5. Did you / he / she / they go to Central Park? 你/他/她/他们去过中央公园吗？

Yes, I /he /she / they did. 是的，我/他/她/他们去过。

No, I /he /she /they didn't. 不，我/他/她/他们没有去过。

重点、难点解析：

4. Where did she go on vacation? 她假期上哪去了？

She visited her uncle. 她看望了她的叔叔。

3. Where did he go on vacation? 他假期上哪去了？

He stayed at home. 他呆在家里。

2. Where did they go on vacation? 他们假期上哪去了？

They went to New York City. 他们去纽约城了。

1. Where did you go on vacation? 你假期上哪儿去了？

I went to summer camp. 我去夏令营了。

21. a Beijing Hutong 一个北京胡同

重点句子：

20. Tian'an Men Square 天安门广场

19. the Palace Museum故宫

18. the Great Wall长城

17. decide to do sth. 决定做某事