2. 名词性wh-从句，即以wh-词连接的名词性从句。Wh-词包括：

　 连接代词：who, whom, whose, what, which, whoever, whatever, whichever

　 连接副词：when, where, how, why

连接词whether, if不充当句子的任何成分。

引导名词性从句的连接词可分为两类：

1. 名词性that从句，即以that为连接词的名词性从句。that只能起连接主句和从句的作用，不充当从句的任何成分，无词义。

50. He’ll never succeed , 　　　　　hard he tires.

　 A. whatever　　 　　　　　　　 B. despite　　 　　　　　　　 C. though　 　　　　　　　　 D. however

49.Beneath our feet _____ that our life depends on for food and clothing.

　 A. the earth lay　　 　 B. the earth lies　　　 C. lies the earth　 　　　　 D. does the earth lie

48. It was ten years ____ he returned to his hometown and set out to revenge his dead father.

　A. since　 　　　　　　　 B. that　 　　　　　　 C. before　　 　　　　　　　 D. when

47. I really don’t know _____ it was that answered the phone this morning.

　 A. why　 　　　　　　　　 B. who　 　　　　　　 C. how 　　　　　　　　　　　 D. whether

46. Was it during the Second World War _____ his family all died?

　 A. that　 　　　　　　　　 B. then　 　　　　　　 C. when　 　　　　　　　　　 D. in which

45. Only in this way　 　　　　　expect to get over so many difficulties .

A. we are sure to　　 B. can we　　 　　　 C. that we can　 　　　　　 D. that can we

44. His parents are always strict with him . Only after　 　　　　　his homework　 　　　　

to go out and play with his friends.

A. he has finished , was he allows

B.　　　 he has finished , he is allowed　

C.　　　 he had finished , was he allowed

D.　　 he finished , is he allowed

43. Very important in the farmers’ life　 　　　　　.

A. the radio weather report is　　　　　 B. the radio weather report has been

C. is the radio weather report 　　　　 D. have been the radio weather report