一般现在时,一般将来时 主将从现
时间状语从句时态原则
时间状语从句时态原则
时间状语从句时态:主将从现。
主将从现是指在时间状语从句、条件状语从句和让步状语从句中，如果主句是一般将来时，从句用一般现在时替代-般将来时。
时态的呼应时态呼应一般来讲，复合句都要遵循主、从句时态呼应规律，状语从句也不例外。
即主句用现在时，从句也用现在时;主句用过去时，从句也用过去的某种时态。
如: Be careful when you cross the road.
过马路时要小心。
You must see the doctor if you are ill.
如果你生病了，你必须去看医生。
主句是一般过去时，从句也要用一般过去时。
如:
When he was seven years old, he could swim.
当他七岁时就会游泳。
She turned off the light before she left the office.
她离开办公室前就关了灯。
主将从现六种情况
1.如果主句是将来时或表示将来含义时，那么条件和时间状语从句多用一般现在时。
2.如果主句是折使句，那么从句通常要用一般现在时。
3.如果主句是含有情志动调的一般现在时，根据需要从句多用一最现在时。
4.如果的条件状语从句遇到变换间接和直接时，折使句应用“to”
5.主将从现说的是在合有时间状语从句和条件状语从向的主从
复合句中，如果主句的时态是一般将来时，那么从句要用一般现在时。
6、如果主句的时态是过去将来时，那么从向要用一般过去时。
2019年中考英语时态知识点：常见的主将从现的四种情况
2019年中考英语时态知识点：常见的主将从现的四种情况主将从现主将从现是指在时间状语从句和条件状语从句和让步状语从句中，如果主句是一般将来时，从句用一般现在时替代一般将来时。
主将从现常见的有以下四种情况：一、时间状语从句的主句是一般将来时，那么从句常常用一般现在时。
如：When I grow up, I’ll be a nurse and look after patients.我长大后要当一名护士，照顾病人。
二、如果主句是祈使句，那么从句通常要用一般现在时如：Don’t laugh at me when I make a mistake.我犯错误的时候不要笑话我。
三、如果主句是含有情态动词的一般现在时，根据需要从句多用一般现在时如：You should be quiet when you are in the reading room在阅览室时应保持安静。
四、如果if的条件状语从句遇到变换间接和直接时 , 祈使句应用not to....如; She said not to close the window常见的时间状语从句的连词有：as soonas,when,while ,as,until等主将从现说的是在含有时间状语从句和条件状语从句的主从复合句中，如果主句的时态是一般将来时，那么从句要用一般现在时。
例如：I will tell him about it when he comes.If it is fine tomorrow, we will go outing.如果主句的时态是过去将来时，那么从句要用一般过去时。
例如：He said that he would have another try if he had the chance.I knew he could help me if he was free the next day.主要标志有：if 、unless 、until、 when 、as soon as。
主句将来时从句用什么时态
如果时间、条件、原因状语从句中主从句的动作发生在将来，则主句用将来时，从句用一般现在时，也就是人们说的主将从现的概念。
in case 和no matter what 引导的状语从句都是按照这个理论。
知识拓展连词when,before,after,if引导的状语从句要特别注意其时态。
1．当主句的谓语动词是一般将来时时，从句要用一般现在时。
如：The boy will be a writer when he grows up.这个男孩长大后将成为一名作家。
I won’t go to school if it rains tomorrow.如果明天下雨我就不去学校。
2．主句的谓语动词是情态动词+动词原形时，从句的谓语动词也用一般现在时。
如：When the lights are red,the traffic must stop.红灯亮时，车辆必须停下。
3．主句是祈使句时，从句也要用一般现在时。
如：Please don’t go to bed before you finish your homework.在完成作业之前，请不要休息。
4．主句谓语用一般过去时时，从句也要用一般过去时。
如：They talked about the party after people left.人们离开后，他们谈论这次晚会情况。
在if、unless等词引导的条件状语从句，when、till/until、as soon as、the time等词引导的时间状语从句，以及the more...the more结构引导的程度状语从句中，当主句中的动词用一般将来时，从句中的动词通常用一般现在时表示将来时间。
有时，也可以在从句中用现在完成时表示将来某一时刻前已完成的动作。
when主将从现的用法
when主将从现的用法When主将从现的用法是指在主句使用一般时态（一般现在时、一般过去时、一般将来时），而在从句使用将来时态（一般将来时、进行时、完成时）的一种语法结构。
这种结构通常用来表示时间上紧接着主句发生的将来的情况或者计划。
以下是一些相关的参考内容来详细说明这种用法。
一、表示定期或安排好的未来事件1. The conference will start when all the participants arrive.（当所有参与者到达时，会议将开始。
）2. I will go to the gym when I finish work.（我下班后会去健身房。
）3. She will call her parents when she arrives at home.（她到家时会给父母打电话。
）二、表示时间条件1. We will visit the museum when it opens next week.（下周博物馆开放时我们会去参观。
）2. When he gets the results, he will decide whether to apply for the job or not.（当他收到结果时，他会决定是否申请这个工作。
）3. I will buy a new car when I have enough money.（当我有足够的钱时，我会买一辆新车。
）三、表示有条件的结果1. When you study hard, you will pass the exam.（当你努力学习时，你会通过考试。
）2. If you water the plants regularly, they will grow well.（如果你定期浇水，植物会生长得很好。
）3. When we eat healthy food, we will improve our health.（当我们吃健康的食物时，我们的健康状况会改善。
主将从现 知识讲解 “主将从现”适用于什么样的从句中
主将从现知识讲解“主将从现”适用于什么样的从句中所谓的“主将从现”第一层次，即“主句用将来时（现在将来时和过去将来时），从句用一般时（一般现在时和一般过去时）”,这一层次也可以称作“初中层次”。
第二层次：“主将”中将来时有将来进行时，将来完成时，将来完成进行时，而“从现”中相应的时态也可能是现在进行时，现在完成时，现在完成进行时。
例如：If the snow has completely stopped, we will be playing with snow on the playground.如果雪能够完全停下来，我们将正在操场上玩雪呢！If it is snowing, we will have been walking in the snow for more than two hours.如果天一直在下雪，我们将在雪地里走了两个多小时了。
