逍遥学能 2015-03-26 10:23
【语法——状语从句】，学习英语的话英语可是很重要的哦，大家赶紧；来5068频道看看浅陌带给大家的语法总结吧。
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语势最强，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.
练习：
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?
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