中考英语三大从句复习

中考英语三大从句复习

一、专题讲解

考点一并列句和状语从句

一、并列句

1.表示顺城、并列、递进关系的连词及并列句

and;both...and..;as well as;not only..but also...

2.表示转折或对比关系的连词及并列句

but；while;yet e.g Lucy likes red while Lily likes white.

3.表示选择关系的连词及并列句

either..or..;or e.g.Study hard,or you’ll fail the exam.

4.表示因果关系的连词及并列句

so“所以”for “因为”

e.g Kate was ill so she didn’t go to school.

I have to stay up late,for I have lots of homework to do.

5.and和or用于否定句中的区别

（1）当列举成分是主语，又在否定词之前时，用and连接；当列举成分在否定词之后时，用or连接够成完全否定。

e.g Lucy and Lily can’t speak Chinese.

I can’t sing or dance.

（2）在否定句中，如果所连接的两部分都有否定词，那么用and连接，而不用or.

e.g. Their is no water and no air on the moon.

（3）在否定句中，without之后若有列举成分，则用and连接，构成完全否定；在肯定句中，without之后的列举成分要用or连接才能构成完全否定。

e.g Man can’t live without air and water.=Man will die without air or water.

二、状语从句

1.时间状语从句

（1）when的用法

●when‘当..时’,引导时间状语从句，表示主句的动作和从句的动作同时或先后

发生。

e.g I feel very happy when you come to see me.

●when引导的时间状语从句中的动词可以用延续性动词，也可以用终止性动词。

e.g I worked for a foreign company when I was in Chengdu.

（2）while的用法

while引导的时间状语从句意为“与.同时，在...期间”。while引导的从句常用延续性动词或表示状态的动词。

e.g They rushed in while we were discussing problems.

（3）as的用法

as引导时间状语从句时可以表达“正当，一边...一边...；随着”

e.g. Helen heard the story as she washed clothes.

We get wiser as we get older.

（4）before/after的用法

e.g I will always work hard before I enter Peking University.

（5）until/till的用法

till/until都表示“直到”，常可换用，但till不用于句首。not..until..“直到...才...”

e.g He didn’t go to bed until he had finished his work.

（6）since的用法

since引导的时间状语从句，表示“自...以来”，主句用一般现在时或现在完成时，从句用一般过去时。

e.g I have worked in this company since I graduated from Peking University.

（7）as soon as的用法

as soon as引导的从句表示从句的动作一发生，主句的动作随即发生，意为“一...就..”，该从句常用一般现在时表将来。

e.g As soon as he arrives,I’ll tell him.

2.条件状语从句

（1）if的用法

含有if引导的条件状语从句的复合句中，主句用一般将来时，从句用一般现在时。

e.g I’ll visit the Great Wall if it doesn’t rain.

（2）unless的用法

unless意为“除非，如果不”，相当于“if..not..”

e.g Unless it rains,the game will be played.除非下雨，否则比赛将正常举行。

（3）as long as的用法

As long as we show our love,the world will be full of happiness.

3.原因状语从句

●Because：表因果关系的语气较强，用来回答why的问句，所引出的原因往往是

听话人不知道或最感兴趣的，because引导的原因状语从句往往比主句显得更重要。

e.g I’m leaving because I am fed up with the boss.

●Since：引出的原因往往是人名已知的事实，因此经常译成“既然....”，通常放于

句首。Since引导的从句时次要的，重点是强调主句。

e.g Since everyone is here,let’s begin.

●As:as与since用法差不多，所引出的理由在说话人看来已经很明显，或已为听话

人所熟悉而不需要用because加以强调。As所引导的从句与主句具有同等的重要性。

e.g She didn’t hear us come in as she was asleep.

●Now (that)：主要用于口语，表示微弱的原因，主从句因果关系不明显，意为“既

然”

e.g Now (that) you have come,you may as well stay.

4.目的状语从句

（1）引导目的状语从句的词或词组有so that,in order that等，谓语中常含有

may,might,can,,could,will,would等情态动词。

e.g You must get up early so that you can go to work on time.

（2）当从句主语和主句主语一致时，可用so as to,in order to。

e.g He worked day and night in order tha t he could succeed.

=He worked day and night in order to succeed.