关于初中英语中的主从复合句中时态一致

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

参考答案：1-5 BCDBA 6-10 ACCBC

【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. was

3.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. get

4. Don’t leave until he ___ back.（）

A. have come

B. comes

C. will come

D. came

5. “ Shall we have the volleyball match tomorrow?” “ Oh, it will be put off if it ____.（04 黄冈）

A. snows

B. is snowing

C. snowed

D. will snow

6.－Tell him about the news when he ____ ,John.

－Yes, I will.（04 宁波）

https://www.sodocs.net/doc/6a14014581.html,es

B.will come

C.would

D.is coming

7.Tomorrow we will go to the city park____ it is sunny.

（05 安徽）A.as soon as B. when C. if D. as

8.Please don’t leave until your teacher ___back.（05河南）A. will come B .came C. comes D. is coming

9 .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 hold

B. will be, hold

C. will be, will hold

D. will have, hold

10. －Mary, what about going boating if it ___tomorrow.

－Good idea.

A. not rain

B. will rain

C. doesn’t rain

D. won’t rain

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eg: I was having dinner at a restaurant. eg: The two children are playing table tennis in the school. eg: Mr.Black gave us some advice on how to learn English well. eg: Paris is the capital of France. ①规则复数变化形式 可数名词在表示两个或两个以上的概念时需要用复数形式。可数名词单数形式变成复数形式的一般规则如下表:

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