I insist on taking proper food fort his expedition．

She devoted herself to teaching.

归纳3：动名词作介词宾语

动名词可与介词一起构成介词短语。

A．介词+动名词

B．动词+介词+动名词

※下列短语中的to都是介词，所以后面跟名词或-ing形式：devote to，object to，pay attention to，get down to，lead to, look forward to，stick to，be used to, refer to, make a contribution to,等

Exercises

Fill in the blanks with the proper form of the given verbs.

1.--- What do you think made Mary upset?

--- Losing (lose) her new bicycle, I think.

2. When the teacher suggested taking (take) a swim, the entire class cheered in approval.

3. I tried to avoid meeting (meet) him because he always bored me.

4. I mean to change(change) the plan even if it means taking (take) an extra month.

5. While shopping, people sometimes can't help being persuaded (persuade) into buying (buy) things they don't really need.

6. Tom was unhappy at not being invited / not having been invited (not invite) to the party.

7. It's no use arguing (argue) with him.

It's not necessary to argue (argue) with him.

8. We don't allow smoking (smoke) here.

We don't allow students to smoke (smoke).

9. It's not my fault. I remembered locking / having locked (lock) the door already.

It's my fault. I should have remembered to lock (lock) the door.

10. They prefer staying (stay) at home to going out.

They prefer to stay (stay) at home.

They'd prefer you (to) stay (stay) at home.