when doing 的用法

When + doing"的用法

Every teacher should, therefore, follow in his footsteps and emphasize benevolence when teaching.

因此，每个老师教学时，应效法孔子并强调仁的道理。

= Every teacher should,therefore,follow in his footsteps and emphasize benevolence when he teaches .

在以when,while,if, once ,though,unless 等六个连词引导的状语从句中，若主语与主句的主语相同时，可将从句中的主语删除，并将之后的动词变成现在分词。若是be动词，一律变成分词being,而being再予以省略。

1. when you do the work, you should be careful.

= When doing the work, you should be careful.

2. If I am free, I'll do it.

= If free, I'll do it.

3. when you do the work, you must be careful.

= When doing the work, you must be careful.

4. Though he is poor, he is happy.

= Though poor, he is happy.

5. While I was watching Tv, I fell asleep.

= While watching TV. I fell asleep.

6. When you drive a car, you should be alert.

= When driving a car, you should be alert.