if when 主将从现

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主将从现 WPS演示 演示文稿

主将从现 WPS演示 演示文稿

如果你去参加聚会,你将会过的很愉快If you go to the party, you will have a great time.如果明天不下雨,我们将去公园Unless it rains tomorrow, we will go to the park.我一到上海我就给你打电话。

I will call you as soon as I arrive in shanghai.当我长大的时候,我打算做一名篮球运动员。

When I grow up ,I am going to be a basketball player.主将从现通常用在时间状语从句、条件状语从句和让步状语从句中。

主要标志有:if\unless \until\when \as soon as用法一、主将从现1.Can I take Lisa to the aquarium tomorrow? If she________ there, she _______ a good time.A. goes; hasB. will go; hasC. will go; will haveD. goes; will have2.If it ________ this Saturday, we ________ for a picnic.A. won’t rain;shall goB. doesn’t rain; will goC. isn’t rain; goD. doesn’t rain; go如果明天是晴天,让我们去钓鱼吧。

If it is sunny tomorrow,let's go fishing.用法er、祈使句表将来如果明天是晴天,让我们去钓鱼吧。

If it is sunny tomorrow,let's go fishing.1. Don’t talk loudly at the meeting. If you ________, youAwill have to leave.A. doB. areC. did2.Put your hands behind your back. Don’t speak. We’llB_____ in ten minutes.A. backB. be backC. are backD. are back to you3.—Look at the noisy kids!—Haven’t you heard the saying “When the cat is away,Dthe mice ______?”A. playB. playedC. are playingD. will play4.If there is any change to the plan, I ______ you as soon asDpossible.A. toldB. have toldC. tellD. will tellA5..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; isIf 表如果主将从现if或whether表“是否”随题意常用将来时我不知道她明天是否去参加聚会。

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

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

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。

主将从现常见的有以下六种情况

主将从现常见的有以下六种情况

常见的有以下六种情况:一、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如:When I grow up, I will be a nurse and look after patients/ I want to 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 soon as,when,while ,as,until等五、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.六、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等If引导的条件句(if翻译成"如果"的时候)Ⅰ.(if 从句) 主句v./ v.三单will+v.Ⅱ. if+sb+v./ v.三单can+v.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。

条件状语从句和时间状语从句与主句时态一致的情况

条件状语从句和时间状语从句与主句时态一致的情况

条件状语从句和时间状语从句与主句时态一致的情况主从复合句中时态一致“主过从过;主将从现;主现从任”原则主从复合句中时态的一致是中考考点之一..主要有以下几种情况:主将从现在以when;after;as soon as等引导的时间状语从句以及以if;unless等引导的条件状语从句中;如果主句是一般将来时;从句则用一般现在时..例如:I'll tell her the good news when she comes back.当她回来的时候;我将把这个好消息告诉她..If it doesn't rain; he will come here on time.如果不下雨;他会按时来这儿的..常见的有以下三种情况: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 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..主过从过在含有宾语从句的主从复合句中;当主句的谓语动词为过去时态时;从句须用表示过去的某种时态..例如:He asked when they would go to the party.他问他们什么时候将去参加聚会..Miss Green said she had been to Beijing before.格林小姐说她以前曾经去过北京..主现从任在宾语从句中;当主句的时态为一般现在时、现在进行时、现在完成时等时态时;后面从句时态不受主句限制;可根据情况;选用各种适合的时态..例如:Do you know when we'll have a football match 你知道我们什么时候举行足球赛吗You know he has gone to Shanghai.你知道他已去上海了..特别关注1.当宾语从句表述的是客观事实、科学真理、现在的习惯动作以及格言等时;其时态不受主句限制;而用一般现在时..例如:The teacher told us that light travels faster than sound.老师告诉我们光速比音速要快..When I was a student; my teacher often told us that time and tide wait for no man.当我还是学生的时候;老师常常告诉我们;岁月不等人..2.在"since+点时间"句型中;主句通常用现在完成时;从句用一般过去时..例如:He has worked at the factory since he came here.自从他来到这儿;他就一直在这家工厂上班..另外;在句型"It's+段时间+since+从句"中;since后面的从句要用一般过去时..例如:It's a long time since we met last.自从我们上次见面以来已经有好长时间了..3.在复合句中;如果主、从句表示的动作或状态都发生在过去;而且有先后;则在先的用过去完成时;在后的用一般过去时..例如:When he got there; the train had left.当他到那儿的时候;火车已经开了..He said he had visited the school before.他说他以前参观过那所学校..小试身手1. If he ___ harder ; he will catch up with us soon.04 北京A. study B. studies C. will study D. studied 2. I will go swimming with you if I ___ free tomorrow.04哈尔滨A. will be B. shall be C. am D. was3.If you ___ a chance to study in a foreign country ;just take it .04 苏州A. getting B. had got C. will get D. get4. Don’t leave until he ___ back.A. have comeB. comesC. will comeD. came5. “ Shall we have the volleyball match tomorrow ” “ Oh; it will be put off if it ____.04 黄冈A. snowsB. is snowingC. snowedD. will snow6.-Tell him about the news when he ____ ;John.-Yes; I will.04 宁波Aes B.will come C.would D.is coming7.Tomorrow we will go to the city park____ it is sunny.05 安徽A.as soon as B. when C. if D. as8.Please don’t leave until your teacher___back.05河南A. will come B .came C. comes D. is coming9 .I want to know if there ___a sports meeting next month . If they ___ it ; I must get ready for it..05青岛A. is;will holdB. will be; holdC. will be; will holdD. will have; hold10. -Mary; what about going boating if it___tomorrow.-Good idea.A. not rainB. will rainC. doesn’t rainD. won’t rain参考答案:1-5 BCDBA 6-10 ACCBC。

