7. What is Jack going to do tomorrow?

6. Who is going bike riding this coming Sunday?

5. When is Tom going to see his uncle?

4. Are we going to plant trees the day after tomorrow?

3. Jim and Jill are not going to watch football on Sunday afternoon.

2. Are we going to have any classes next week?

8. return　 在用作不及物动词时, 表示 “回到”。相当于 come / go back。注意：return不与back连用。但是，后面可以接副词或者介词短语。例如:

He has returned.

他回来了。

He returned to Xi’an last year.

他去年回到西安。

He has just returned from work.

他刚才下班回来。

Are they going to return soon?

他们很快要回来吗？

My uncle will return to Hong Kong tomorrow. 我叔叔明天要回到香港。

Section B

7. how long和 how often 这两个词组都可用来询问时间，但含义不同。

1) How long指某个动作或状态延续的时间，与延续性动词连用，回答由how long提出的问题一般用“for+表时间的名词”, 如：for three years, for two weeks, for five days 等。

2) How often指的是动作发生的频率，也就是多长时间发生一次，通常与动词的一般现在时和一般过去时连用，回答由how often 提出的问题一般用表示次数的短语。如：once a year, twice a week, every three days等。试比较：

---How long did you stay there?

你在那里呆了多久？

---A month.

一个月。

---How often do you go the park?　

你多长时间去一次公园？

---Once a month.

每月一次。

3. leave…for… 的意思是“离开……前往……”动词和介词的宾语可以分别或同时不用。例如：

When did you leave Beijing?

你什么时间离开了北京？

The plane left Xi’an for Hong Hong.

那架飞机离开西安前往香港。

He left for New York yesterday.

他昨天去了纽约

2. sound可做半系动词，意思是“听上去是”, 后面接形容词或介词短语作表语。如：

The story sounds interesting.　

这个故事听上去很有趣。

Her voice sounds beautiful.　

她的嗓音很动听。

The idea sounds very cool.　

那个主意听上去真棒。