1．catch／take／get hold of sth． 抓住某物

Catch／Get／Take hold of the rope, and I'll pull you up．

2．catch up with 赶上

Work hard and I am sure you are able to catch up with others in class．

3．catch fire 着火；烧着

Last night a big building caught fire．

4．catch sight of 发现；看到

When the mice caught sight of the cat, the mice run away as quickly as possible．

5．hold up 举起；阻滞（交通等）；耽搁

He held up one of his fingers and showed it to the class．

In the rush hour the traffic is hold up.

6．hold back 阻止；控制

We must hold them back from fighting．

7．hold one’s breath 憋住气，屏息

How long can you hold your breath under water?

8．hold out 坚持；拿出

We must hold out until help comes．