同学你好，该知识点来自沪江网校《高中水平直达托业目标800分丨新题型随到随学优选班》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好
这句话的意思是： 主人通常为客人买单。

pick over
仔细检查…以便选出佳品；挑拣  
Pick over the fruit and pile on top of the cream.
拣出好的水果，码放在奶油上。

pick on
1.找…的岔子；故意刁难
Bullies pick on younger children...
坏孩子专挑年纪更小的孩子欺负。
2. 挑中；选中
When you have made up your mind, pick on a day when you will not be under much stress...
你什么时候下决心了，就挑一个压力不大的日子

pick off
逐个瞄准射中
Both groups on either side are just picking off innocent bystanders...
对峙双方都只是在瞄准射击无辜的旁观者。

pick up
1. 拿起；提起；拾起；捡起
He picked his cap up from the floor and stuck it back on his head...
他从地板上拾起帽子，重新戴在头上。
2.（跌倒或被击倒后）使（自己）慢慢站起（或爬起）
Anthony picked himself up and set off along the track.
安东尼自己慢慢爬起来，又开始沿着跑道跑下去。
3. （通常指开车）接载，取走
We drove to the airport the next morning to pick up Susan...
我们第二天早晨开车去机场接苏姗。
4. 逮捕；拘捕
Rawlings had been picked up by police at his office...
罗林斯已在办公室遭警察拘捕。
5.（不费力地）获得，学会
Where did you pick up your English?...
你在哪儿学的英语？
6.（以发生性关系为目的）搭识，与…搭讪
He had picked her up at a nightclub on Kallari Street, where she worked as a singer.
他是在卡拉里街的一家夜总会和她搭上的，她在那儿当歌手。
7. 得（病）；染上（疾病）
They've picked up a really nasty infection from something they've eaten.
他们因吃错东西而得了很严重的感染症。
8. 接收到（信号或声音）
We can pick up Italian television...
我们能收看到意大利电视台的节目。
9. 发现，找到，识别（特点或模式）
Consumers in Europe are slow to pick up trends in the use of information technology.
欧洲消费者在辨别信息技术应用的潮流上表现迟缓。
10. 重提，接过（观点或话题）
Can I just pick up that gentleman's point?...
我能接着那位先生的意思往下说吗？
11.（贸易或经济）好转，改善
Chinese officials hope that trade will pick up when the two countries switch to hard currency...
中方官员希望两国在转向使用硬通货后，贸易会有起色。
12.（健康）好转，恢复
A good dose of tonic will help you to pick up.
一剂好的补品将有助于身体康复。
13.指出…的错误；纠正
...if I may pick you up on that point...
请允许我指出你在那一点上的错误