中考英语复习之语法讲解第十五讲—状语从句

2016-12-06 23:07:09 　来源：本站原创

　　第15讲：状语从句

 

　　状语从句是句子的状语由一个从句充当，来修饰主句中的动词，形容词或副词等。状语从句都由从属连词引导，与主句连接，放在句末时，一般不在前面加逗号。

 

　　状语从句根据它表示的意思可分为时间，原因，条件，比较，结果，目的等类。下面我们拣重点的一个一个来分析。

 

　　时间状语从句：是由when, as, while, after, before, since, until, as soon as 等从属连词引导的状语从句。时间状语从句中的谓语动词不能用一般将来时，只能用一般现在时表示将来发生的动作或存在的状态。 如:I will call you as soon as I arrive there.

 

　　原因状语从句： because, since, as和for都表示原因。常常令我们不知该用哪个好。我们来比较一下。because语势较强，回答why提出的问题，用来说明人所不知的原因。当能够很明显的看出原因或人们已知原因，就用as或since。如：I don't like that coat,because the color looks terrible. 由because引导的从句如果放在句末，且前面有逗号，则可以用for来代替。但如果不是说明直接原因，而是多种情况加以推断，就只能用for。如：He is not here, because / for his mother is ill.

 

　　目的状语从句：表示目的状语的从句可以由in order that, so that,等词引导。如：You must raise your voice so that/in order that everybody can hear you clearly.

 

　　结果状语从句：结果状语从句常由so...that 或 such...that引导，要掌握和区分这两个句型，首先要了解so和such后面分别跟什么词。such是形容词，修饰名词或名词词组，so是副词,只能修饰形容词或副词。so 还可与表示数量的形容词many, few, much, little连用，形成固定搭配。如：The box is so heavy that I can't carry it.

 

　　让步状语从句：是由though, although 引导的状语从句。though, although 和 but不能同时使用。

 

　　Although it rained, they had a good time.

 

　　训练：

 

　　1. She will find him a kind man when she _________him.

 

　　A. knows

 

　　B. know

 

　　C. will know

 

　　D. is going to know

 

　　2. We'll go out for a walk as soon as it ________.

 

　　A. stops raining

 

　　B. raining

 

　　C. stop to rain

 

　　D. rain

 

　　3. The film was _____ interesting _____ everyone wanted to see it again.

 

　　A. too, to

 

　　B. so, that

 

　　C. not ,until

 

　　D. very, that

 

　　4. We don't understand the passage ______ there is few words in it.

 

　　A. and

 

　　B. if

 

　　C. though

 

　　D. because

 

　　5. You are sure to pass the exam _______ you study hard.

 

　　A. if

 

　　B. though

 

　　C. that

 

　　D. when

 

　　6. If you _____ free tomorrow, we won't go for a picnic.

 

　　A. aren't

 

　　B. won't be

 

　　C. weren't

 

　　D. don't

 

　　7. What was Jim doing _______ the teacher came in?

 

　　A. while

 

　　B. and

 

　　C. when

 

　　D. but

 

　　8. You must stop ______ the policeman say: "stop!"

 

　　A. that

 

　　B. if

 

　　C. then

 

　　D. until

 

　　9. --The boy failed to pass the English examination.

 

　　--______ he didn't work hard.

 

　　A. If

 

　　B. Because

 

　　C. When

 

　　D. So

 

　　10. I'll go for a walk with you if it ______ tomorrow?

 

　　A. won't rain

 

　　B. doesn't rain

 

　　C. will rain

 

　　D. rain