungry；catches D. is hungry；won’t catch( ) 5. If our government ___________ attention to controlling food safety now, our health ___________ in danger.A. won’t pay; isB. doesn’t pay; isC. won’t pay; will beD. doesn’t pay; will be( ) 6. We will go for a picnic if it___________ tomorrow.A. doesn’t rainB. wasn’t rainyC. won’t rainD. wasn’t raining( ) 7. If the pure water is heated to 100 centigrade degrees, it___________ boil.A. is going toB. willC. wouldD. is to ( ) 8. She will go to America___________ she has much free time and money.A. as long asB. butC. thoughD. although( ) 9. We will go to the West Lake___________ it doesn’t rain heavily tomorrow.A. ifB. unlessC. as long asD. once ( ) 10. I won’t call you, ___________ something unexpected happens.A. unlessB. whetherC. becauseD. While Keys: 1-5 BBBBD 6-10ABAAA题型2：以所给词的正确形式填空1. If he ________ (study) hard, he will get good grades.2. Everyone must wear uniforms. If you don't, they ___________ (let) you in.3. If you stand at the top of the mountain, you _________ (see) the view of the whole city.4. My grandfather will wear a pair of glasses if he__________ (read) newspapers.5. Please turn off the light if you ________ (leave) the classroom.6. We’ll go for a picnic unless it ________(rain) this Sunday.7. Mr Smith ________ (let) you know if he needs help.8. If you walk along the street, you ________ (see) many foreigners.9. If Mary ________ (ask) me for help，I will try my best to help her.10. I don't know if it will snow tomorrow. If it_______ (snow)，we'll make snowmen. Keys:1. Studies 2.won’t let 3. will see 4. reads 5.leave6.doesn’t rain7.will let8.will see9. asks 10.snows直击中考题型1：单项选择( ) 1.—I wonder if your wife ________ to the party.—If your wife _________, so will mine.A. will go, goB. will go, goesC. goes, will goD. will go, will go ( ) 2. If he _________ in half an hour, we _________ wait for him.A. won't come, won'tB. won't come, don'tC. doesn't come, won'tD. will come, don't ( ) 3. I will send you an e-mail as soon as I_________ in Canada.A. arriveB. arrivedC. am arrivingD. will arrive( ) 4. If there ________ no buying and selling of animals, there _________ no killing in nature.A. is; will beB. will be; will beC. is; isD. will be; is ( ) 5. You can’t watch TV ________ you finish your homework.A. beforeB. ifC. whileD. asKeys:1-5:ACAAA。
初二英语状语从句中if引导的条件状语从句解析
初二英语状语从句中if引导的条件状语从句解析【考纲解读】1.掌握各种条件状语从句，如本文中的if引导的条件状语从句。
2. 正确使用各种状语及其时态。
3. 掌握条件状语中“主将从现”的用法。
【知识点梳理】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引导的条件状语从句(讲义及解析)
if引导的条件状语从句（讲义及解析）状语用来表示行为发生的时刻、地点、目的、方式、程度等，通常由副词或介词短语充当，也可由一个句子充当。
I slept at home yesterday because I had a bad cold.状语从句状语从句指句子作状语。
依照其作用可分为时刻、地点、缘故、条件、目的、结果、让步、方式等从句。
状语从句一样由连词(从属连词)引导。
I will go to school by bike tomorrow if it is sunny.Grammar focus—I think I’ll take the bus to the party.—If you do, you’ll be late.If you take the bus to the party, you’ll be late.—I think I’ll stay at home.—If you do, you’ll be sorry.If you stay at home, you’ll be sorry.—What will happen if they have the party today?—If they have it today, half the class won’t come.—Should we ask people to bring food?—If we ask people to bring food, they’ll just bring potato chips and chocol ate.if 在本单元句中意为“；”，用于引导即 if 引导的是一个完整的句子，因此一定要有主谓，成为从句，另一个句子则成为主句。
If you go there, I’ll go, too.We will go hiking if it doesn’t rain tomorrow.If Bob leaves tomorrow, I will hold a party for him tonight.if 引导的条件状语从句既能够放在主句前，也可放在主句后。
2023年中考英语语法专题讲解之If条件从句总结及练习
if/whether引导的宾语从句，
从句与主句的时态保持一致； 即主句一般现在时，从句用 任意时态；主句过去时，从 句用与过去的某一种时态
我想知道他是否是对的。 I wonder whether he is right or not. =I wonder if he is right.