(2021年整理)主将从现_知识讲解

(2021年整理)主将从现_知识讲解

(完整版)主将从现_知识讲解编辑整理:尊敬的读者朋友们:这里是精品文档编辑中心,本文档内容是由我和我的同事精心编辑整理后发布的,发布之前我们对文中内容进行仔细校对,但是难免会有疏漏的地方,但是任然希望((完整版)主将从现_知识讲解)的内容能够给您的工作和学习带来便利。

同时也真诚的希望收到您的建议和反馈,这将是我们进步的源泉,前进的动力。

本文可编辑可修改,如果觉得对您有帮助请收藏以便随时查阅,最后祝您生活愉快业绩进步,以下为(完整版)主将从现_知识讲解的全部内容。

(完整版)主将从现_知识讲解编辑整理:张嬗雒老师尊敬的读者朋友们:这里是精品文档编辑中心,本文档内容是由我和我的同事精心编辑整理后发布到文库,发布之前我们对文中内容进行仔细校对,但是难免会有疏漏的地方,但是我们任然希望 (完整版)主将从现_知识讲解这篇文档能够给您的工作和学习带来便利。

同时我们也真诚的希望收到您的建议和反馈到下面的留言区,这将是我们进步的源泉,前进的动力。

本文可编辑可修改,如果觉得对您有帮助请下载收藏以便随时查阅,最后祝您生活愉快业绩进步,以下为 <(完整版)主将从现_知识讲解〉这篇文档的全部内容.主将从现知识讲解“主将从现”适用于什么样的从句中学员:王韧聪教师:李军力if引导条件状语从句的两种用法:“主将从现”和表事实时用现在时零碎用法" 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。

条件句表可能,主句多用将来时;条件句表事实,主句常用现在时.在 if 引导的条件状语从句中,如果从句谈论的是一个有可能发生的事实及其产生的相关的结果,主句用一般将来时态,从句用一般现在时态.如:We can walk there if we can’t find a bus 。

If it rains tomorrow , we will not go to the zoo.What will you do if you find a panda in danger.如果 if 条件句谈论的是重复发生和预示要发生的情景和事件,则主从句大多用一般现在时态.如:If bears are in danger ,they attack people.注意 :在 if 引导的条件状语从句中,if 条件句位置灵活,可直接放在主句后面,若 if 条件句放句首,从句后面要加逗号,和主句隔开。

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

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。

主过从过,主将从现,主现从任

主过从过,主将从现,主现从任

创作编号:GB8878185555334563BT9125XW创作者:凤呜大王*重温一道引起思绪混乱的题........After a wonderful meal, they told stories and sang songs by the campfire. 表示“在……之后”的句式:after+从句/doing/n.after I arrived => After my arrival 在我到达之后完成同义句转换:when the plane arrived =After his arrival, we have a party. ==时态使用重大的规则:(12字原则)主过从过,主将从现,主现从任【主将从现】常见的有以下三种情况:一、When/if引导的主句是一般将来时,从句用一般现在时。

