21.How many+可数名词复数+一般疑问句？ ......有多少......?

22.主语+find+that从句. ......发现......

23.It's+ adj.+ to do sth. 做某事的......的。

24.ask sb. about sth.向某人询问某事 ask sb. to do sth.要求某人做某事

25.by doing sth. 通过做某事 the best way to do sth.做某事的最好方式

25. What's your favorite...?你最喜爱的...是什么？

=Which...do you like best? 你最喜欢...?

二．词语辨析：

1. how often 多久一次，用来提问动作发生的频率。回答用：once，twice, three times 等词语。

Eg:How often do you play sports? Three times a week.

2. how long 多长，用来询问多长时间，也可询问某物有多长。

Eg:How long does it take to get to Shanghai from here?

How long is the ruler?

3. how far 多远， 用来询问距离，指路程的远近。

Eg : How far is it from here to the park? ---It's about 2 kilometers.

4. (1)free 空闲的，有空的， 反义词为 busy.

　　 be free= have time. 有空，闲着

eg:I'll be free next week. = I'll have time next week.

(2)free还可作"免费的、自由的"解。

　be free to do sth. 自由地做某事。

:egThe tickets are free. You're free to go or to stay.