2022年福建專升本考試時間已經延遲，對于正在備考的考生來說，下面庫課李老師給考生整理了福建專升本英語之《狀語從句》知識點，正在備考中的考生可認真查看，小編在此預?？忌苋〉脙?yōu)異成績。
狀語從句
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狀語從句
用來修飾主句中的動詞，副詞和形容詞的從句叫狀語從句。
根據其含義狀語從句可分為時間狀語從句，地點狀語從句，條件狀語從句， 原因狀語從句，結果狀語從句，比較狀語從句，目的狀語從句，讓步狀語從句。
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狀語從句常用連詞
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狀語從句的分類
1. 時間狀語從句
(1)時間狀語從句常用when, as, while, before, after, since, till, until, as soon as等連詞來引導。
例：It was raining hard when got to school yesterday.
(2)在時間狀語從句里，通常不用將來時態(tài)，用現在時態(tài)表示將來的動作或狀態(tài)。
例：I'll ring you up as soon as I get to New York.
3)在帶有till或until引導的時間狀語從句的主從復合句里，如果主句用肯定式，其含義是“一直到……時”，謂語動詞只能用延續(xù)性動詞。如果主句用否定式，其含義是“直到……才……”, “在……以前不……”, 謂語動詞可用瞬間動詞。
例：The young man read till the light went out.
2. 條件狀語從句
(1)條件狀語從句通常由if, unless引導。
例：What shall we do if it snows tomorrow?
(2)在條件狀語從句里，謂語動詞通常用現在時態(tài)表示將來的動作或狀態(tài)。
例：I'll help you with your English if I am free tomorrow.
(3)“祈使句 + and (or)+ 陳述句” 在意思上相當于一個帶有條件狀語從句的復合句。
例：Hurry up, or you'll be late.
=If you don't hurry up, you'll be late.
3. 原因狀語從句
(1)原因狀語從句通常由because, since, as引導。
例：He didn't come to school because he was ill.
(2)because表示直接原因，語氣最強。Because引導的原因狀語從句多放在主句之后。回答由why提出的問題，只能用because。
As和since語氣較弱，一般用來表示明顯的原因。由as和since引導的原因狀語從居多放在句首。
例：------Why aren't going there?
------Because I don't want to.
As he has no car, he can't get there easily.
Since we have no money, we can't buy it.
(3)because和so不能同用在一個句子里。
4. 結果狀語從句
(1)結果狀語從句由so…that, such…that, so that引導。例：He is so poor that he can't buy a bike for his son.
(2)so…that語such...that可以互換。例如：
在由so...that引導的結果狀語從句中，so是副詞，與形容詞連用。其結構是: “...so + 形容詞(副詞)+ that + 從句”。
例：He was so glad that he couldn't say a word.
(3)如果名詞前由many, much, little, few等詞修飾時，只能用so, 不用such。
例：Soon there were so many deer that they ate up all the wild roses.
5. 比較狀語從句
比較狀語從句通常由as… as, 比較級 + than…等連詞引導。
例：Tom runs faster than John does.
6. 目的狀語從句
目的狀語從句通常由 so that, in order that引導。
例：We started early so that we could catch the first train.
7. 讓步狀語從句
(1)讓步狀語從句通常由although, though等連詞引導。
例：Though he is young, he knows a lot.
(2)although(though)和but不能用在同一個句子中。
例：我們不能說：Though it was raining hard, but he still went out.
應該說：Though it was raining hard, he still went out.或It was raining hard, but he still went out.
8. 地點狀語從句
地點狀語從句常常由where來引導。
例：Go where you like.