2.I live in Beijing, where is the capital of China.

解析：此题为四星级题。此题考查定语从句中的非关系代词、副词的用法。where改为which。这是一个非限制性定语从句，从句中缺少主语，主语应由关系代词来充当，所以应将关系词where改为which。此句应改为：I live in Beijing, where there are lot of places of interest.先行词在定语从句为地点状语，所以应用关系副词where。如：

e.g.This is a house that / which I visited yesterday.

This is a house where I spent a happy childhood.

1.If the book you want is out, you may ask for it to be called back for you, and whether 　you pay the cost of sending a post card, the librarian will write to you.

解析：此题为五星级题。whether改为If。此题考查if与whether作为连词的区别。此处为if引导的条件状语从句，表示“如果……”；如用whether，则表示“是否”，语意不通。

在下列情况下一般只用whether：引导介词后的宾语从句、主语从句、表语从句、同位语从句或在whether to do, whether…or not…中。

e.g.Whether we’ll go camping tomorrow depends on the weather.

I asked him whether he would go or not.

5.(★★★★)She was smiling but nodding at me.　　　　　　　　 92. ________(NMET2000)

●案例探究

89. ________(NMET2001春季)

4.(★★★★★) felt that they helped me understand what the world works.

84. ________ (NMET2001)

3.(★★★★★)It looks as if my parents treat me as a visitor and a guest.

84. ________ (NMET2002)

2.(★★★★)The food was expensive and the service was good.

78. ________ (NMET2002)