1.
He
patted
me
gently
on
the
back.
他轻轻地在我背上拍了一下。
2.
He
misbehaved
himself
on
something.
在某些事上他行为不端。
3.He
found
someone
on
him.
他发现有人在跟踪他。

Tom is sitting on the desk.
He is smiling
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压制；〔口语〕//www.souquanme.com责备；审理(案件等)；调查；网络拖延；坐在??上；为?的成员；na.压制；〔口语〕责备；审理(案件等)；调查网络拖延；坐在??上；为?的成员，变形第三人称单数：sits on；现在分词：sitting on；过去式：sat on；sit on美 英 na.压制；〔口语〕责备；审理(案件等)；调查网络拖延；坐在??上；为?的成员第三人称单数：sits on 现在分词：sitting on 过去式：sat on 英汉英英网络释义na.1.〈俚〉拖延，压制；〔口语〕责备2.审理(案件等)；调查例句释义：全部，压制，〔口语〕责备，审理，调查，拖延，坐在??上，为?的成员更多例句筛选1.This was as good a place as any， for all the young couples would stop when they reached this point， to sit on the benches round the pon搜趣网d.正是一个好去处，游公园的青年男女到此都要在长椅子上坐一下的。tr.bab.la2.People sit on the by the lake， enjoying such beautif//www.souquanme.comul view， loathe to give up to go home， really want to see much in a short while.人们坐在湖边，欣赏着如此美景，舍不得回家，真想多看一会儿。blog.163.com3.The preparations meanwhile went on， and Lady Bertram continued to sit on her sofa without anyinconvenience from them.舞会的准备工作正在进行，伯特伦夫人依然坐在沙发上，全都不用她操心。novel.tingroom.com4.Set up a jar and have the kids sit on their knees on the chair and toss coins over the back of the chair trying to get them in the jar.放一个罐子，让孩子们跪在椅子上，试着从椅背上将硬币抛进罐子里。

1 sit in 一般是指 sit on a chair , a bench ,a branch , a bicyle , the ground . 表示坐在某某搜趣网上。
2 sit at a table , a desk 表示坐在桌前，书桌旁。
3 sit in, a car , a garden 表示坐在某某里，另外sit in 还有两个搜趣网意思，1 表示旁听，代表别人主持会议。2 参加示威等。 希望我的回答对您有帮助，，望采纳。