4. 结果状语从句

　　(1)结果状语从句由so…that, such…that, so that引导。例如：

　　He is so poor that he can’t buy a bike for his son.

　　She is such a good teacher that everybody likes her.

　　My pencil fell under the desk, so that I couldn’t see it.

　　(2)so…that语such...that可以互换。例如：

　　在由so...that引导的结果状语从句中，so是副词，与形容词连用。其结构是: “...so + 形容词(副词)+ that + 从句”。例如：

　　He was so glad that he couldn’t say a word.

　　The hall is so big that it can hold 2,000 people.

　　Mother lives so far away that we hardly ever see her.

　　在由such…that引导的结果状语从句中，such是形容词，它修饰的可以是单数或复数可数名词，也可以是不可数名词;名词前面可以带形容词，也可不带。如果是单数可数名词，前面需加不定冠词a或an。例如：

　　It was such a hot day that nobody wanted to do anything.

　　He had such long arms that he could almost touch the ceiling.

　　He made such rapid progress that he did very well in the mid-term.

　　有时上述两种结构是可以互换的。例如：

　　It was such a wonderful film that all of us wanted to see it again.

　　=The film was so wonderful that all of us wanted to see it again.

　　It is such an important match that nobody wants to miss it.

　　=The match is so important that nobody wants to miss it.

　　(3)如果名词前由many, much, little, few等词修饰时，只能用so, 不用such。例如：

　　Soon there were so many deer that they ate up all the wild roses.

　　He has so little time that he can’t go to the cinema with you.

　　5. 比较状语从句

　　比较状语从句通常由as…as, 比较级 + than…等连词引导。例如：

　　Tom runs faster than John does.

　　This classroom is as big as that one.

　　6. 目的状语从句

　　(1)目的状语从句通常由 so that, in order that引导。例如：

　　We started early so that we could catch the first train.

　　He studies hard so that he could work better in the future.

　　We used the computer in order that we might save time.

　　(2)so that既可引导目的状语从句，又可引导结果状语从句。区别这两种从句的办法有两个：1)目的状语从句里往往带有情态动词can, could, may, might等。2)从意思上看，目的状语从句往往表示的目的很明确。例如：

　　Speak clearly so that they may understand you. (目的状语从句)

　　Jack is badly ill so that he has to rest. (结果状语从句)

　　7. 让步状语从句

　　(1)让步状语从句通常由although, though等连词引导。例如：

　　Though he is young, he knows a lot.

　　Although I am tired, I must go on working.

　　(2)although(though)不能用在同一个句子中。例如：

　　我们不能说：Though it was raining hard, but he still went out.

　　应该说：Though it was raining hard, he still went out.或It was raining hard, but he still went out.

　　8. 地点状语从句

　　地点状语从句常常由where来引导。例如：

　　Go where you like.

　　Where there is a will, there is a way.

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