That's why_he_got_angry with me.

　　③问题是谁能代替他。

　　The question is who_can_take_the_place_of_him.

　　④那不是他想要的。

　　That's not what_he_wants.

　　(4)同位语从句

　　I have no idea what he thinks of the plan.

　　我不知道他怎么看待这个计划。

　　We don't understand the problem why this is the best choice.

　　我们不明白这个问题--为什么这是最好的选择。

　　[即时演练4]

　　单句语法填空/句型转换

　　①(重庆高考)-Is it true that Mike refused an offer from Yale University yesterday?

　　-Yeah, but I have no idea why he did it; that's one of his favorite universities.

　　②The teacher didn't know the reason why Jack was absent.

　　→The teacher had no idea why Jack was absent.

　　③We haven't decided where we are going to spend our holiday.

　　→We haven't settled the problem where we are going to spend our holiday.

　　2．连接代词和连接副词的选择

　　连接代词和连接副词的选择要把握住两点：

　　(1)成分：连接代词在从句中作主语、宾语、表语或定语；连接副词在从句中作状语。

　　(2)意义：无论是连接代词还是连接副词，都有各自的意义。

　　That's where the accident took place.

　　那就是事故发生的地方。(作状语，意为"......的地方")

　　She didn't know who/whom we were talking about.

　　她不知道我们在谈论谁。(作介词宾语，意为"谁")

　　[即时演练5]

　　(1)选词填空：when, why, how, which, what, who, whom　

　　①Do you know when the train arrives?

　　②Can you tell me why you chose the topic to write an article?

　　③How I can make greater progress later is a problem.

　　④Which team will win is not clear.

　　⑤What I want to know is who took away my book.

　　⑥The problem is whom we should have do it.

　　(2)单句语法填空

　　(全国卷Ⅰ)We haven't discussed yet where we are going to place our new furniture.

　　3．what与that的用法区别

　　(1)that只起连接作用，在从句中不充当任何成分，也无任何意义。

　　(2)what引导从句，除起连接作用外，还在从句中作主语、宾语、表语等成分，这时what具有两个含义：①保留疑问的意义，即"什么；什么样的"；②相当于"the thing(s) that/which"，即"先行词＋定语从句"的含义。

　　另外，what的此种用法还可以表示时间(the time that)、地点(the place that)、人物(the person that)、数目(the amount/number that)等不同概念。

　　Our income is now double what it was ten years ago.

　　我们现在的收入是10年前的两倍。

　　The trouble is that she has lost his address.

　　麻烦在于她弄丢了他的地址。

　　After what seemed a long wait, the results were announced.

　　经过了似乎漫长的等待之后，结果被宣布了。