what與that引導名詞性從句時有何區別　　

what與that引導名詞性從句時有何區別? 請看題：　　

—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　　

此題應選 C。其余三項均可能被誤選。what 和 that 都可以引導名詞性從句，但有區別。如：　　

1. what 引導名詞從句時，它在從句中要充當句子成分(主語、賓語等)，而 that 引導名詞從句時，它在從句中不能充當句子成分。　　

2. what 引導名詞從句時，它有詞義(表示：什么；所……的[東西])；而 that 引導名詞從句時，它沒有詞義。　　

請做以下試題，注意區別 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.hz123456.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