catch at

1. 试图抓住

The boy caught at the ball but missed it.

男孩想去接球, 但却没有接住。

2. 拼命抓; 渴望得到

A drowning man will catch at a straw.

溺水的人连稻草也要死命抓住。

catch it

1. 受责挨骂

You'd better hurry home. You'll catch it from father if you're late.

你快回家吧。回去晚的话, 会挨爸爸骂的。

catch on

1. 抓牢

The girl kept catching on to her mother's skirt.

小女孩一直紧紧地拉着妈妈的裙子。

2. 理解

I don't quite catch on to what she is saying.

我不太明白她在说些什么。

3. 流行

It is a nice song and I think it will catch on quickly.

这首歌很好, 我想它会很快流行起来。

catch sb. red-handed

1. 当场抓住

The robbers were all caught red-handed by the police.

所有盗贼都被警察当场抓住。

catch up

1. 很快拾起

The thief caught up the money and ran away.

小偷一把抓起钱, 逃之夭夭。

2. 赶上

They started a few minutes ago, and we must hurry to catch up.

他们几分钟前已出发, 我们必须赶紧追上。

3. 缠住

It seemed that she was always caught up in the household.

看来她总是家务缠身。

catch up on

1. 得到……消息

I'm afraid I can't catch up on how things are in that area.

我恐怕不能及时得到关于那个地区的消息。

2. 赶完; 弥补

I had to comfort my girlfriend until late last night, so I've got to catch up on my homework.

昨晚我安慰女友到很晚才回家, 因此今天我必须把功课补上。

You'll have to catch up on your studies in the holidays.

你要在假期里补功课。

catch up to

1. 赶上

Jane ran hard and tried to catch up to her friends.

简拼命奔跑, 试图赶上她的朋友们。

catch up with

1. 赶上

Let's hurry and catch up with the group ahead.

我们快点, 赶上前面的那一伙人。

2. 对……产生预期的坏影响(或恶果)

Smoking will catch up with you sooner or later.

吸烟迟早会使你受害不浅。