I'll tell her the good news when she comes back.当她回来的时候,我将把这个好消息告诉她。

If it doesn't rain, he will come here on time.如果不下雨,他会按时来这儿的。

二、如果主句是祈使句,那么从句要用一般现在时。

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,从句多用一般现在时。

You should be quiet when you are in the reading room. 在阅览室时应保持安静。

【主过从过】常见的有以下二种情况:1.直接引语变成间接引语2.宾语从句中,当主句的谓语动词为过去时态时,从句须用表示过去的某种时态。

例如:He asked when they would go to the party.他问他们什么时候将去参加聚会。

Miss Green said she had been to Beijing before.格林小姐说她以前曾经去过北京。

主将从现常见的有以下六种情况

主将从现常见的有以下六种情况

常见的有以下六种情况:一、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如:When I grow up, I will be a nurse and look after patients/ I want to 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 soon as,when,while ,as,until等五、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.六、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等If引导的条件句(if翻译成"如果"的时候)Ⅰ.(if 从句) 主句v./ v.三单will+v.Ⅱ. if+sb+v./ v.三单can+v.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。

八年级英语语法主将从现知识点精讲及专项练习

八年级英语语法主将从现知识点精讲及专项练习

八年级英语语法主将从现知识点精讲及专项练习主将从现定义: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。

引导时间状语的引导词when , while , before , after , untill , till , since , as soon as主将从现一般出现的四种情况:一、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如:When I grow up, I will be a nurse and look after patients/ I want to 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。

when引导的时间状语从句例句展示:As soon as I reach Canada, I will ring you up. 我一到加拿大,就给你来电话。

I’ll call you as soon as I get home.我一到家就给你打电话。

I’ll wait here until/till the rain stops.我将在这里等着,直到雨停。

You can’t go home until/till you finish your work.直到你完成你的工作,你才能回家。

I will tell you after they leave. 等他们走后我再告诉你。

We must strike while the iron is hot. 我们必须趁热打铁。

if-when-主将从现

if-when-主将从现
如:If he goes to England,he will have to learn Englisn. If it is fine tomorrow, we will go outing
由if引导从句
这里if所引导的是真实条件句【即所假设的条件有可能成为现实, 表达所假设的条件实现时会出现的状况或者会采取的行为】
时间状语从句 条件状语从句
什么是从句?
• 在复合句,修饰主句的动词、 形容词或副词的从句叫做状 语从句。从句根据它表达的 意思可分为时间、原因、条 件、比较、结果等类型
时间状语从句和条件状语从句 中“主将从现”的搭配
• 主句:一般将来时 • 从句:一般现在时
条件状语从句
• 它引导的从句使用一般现在时表将来的意 思,这是主句和从句在意义上仍保持一致。
• If you go to the park tomorrow ,you’ll have a great time。
时间状语从句
• 用when 引导的从句用一般 现在时 • 主句用一般将来时
练习题
• Hurry up! Or we’ll be late.(改为 同义句)
if we’ll be late • we 用if将两句合并唯一句
don ’t
hurry up。
• You ‘re going to the park tomorrow. • You’ll have a great time.
• 另外,在if引导的从句中还可以使用 “would+动词原形”的结构,这种用法还 是表示“意愿”,常表示客气的请求 • 这时主句既可以用will/shall+动词原形,以 可以用“would(will)/should(shall) /could(can)/might(may)+动词原形”

if 引导的条件状语从句

if 引导的条件状语从句

一、if 引导的条件状语从句,主句用一般将来时,从句一般现在时。

即“主将从现”连词if的意思是“如果”,它引导的句子表示某事发生所需要的条件,即“在……条件下某事才能发生”,在句子中充当状语,因此我们称之为条件状语从句。

在复合句中连词if引导的句子为从句,被修饰的句子为主句。

从句可以放在主句后,也可以放在主句前,从句放在主句前时,应用逗号将它与主句隔开if_______If you study hard, you will get good grades.I _won’t_ play basketball this afternoon if it_ __rains___.I ___will_ play basketball this afternoon if it __doesn’t_ _rain.练一练1. If you _____ to the party, you’ll have a great time.A. will goB. wentC. goD. going2. – 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 rain3. I’ll give the book to him if he ___ here next Sunday.A. will comeB. comesC. is comingD. came4. There _________a basketball match in our school tomorrow afternoon, if it doesn’t rain.A. will be B will have C have D is用go与rain的正确形式We_______ to the Great Wall if it ____________ tomorrow.If it ______________ tomorrow, we___________to the Great Wall.二、as soon as的用法“一···就···”的意思主句用一般将来时,从句一般现在时。

