5. The man began to work when he was 20 years old.(改為同義句) 

The man began to work  20.

4. She could speak English.(對畫線部分提問) 

 could she speak?

3. She became famous two years ago.(對畫線部分提問)

she famous?

2. He started to learn to swim.(改為一般疑問句)

he to learn to swim?

根據(jù)要求完成句子

1. The man joined the army.(改為否定句) 

The man    the army.

7. 他打算去環(huán)游世界。

He plans to travel   .

6. 昨天他幵始學習彈鋼琴。

He   to play the piano yester?day.

5. 請用英語回答我的問題。

Please answer my question .

4. 山上有數(shù)百棵樹。

There are  on the hill.

3. 操場上有三百名學生₌

There are students on the playground.