动词catch，hold构成的短语动词
1．catch／take／get hold of sth．抓住某物
e.g. Catch／Get／Take hold of the rope,and I'll pull youup．
2．catch up with赶上
e.g. Work hard and I am sure you are able to catch up with others in class．
3．catch fire着火；烧着
e.g. Last night a big building caught fire．
4．catch sight of发现；看到
e.g. 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
e.g. He held up one of his fingers and showed it to the class．
e.g. In the rush hour the traffic is hold up．
6．hold back阻止；控制
e.g. We must hold them back from fighting．
8．hold out坚持；拿出
e.g. We must hold out until help comes．