另外，引导条件状语从句的连接词（connector）还可以是unless, so long as, in case, on condition that, supposing that, provided that 等。
if引导条件状语从句的两种用法：第一种用法：当某事发生的可能性较大时，这种情况，有个十三字口诀：“主将从现，主过将从过，主现从现”。
即主句是一般将来时，从句用一般现在时；主句用过去将来时，从句用一般过去时；当主句中有can/can’t的话，则从句用一般现在时。
例如：If he has time, he will come tomorrow.If she finishes early, she can come back early.If you don’t do homework, the teacher will scold you.第二种用法：1.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。
主将从现
主将从现是指在时间状语从句和条件状语从句中，如果主句是一般将来时，从句用一般现在时替代一般将来时。
常见的有以下四种情况：一、条件状语从句的主句是一般将来时，那么从句常常用一般现在时如：When I grow up, I’ll be a nurse a nd look after patients我长大后要当一名护士，照顾病人二、如果主句是祈使句，那么从句通常要用一般现在时如：Don’t laugh at me when I make a mistake.我犯错误的时候不要笑话我。
三、如果主句是含有情态动词的一般现在时，根据需要从句多用现在进行时如：You should be quiet when you are in the reading room在阅览室时应保持安静四. 如果if的条件状语从句遇到变换间接和直接时, 祈使句应用not to....如; She said not to close the window别主句与从句：简单而言主句就是问题的中心所在。
一个句子的中心意思体现在主句中。
所以判断主从关系要从意思入手。
或者根据引导词来看，引导词的后面是从句。
定语从句主要修饰名次与代词.主要关系词有;who whom whose which that when where why表语从句置于连系动词后面做表语。
时间状语从句when, whenever, while, as, before, after, since, till, once, as soon as,etc. 地点状语从句where,wherever原因状语从句because, since, as, for, now that, etc.目的状语从句in order that, so that, that, etc.结果状语从句so…that, so that, such…that, that, etc.条件状语从句if, unless, as(so)long as, etc.让步状语从句though, although, even if, even though, however, whatever, as,etc.比较状语从句as…as, so…as, than, e tc.方式状语从句as, as if, as though, etc.。
主将从现——精选推荐
主将从现主将从现主将从现是指在时间状语从句和条件状语从句中，如果主句是一般将来时，从句用一般现在时替代一般将来时。
现在时替代一般将来时。
常见的有以下四种情况：常见的有以下四种情况：一、一、 条件状语从句的主句是一般将来时，那么从句常常用一般现在时条件状语从句的主句是一般将来时，那么从句常常用一般现在时如When I grow up, I ’ll be a nurse and look a er pa ents 我长大后要当一名护士，照顾病人我长大后要当一名护士，照顾病人 二、二、 如果主句是祈使句，那么从句通常要用一般现在时如果主句是祈使句，那么从句通常要用一般现在时如：Don ’t laugh at me when I make a mistake. 我犯错误的时候不要笑话我。
我犯错误的时候不要笑话我。
三、三、 如果主句是含有情态动词的一般现在时，根据需要从句多用一般现在时如果主句是含有情态动词的一般现在时，根据需要从句多用一般现在时如：You should be quiet when you are in the reading room 在阅览室时应保持安静在阅览室时应保持安静 四. 如果if 的条件状语从句遇到变换间接和直接时的条件状语从句遇到变换间接和直接时 , 祈使句应用not to.... 如; She said not to close the window 常见的时间状语从句的连词有：as soon as, when, while ,as ,un l 等主将从现说的是在含有时间状语从句和条件状语从句的主从复合句中，如果主句的时态是一般将来时，那么从句要用一般现在时。
一般将来时，那么从句要用一般现在时。
例如：例如： I will tell him about it when he comes. If it is fine tomorrow, we will go ou ng. 任务I. 请用正确的形式填空。
主将从现 指的是 一些从句里的时态呼应
主将从现指的是一些从句里的时态呼应..在由if，unless ，when，as soon as ,not... until 引导的从句中当主句是一般将来时，祈使句，或者含有情态动词的时候从句用一般现在时初中阶段主将从现的句型就这五个主句三种情况一般将来时祈使句或者含有情态动词的时候从句是一般现在时比如I will go to the park if it ____(not rain) tomorrow.Please tell him the news as soon as he ___(arrive )in Beijing.He should finish the work unless he ____(go) on a trip.在这里主句是祈使句please...所以从句必须是一般现在时arrives因为主句中含有should 情态动词所以从句用一般现在时goes（）2. ---What will Bill do if he __in the test?---He will try again.A. failB. failsC. will failD. is failing() 3. Please tell her the news when she___.OK, I will.() 4. The students will plant trees if it ___ tomorrow.A. didn’trainB. hasn’t rainedC. won’t rainD. doesn’t rain() 5. We__ home if there is no bus.---Oh, what a pity!A. will walkB. have walkedC. walkedD. walk() 6 . If it ___ tomorrow, I’ll go by car.A. rainB. will rainC. rainsD. would rain() 7. If Mary ____ next Sunday, we will go boating together.()8. ---Don’t forget to ask him to write to me.---I won’t. As soon as he____, I’ll ask him to write to you.You can have two days off if your work____(finish) next.