初中英语时态知识点:常见的主将从现的四种情况

初中英语时态知识点:常见的主将从现的四种情况
Iwilltellhimaboutitwhenhecomes.
Ifitisfinetomorrow,wewillgoouting.
如果主句的时态是过去将来时,那幺从句要用一般过去时。例如:
Hesaidthathewouldhaveanothertryifhehadthechance.
Iknewhecouldhelpmeifhewasfreethenextday.
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
notto....
如;Shesaidnottoclosethewindow
常见的时间状语从句的连词有:assoonas,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,那幺从句要用一般现在时。例如:
主要标志有:if、unless、until、when、assoonas
我长大后要当一名护士,照顾病人。
二、如果主句是祈使句,那幺从句通常要用一般现在时
如:DontlaughatmewhenImakeamistake.
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:Youshouldbequietwhenyouareinthereadingroom
初中英语时态知识点: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,那幺从句常常用一般现在

主将从现

主将从现
定义
♦ 主将从现指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。
♦主要标志: 时间状语从句:when, while, after, before, as soon as, until, since 条件状语从句:if , unless, as long as
主祈从现
主句是祈使句,从句用一般现 在时。
Please let me know if he comes back. Don’t laugh at me when I make a mistake.
主情从现
主句中含有情态动词,从句用 一般现在时。
You should be quiet when you are in the reading room. If you feel hungry ,you should eat something.
3. The students will plant trees if it _D__ tomorrow. A. didn’t rain B. hasn’t rained C. won’t rain
D. doesn’t rain
4. –When will you tell him the good news? --I will tell him about it as soon as he _A_ back. A. comes B. came C. will come D. is coming
5. --- Can I go to Beijing for my holiday, Dad? --- You can when you ___B____ a bit older. A. will get B. get C. are getting D. got

宾从,现完,主将从现

宾从,现完,主将从现

上课时间:学生姓名:——————————————————————————————————————————————八年级重点语法汇总(一)一、主将从现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。

常见的有以下四种情况:(一)时间状语从句when:如果主句是一般将来时,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(二)如果句中if表“如果”,主句用一般将来时,从句用一般现在时If it is fine tomorrow, we will go outing.(三)常见的主将从现的连词还有:as soon as, when ,until, unless等1. He didn’t get home until 9pm.2. He won’t leave until the teacher comes back.注意:主要标志有:if unless until when as soon as(一)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.(二)如果主句是祈使句,那么从句通常要用一般现在时二、宾语从句专项训练1. 宾语从句的语序2. 宾语从句的时态3. 宾语从句的引导词一、单项选择1. Will you please tell me ?A. where Pudong Airport isB. how far Pudong Airport wasC. how can we get to Pudong AirportD. when was Pudong Airport built2. It’s not polite to ask people in England.A. how much money you have gotB. what the weather is likeC. what your city looks likeD. how old are you3. I wonder if he tonight. If he , I’ll let you know.A. will come; will comeB. comes; comesC. will come; comesD. comes; will come4. I can’t say I want to see him again. We haven’t seen each other for nearly three years.A. how longB. how soonC. how oftenD. how much5. Our geography teacher told us that Japan the east of China.A. is inB. was inC. is toD. was to6. Nobody knows he’ll come or not.A. thatB. ifC. /D. whether7. I want to know _________.A. who is she looking afterB. that she is lookingC. whom is she lookingD. whom she is looking after8. Catherine said that she ___ to Guangzhou.A. has never goneB. had never goneC. has never beenD. had never been9. Linda said the moon___ round the earth.A. travelledB. has travelledC. travelsD. had travelled10. He is not sure _______ to watch TV.A. ifB. whetherC. thatD. /11. Mike is thinking about _______ his parents will see him today.A. ifB. whetherC. thatD. /12. --Do you know ______ the teacher will come back tomorrow or not?-- Sorry, I don’t know. _______ he comes back, I will tell you at once.A. if, WhetherB. if, IfC. whether, WhetherD. whether, If13. When they got to the cinema, the film _______ for the ten minutes.A.had been on B.has begun C.began D.had begun14. The teacher says _______ she will leave a message on the headmaster's desk.A.if B.who C.that D.what15. -Do you think ________ a concert in our school hall this weekend? -Yes, there will.A. there will haveB. there will beC. will there beD. will there have三、现在完成时专练(一).现在完成时的构成:现在完成时由助动词have(has)+动词的过去分词构成。

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

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.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 comingYou 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. studyB. studiesC. will studyD. studied( )15. Frank _______ to see his grandma if he _______ free tomorr ow.A. will come; will beB. comes; isC. will come; isD. c omes; will be( ) 16. –When will you tell him the good news?--I will tell him about it as soon as he _______ back.A. comesB. cameC. will comeD. is comin ( )13. --- Can I go to Beijing for my holiday, Dad?--- You can when you _______ a bit older.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。

