小升初英语语法名词性从句知识：what与that

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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 don’t 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