首先这句话的关键词是if 而且主句中包含情态动词can 所以从句用一般现在时然后看从句的主语和谓语动词finish的关系是被动关系所以从句用一般现在时的被动语态结构主语+ am/is/ are +过去分词所以答案是is finished( )13. --- Can I go to Beijing for my holiday, Dad?--- You can when you ____ a bit older.A. will getB. getC. are gettingD. got ( )14. If he ____harder, he will catch up with us soon.A. study B. studies C. will study D. studied ( )15. Frank ____ to see his grandma if he ____ free tomorrow.( ) 16.–When will you tell him the good news?--I will tell him about it as soon as he ____ back.A. will getB. getC. are gettingD. got 答语中关键词是when 看主句中有情态动词can 所以从句的时态用一般现在时从句的主语是you 所以动词用原形我先说一下动词时态的题的做题步骤或者做题思路动词时态题首先找句中的时间根据时间确定时态然后再看主语和动词的关系主动关系的话用主动语态被动关系的话用被动语态然后分别按照主动语态和被动语态的结构去寻找答案一般现在时表示一般性习惯性经常性的动作或状态结构主动语态肯定句主语+动词+其他。
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一般现在时练习题一、写出下列动词的第三人称单数形式1. work__________ read__________ clean__________ write__________2. teach__________ wash__________ guess__________ watch__________3. go__________ do___________ fix__________ carry_________4. study__________ fly__________ cry__________ play__________5. have__________一．动词时态填空：1. We often______(play) in the playground.2. He _____(get) up at six o’clock.3. _____you often ______(brush) your teeth every morning.4. What (do) ______he usually (do)______ after school?5. Danny _____(study) English, Chinese, Maths, Science and Art at school.6. Mike sometimes ________(go) to the park with his sister.7. At eight at night, she __________(watch) TV with his parents.8. ________ Mike________(read) English every day?9. How many lessons _________your classmate________(have) on Monday?10. What time _________his mother_________(do) the housework?二．按要求改句子1. Do you often play football after school? (肯定回答)2. I have many books. （改为否定句）3. Gao Shan’s sister likes playing table tennis （改为否定句）4. She lives in a small town near New York. （改为一般疑问句）5. I watch TV every day. （改为一般疑问句）6. David has got a goal. （改为一般疑问句）7. We have four lessons.（否定句）8. Nancy doesn’t run fast （肯定句）9. My dog runs fast.（否定句和感叹句）六、根据要求完成句子1、这个老人每天早上六点钟起床。
The old man _____ _____ at six o’cl ock in the morning every day.2、你从哪里来？Where _____ you from? 或Where _____ you _____ from?我从美国来。
I _____ from America. 或I _____ from America.英语一般将来时练习题:( ) 1. There __________ a meeting tomorrow afternoon.A. will be going toB. will going to beC. is going to beD. will go to be( ) 2. Charlie ________ here next month.A. isn’t workingB. doesn’t workingC. isn’t going to workingD. won’t work( ) 3. He ________ very busy this week, he ________ free next week.A. will be; isB. is; isC. will be; will beD. is; will be( ) 4. There ________ a dolphin show in the zoo tomorrow evening.A. wasB. is going to haveC. will haveD. is going to be( ) 5. –________ you ________ free tomorrow?– No. I ________ free the day after tomorrow.A. Are; going to; willB. Are; going to be; willC. Are; going to; will beD. Are; going to be; will be ( ) 6. Mother ________ me a nice present on my next birthday.A. will givesB. will giveC. givesD. give( ) 7. – Shall I buy a cup of tea for you?–________. （不，不要。
