④它真的很好，所以我爱不释手。________ _______________

⑤你应该快点。读书报告两周后必须交。

【课中探究】

1.重点词语:

yet / already

　　already 通常用于肯定句中，意为"已经"，位于行为动词之前，be动词、助动词之后。 例如：

　　We have already cleaned the classroom. 我们已经打扫了教室。

　　yet用于疑问句中表示"已经"；用于否定句中表示"还（没）"。 例如：

-Has he found his watch yet? -No, not yet.

　 单项选择：

- Have you done most of your jobs?

- Not _________. I will do them in a minute.

A. neither B. never C. already D. yet

2.语法聚焦：

Steve, have you decided yet which book to write about for English class? 斯蒂夫，你已经决定英语课写哪本书了吗？

　　which book to write about 意为"写哪一本书"，此处为"疑问词+动词不定式"结构，在句中作宾语。

　　I can't decide when to start. 我不能决定何时动身。

　　I am thinking about how to deal with the problem. 我正在考虑怎样处理这个问题。

[拓展] 常用于此结构的疑问词还包括疑问代词who, whom, what 及疑问副词when, where 和 how。

He taught me how to pronounce it. 他教我如何发音。

I didn't decide where to live. 我没有决定住哪儿。

（2012· 呼和浩特）-Which dress do you like best, Madam?

-Sorry, I can't decide __________ now.

A. to buy which one B. buy which one

C. which one to buy D. which I should buy it