4. Don’t leave until he _B__ back. A have come B comes C will come 5 －Tell him about the news when he __A__ , John. － Yes, I will. A comes B will come C is coming
shopping or tidy the room.
4.宾语从句提前时：
Whether this is true or not, I can’t say.
5.在动词discuss后的宾语从句中:
We discussed whether we would have a sports meeting next week.
2. I will go swimming with you if I
_C__ free tomorrow.
A will be B was C am
3. If you _C__ a chance to study in a
foreign country, just take it .
A getting B will get C get
用if不用whether的情况:
1.引导否定概念的宾语从句时：
He asked me if I hadn’t finished my homework.
Module5-Module6if引导条件状语从句讲解及练习九年级英语上册
If引导的条件状语从句的讲解与练习一、if从句的位置if引导的从句可以放在主句之前，也可以放在主句之后。
Eg: If you do not feel well, go to see the doctor.Go to see the doctor if you do not feel well.二、if从句的类型：1.if从句+祈使句(表建议: 如果......就......)主祈从现Eg: If you want to go to the cinema, call me.2.if从句，主语+will(not) +V.(动词原形)主将从现Eg: If you start now, you'll finish it before dinner.If it is sunny tomorrow, we will go for a picnic.3.if从句，主语+may(might)/could+V.(动词原形)主情从现Eg: If you work hard, you might not make so many mistakes.即学即练一、单项选择。
1.If you _____ to the party, you’ll have a great timeA. will goB. wentC. go2. I ____ her the answer if she ____me.A. can tell, will askB. will tell, will askC. would tell, askD. will tell, asks3 – What are you going to do tomorrow? —We’ll go to the library tomorrowif it ___.A.isn’t rainB. rainC. won’t rainD. doesn’t rain4. What will you do if you _____ to the old folk’s home visit?A. goB. went D. will go5. If I eat ____ food, I’ll be very fat.A. too manyB. many tooC. too muchD. much too6. I’ll give the book to him if he ___ here next Sunday.A. will eB. esC. is ingD. Came7. Our world will get better and better each of us lives a greener life.A. beforeB. ifC. thoughD. until8. If he ________hard, he will get good gradesA. studyB. studiesC. will studyD. studied9. I want to know if Mary________ to the party tomorrow.A. goB. wentC. will goD. goes10. Everyone must dress up. If you_______ ,they won’t let you in.A. don’tB. won’tC. can’tD. mus tn’t11. Johnson won't answer the phone if he _______ the number.A. knewB. doesn't knowC. will knowD. didn’t know12. If Nancy_____the exam, she will go to Australia for English study.A. passB. passedC. passesD.will pass13. There will be less pollution more people use publictransportation.A.butB.thoughC.unlessD. if二、用所给词的适当形式填空。
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条件句从句主句真实一般现在时一般将来时情态动词+动原祈使句非真实一般过去时be动词用（were）would/could+动原初中英语――条件状语从句（讲解&练习）Ⅰ条件状语从句的定义Ⅱ条件状语从句的引导词1.if引导的条件状语从句：表示在某种条件下某事很可能发生。
If we pay much attention to the earth, we'll have a better world.如果我们多关爱地球，就会拥有一个更美好的世界If it rains tomorrow, what shall we do?如果明天下雨，我们怎么办？注意：if还可以引导虚拟条件句，表示不可实现的条件，从句中多用一般过去时或过去完成时。
What would happen if there were no water ?如果没有水会怎样？2.unless引导的条件状语从句，unless的意思是如果不，除非。
可与if...not互换。
You will fail in English unless you work hard.你英语考试会不及格的，除非你更加努力。
3.as /so long as引导的条件状语从句：as /so long as意思是“只要”So long as you're happy,i will be happy.只要你高兴，我就高兴。
Ⅲ条件状语从句的种类Ⅳ条件状语从句的时态原则用法例句①主句为一般将来时态，if从句用一般现在时态（即主将从现）。
We will stay at home if it rains tomorrow.如果明天下雨，我将要呆在家。
②主句中含有情态动词，if从句用一般现在时态。
If you finish your homework, you can go home now.如果你做完了作业，你现在可以回家了。
③主句为祈使句，if从句用一般现在时态。