）A. No, you won’t.B. No, you aren’t.C. No, please don’t.D. No, please.( ) 8. – Where is the morning paper?– I ________ if for you at once.A. getB. am gettingC. to getD. will get( ) 9. ________ a concert next Saturday?A. There will beB. Will there beC. There can beD. There are( ) 10. If they come, we ________ a meeting.A. haveB. will haveC. hadD. would have( ) 11. He ________ her a beautiful hat on her next birthday.A. givesB. gaveC. will givingD. is going to giving( ) 12. He ________ to us as soon as he gets there.A. writesB. has writtenC. will writeD. wrote( ) 13. He ________ in three days.A. coming backB. came backC. will come backD. is going to coming back( ) 14. If it ________ tomorrow, we’ll go roller-skating.A. isn’t rainB. won’t rainC. doesn’t rainD. doesn’t fine( ) 15. – Will his parents go to see the Terra Cotta Warriors tomorrow?– No, ________ （不去）.A. they willn’t.B. they won’t.C. they aren’t.D. they don’t.( ) 16. Who ________ we ________ swimming with tomorrow afternoon?A. will; goB. do; goC. will; goingD. shall; go( ) 17. We ________ the work this way next time.A. doB. will doC. going to doD. will doing( ) 18. Tomorrow he ________ a kite in the open air first, and then ________ boating in the park.A. will fly; will goB. will fly; goesC. is going to fly; will goesD. flies; will go( ) 19. The day after tomorrow they ________ a volleyball match.A. will watchingB. watchesC. is watchingD. is going to watch( ) 20. There ________ a birthday party this Sunday.A. shall beB. will beC. shall going to beD. will going to be( ) 21.________ you ________ free next Sunday?A. Will; areB. Will; beC. Do; beD. Are; be( ) 22.He ________ there at ten tomorrow morning.A. willB. isC. will beD. be( ) 23 It ________ the year of the horse next year.A. is going to beB. is going toC. will beD. will is( ) 24 ________ open the window?A. Will you pleaseB. Please will youC. You pleaseD. Do you( ) 25 –Let’s go out to play football, shall we?– OK. I ________.A. will comingB. be going to comeC. comeD. am coming答案：主将从现常见的主将从现的词有as soon as,when,while ,as,until等一、单项选择( ) 1. If you want to learn English well, you must use it as ___ as possible.A. oftenB. longC. manyD. soon ( ) 2. ---What will Bill do if he ____in the test?---He will try again.A. failB. failsC. will failD. is failing( ) 3. Please tell her the news when she_____. OK, I will.A. comesB. will come.C. comeD. would come( ) 4. The students will plant trees if it ___ tomorrow.A. didn’t rainB. hasn’t rainedC. won’t rainD. doesn’t rain( ) 5. We__ home if there is no bus. ---Oh, what a pity!A. will walkB. have walkedC. walkedD. walk( ) 6 . If it _____ tomorrow, I’ll go by car.A. rainB. will rainC. rainsD. would rain( ) 7. If Mary _______ next Sunday, we will go boating together.A. will comeB. comesC. shall comeD. should come( ) 8. --- Don’t forget to ask him to write to me.--- I won’t. As soon as he _______, I’ll ask him to write to you.A. will comeB. cameC. comesD. is coming( ) 9. --- _____ the young girl _____ the old man clean his room every day?--- Yes, she does.A. Does; helpB. Has; helpedC. Did; helpD. Do; helps( ) 10. --- What does Linda often do in the evening?--- She often _______ her homework, but on the evening of March 12 she _______ TV.A. does; watchesB. is doing; watchedC. does; watchedD. is doing; was watching二、用动词的正确形式填空1. If I come, I _______________ ( see ) you.2. If it is fine, we________________( go ) for a walk.3. If it rains, they ______________ ( stay ) at home.4. You will spoil it if you ______________ ( not be ) careful.5. We would be very much pleased if you _______________( come ).6. Will you help me if I _______________ ( need ) you.7. They will get wet if it __________________ ( rain ).8. What a pity I haven’t got my car. If I had, I __________________( take ) you to the airport.9. We would answer if we __________________( can ).10. If you eat too much, you __________________( get ) ill.三、请根据给的线索将下列句子补充完整。