英语主将从现的用法

英语主将从现的用法

英语主将从现的用法主将从现是英语中一个非常常见的语法现象,它是指在时间状语从句和条件状语从句中,用现在时态代替将来时态的用法。

也就是说,I.如果从句的表意是一般将来时,就要用一般现在时代替;II.如果从句表意是将来进行时,就要用现在进行时代替;III.如果从句表意是将来完成时,就要用现在完成时代替。

本文通过主将从现在时间状语从句和条件状语从句中的用法,分别详解主将从现的实际运用。

一、条件状语从句中的主将从现(常见引导词有if、unless、as long as)例句1:You will regret it if you don't follow my words. 如果你不按我说的做,你会后悔的。

注释:主句中用的是一般将来时,从句本来也应该是用一般将来时。

但是,在条件状语从句中用一般现在时(if you don't follow)代替一般将来时(if you will not follow)。

例句2:I will call you, but you don't have to answer my phone unless you are not having a class. 我会给你打电话,但是除非你到时候不在上课,否则你就不用接电话。

注释:从整个句子的时间来看,从句本应该是将来进行时。

由于是在条件状语从句中,所以用现在进行时(unless you are not having)代替将来进行时(unless you will not be having)。

例句3:As long as we have completed the task by the end of next month, we will certainly be praised. 只要我们再下个月底前完成这个任务,我们肯定会被表扬。

注释:从条件状语从句的时间状语"by the end of next month"可以看出这里本来应该用将来完成时。

主过从过,主将从现,主现从任

主过从过,主将从现,主现从任

重温一道引起思绪混乱的题........After a wonderful meal, they told stories and sang songs by the campfire.表示“在……之后”的句式:after+从句/doing/n.after I arrived => After my arrival 在我到达之后完成同义句转换:when the plane arrived =After his arrival, we have a party. ==时态使用重大的规则:(12字原则)主过从过,主将从现,主现从任【主将从现】常见的有以下三种情况:一、When/if引导的主句是一般将来时,从句用一般现在时。

I'll tell her the good news when she comes back.当她回来的时候,我将把这个好消息告诉她。

If it doesn't rain, he will come here on time.如果不下雨,他会按时来这儿的。

二、如果主句是祈使句,那么从句要用一般现在时。

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,从句多用一般现在时。

You should be quiet when you are in the reading room. 在阅览室时应保持安静。

【主过从过】常见的有以下二种情况:1.直接引语变成间接引语2.宾语从句中,当主句的谓语动词为过去时态时,从句须用表示过去的某种时态。

例如:He asked when they would go to the party.他问他们什么时候将去参加聚会。

Miss Green said she had been to Beijing before.格林小姐说她以前曾经去过北京。

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• 另外,在if引导的从句中还可以使用 “would+动词原形”的结构,这种用法还 是表示“意愿”,常表示客气的请求 • 这时主句既可以用will/shall+动词原形,以 可以用“would(will)/should(shall) /could(can)/might(may)+动词原形”
• 如:if you would try Italian food,you would like it.
如:If he goes to England,he will have to learn Englisn. If it is fine tomorrow, we will go outing
由if引导从句
这里if所引导的是真实条件句【即所假设的条件有可能成为现实, 表达所假设的条件实现时会出现的状况或者会采取的行为】
有时,我们会用并列结构的祈使句 来表达这种类型的条件句
• If you don’t give him some food,he will starve . • Give him some food,or/elsa he will starve.
即所假设的条件有 可能成为现实
• 在if 引导的从句中“will +动词原形”并不 单纯的表示将来的意义,这里的“will”是一 个表示“意愿”的情态动词,相当于“be willing to【愿意】” • 当然这种“will+动词原形”的if从句在一些 场合是不能随便用的。
时间状语从句 条件状语从句
什么是从句?
• 在复合句,修饰祖宗的动词、 形容词或副词的从句叫做状 语从句。从句根据它表达的 意思可分为时间、原因、条 件、比较、结果等类型
时间状语从句和条件状语从句 中“主将从现”的搭配
•主句:一般将来时 •从句:一般现在时
条件状语从句
• 它引导的从句使用一般现在时表将来的意 思,这是主句和从句在意义上仍保持一致。
• If you go to the park tomorrow ,you’ll have a great time。
比如我们可以说成:if he gets my letter in time,he’ll be
able to change his plans
如果他能及时收到我的信,他就能改变他的计划。
却不能说成:if he will get my letter in
time,he’ll be able to change his plans.
时间状语从句
• 用when 引导的从句用一般 现在时 • 主句用一般将来时
练习题
• Hurry up! Or we’ll be late.(改为同 义句)
we’ll be late if
• 用if将两句Βιβλιοθήκη 并唯一句wedon’t
hurry up。
• You ‘re going to the park tomorrow. • You’ll have a great time.
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