Don’t jump into the river if you feel very hot. 如果你感到很热，不要跳入河里。
④主句为过去将来时，if从句用一般过去时态（如果涉及到be动词，一律都用were）。
此时，表达的是和现实相反的推测，用虚拟语气。
If I were you, I wouldn’t do it like that.如果我是你，我就不会那么做的。
If you gave me some money, I would be very happy. 如果你给我一些钱，我就会很高兴的。
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.(2)“祈使句 + and (or)+ 陈述句”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。
例如：1.Study hard and you will pass the exam.=If you study hard, you will pass the exam.2. Hurry up, or you’ll be late. =If you don’t hurry up, you’ll be late.考题：Work hard，________ you may catch up with your classmates soon.A.orB.butC.andD.yet小试牛刀：用 if 连接下列句子1、Go to bed early and you will have a good rest.2、Hurry up, or you’ll miss the bus.注意：学习" if " 引导的条件状语从句的用法,现在总结一下:if 条件句不一般,几个要点记心间;条件句,放在前, 逗号要放句中间。
条件句表真实，主将从现要遵从；条件句非真实，虚拟语气用到位。
【边学边做】用括号内所给词的正确形式填空。
1. What will you buy if you ________（have）a lot of money?2. If it ________（not snow）tomorrow, we will feel unhappy.3. You mustn’t go to school if you ________（be）still in bed.4. If he _______（be）at home at that time, he would know it.5. Please show me the way if you ________（know）it.6. You will hurt your teeth if you ________（eat）too much candy.7. If you gave me a toy car, I _________（be）very happy.8. I would get the prize if I _________（work）hard.练习Ⅰ.单项选择（）1.If you _____ to the party, you’ll have a great time.A. will goB. wentC. goD. going（）2. I ____ her the answer if she ____me.A. can tell, will askB. will tell, will askC. would tell, askD. will tell, asks（）3. – What are you going to do tomorrow?--We’ll go to the library tomorrow if it ___.A. isn’t rainB. rainC. won’t rainD. doesn’t rain（）4. What will you do if you _____ to the old folk’s home?A. goB. wentC. goingD. will go（）5．I’ll give the book to him if he ___ here next Sunday.A. will comeB. comesC. is comingD. cameⅡ.用所给词的适当形式填空6..If you ________(feel) tired, you _______________ (have) to have a rest.7. Where _______ he _______(see) the film if he _____________(have) time?8. If there _______(be) fewer trees, there ____________( be) more pollution.9. If Marcia ________(live) alone, she ________________( keep) a pet parrot.11. Lana _________( buy) a new dress if the old one ________(be) out of style.12.The twins ______________(fight) if they_______________(argue).13. I _______(have) a bake sale if I __________(need) money for education.14. Peter _______( send) me a beautiful souvenir if he ________(tour) Spain.15. I ____________(go) to the beach if it_________ ( not rain) this week.17. _____they _______( have) a match if the P.E. teacher __________(be) busy?18. If she ____________(get) up late, she _________ ( not catch) the early bus.Ⅲ.翻译下列句子19..如果他到的晚了会发生什么事情？What _______________ if he _____________ late?20. 如果努力学习，你就会取得好成绩。
If you__________ _________, you good marks.21. 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.22. 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.23. 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.24. 如果她睡过头了，就会旅游迟到的。
She;__________________________ the trip if she ___________________.25. 如果他有空，他会帮助你的。
If he _________________, he _________________ you.26. 如果Tom考试不及格，他就没有机会上高中了。
Tom ______have the _____to go to the _____high school if he _____ the exams.。