If you have a toothache, you should go to see the dentist.

2.你最好躺下休息一下。

You had better lie down and rest.

3. 吃平衡的饮食是很重要的。

It is important to eat a balanced diet.

4.他怎么啦？

What's the matter with him?/What's wrong with him?

5．我认为他不会说英语．

I don't think he can speak English.

Unit Three

1. 假期你准备做什么？

What are you doing for vacation?

我要去香港拜访我的朋友。

2. I'm visiting my friends in Hong Kong.

3. 你要在香港待多久？

How long are you staying in Hong Kong?

我要待两个星期。

4. I am staying for two weeks.

5. 他早上忘了去吃早餐。

He forgot to have breakfast this morning.

他早上忘了吃过早餐。

He forgot having breakfast this morning.

Unit 4

1 你是怎么到达学校的？

How do you get to school ?

我是坐公共汽车上学的。

I go to school by bus./ I take the bus to school.

2 他是怎么去上班的？

How does he go to work?

他是坐小车上班的。

He goes to work by car./He takes a car to work.

3 汉语是和日语不同的。

Chinese is different from Japanese.

4 你觉得这本英语书怎样？

What do you think of the book?/How do you like the book?

Unit 5

1. 你能和我去音乐会吗？

Can you go to the concerts with me?