5. A此题考查名词性从句. 由that 引导同位语从句, 充当idea的同位语.

5. [2010·长沙雅礼中学9次月考]A wonderful idea suddenly occurred to me　 _______ I would turn to the reference book to finish my homework

　 A. that　 　　　　　　　B. if　　　　　　　　 C. when　　　　　　 D. which

4．[2010·江苏南京市三模]Though having discussed it for long, they still haven’t reached an agreement　　　 they should pour more money into the project.

　　　　 A．that　 B．if　　　　 C．whether　　 D．what

4C考查同位语从句的连接词。句意：虽然已经讨论了好长时间，他们仍然没有就是否应该向这项工程投入大量资金达成协议。此处whether不作成分，起连接作用，意思：是否。

3. [2010·河南开封三模]_______is hard is to do good all one's life and never do anything bad.

A. He　　 B. It　　　 C. That　　 　D. What

3D考查主语从句的连接词。此处what在主语从句中作主语。句意：难的是一个人一辈子做好事并且从不做坏事。

2. [2010·河北石家庄市二模]The biggest surprise for John was　　　 he was chosen as team captain.

A. when　 B. what　 C. which　 D. whether

2A　 此题考查表语从句的连接词。句意为：John最惊喜的时刻是当他被选为队长的时候。根据句意选A，when在表语从句中作时间状语。

49．[2010·陕西宝鸡市质检三]The young man had made so much noise that he 　　　not have been allowed to attend the concert．

　　　　 A．should　 　　　　　　　　　 B．must　 　　　　　　　　　 C．could　 　　　　　　　　　 D．need

49A考查情态动词的用法。此处should not表示禁止。

48. [2010·安徽省高考调研卷]-- Director Wang, a man is waiting to see you outside, _______ he come in?

-- In a moment. I' m busy right now.

A. Can　　　　　 　　　 B. Shall　　　　　　　　 　　 C. May　　　　　 　　　　 D. Would

48B考查情态动词。shall用于第一、三人称的疑问句中，用于征求对方的意见，“要某人做……吗?”

47．[2010·全国大联考(新课标)]- Why didn’t you give a hand to the boy?

- I _______, but he struggled to his feet before I tried to．

　　　　 A．would like to have　　　 B．would like to　　　

　　　　 C．would rather to have　　　　 D．would better

47A考查would like to的用法。would like to have done表示“过去本打算做某事(未做)”。注意其后面的have不可以省略。

46. [2010·陕西西工大附中4次训练]To tell the truth, I would rather that I ____ the pain instead of you. You don’t know how worried I was.

　 A. took　 　　B. had taken　 　　C. have taken　 　D. should have taken

46B考查动词的虚拟语气。句意：说实话，我宁愿代替你的痛苦，你不知道我那时多担心。强调与过去的事实相反用过去完成时。故选B。