英语语法名词性从句知识点：what与that引导名词性从句区别

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　　what与that引导名词性从句时有何区别? 请看题：

　　I think __________ he needs is more practice.

　　Yes. __________ he needs more practice is clear.

　　A. what, What B. that, That C. what, That D. that, What

　　此题应选 C。其余三项均可能被误选。what 和 that 都可以引导名词性从句，但有区别。如：

　　1. what 引导名词从句时，它在从句中要充当句子成分(主语、宾语等)，而 that 引导名词从句时，它在从句中不能充当句子成分。

　　2. what 引导名词从句时，它有词义(表示：什么;所的[东西]);而 that 引导名词从句时，它没有词义。

　　请做以下试题，注意区别 what 和 that。如：

　　1. ________ you said is different from the thing ________he told us.

　　A. What, what B. That, that

　　C. What, that D. That, what

　　2. I think ________ he said is true.(www.yygrammar.com)

　　But dont forget the fact ________he is a cheat.

　　A. what, what B. that, that

　　C. what, that D. that, what

　　3. ________ surprised us most is ________he spoke English so well.

　　A. What, what B. That, that

　　C. What, that D. That, what

　　答案：1. C 2. C 3. C