He earns a living driving a truck. 他靠开卡车谋取生。

▲doing sth. 作伴随状语：

Four people entered the room looking around in a curious way.

= Four people entered the room and looked around in a curious way.

The boy sat in front of the farmhouse, ____________(cut) the branch.

All night long he lay awake, ______________(think) of the problem.

The six blind men stood there ______________(beg) for a meal.

They stood there for half an hour _____________(watch) the stars in the sky.

Don't you sit there ____________( do) nothing. 别什么也不干坐在那里。

He came in, ______________(follow) by his wife. 他走了进来，后面跟着他的妻子。（☆过去分词短语也可以作伴随状语）

☆理解技巧：

理解"伴随状语"的关键是要理解"伴随"二字。分词(短语)用作伴随状语时，它表示的动作伴随句子谓语动作同时发生，即句子谓语所表示的动作为主要动作，分词短语所表示的动作伴随性的次要动作。

英语中V-ing形式作伴随状语时,它表示的是一个次要的动作,来对谓语表示的动作加以说明或作为陪衬。一般将其置于句后,可用逗号与主句成分分开。

例如: Don't sit there doing nothing. Come and help me with this table.

不要坐在那里什么也不做;过来帮我收拾餐桌

II．关于on doing 作状语常见问题：

on prep.一......就......，后接v.-ing或表示动作的名词。

On seeing her，the king immediately falls in love with her. 一看见她，国王就爱上了她。

①On hearing the news，she burst into tears. 一听到这个消息，她就大声地哭了起来。

②On his return，he began to get down to his work. 他一回来，就开始工作了起来。

③On/upon his arrival at the airport，he was arrested by the police.他一到机场就被警察抓住了。

1. As soon as she saw it, the woman said she did not like it. =>Seeing it, the woman said she did not like it.

2. As soon as he opens the gate from the outside, he comes into the garden and waits until the gate shuts. =>On opening the gate from the outside, he comes into the garden and waits until the gate shuts.

3. The moment you leave this tent, you will get surprise. =>On leaving this tent, you will get surprise.

4. The vicar has been asked to have the tree cut down. He has refused so far. =>Having been asked to have the tree cut down, the vicar has refused so far.

5. The tree was planted near the Church 50 years ago. It has gained an evil reputation only recent years. =>Planted near the Church 50 years ago, it has gained an evil reputation only recent years