1.quit的基本意思是“离开”,强调脱离或摆脱那些控制或纠缠着人们或给人造成负担的事物。可用作不及物动词或及物动词。用作及物动词时,接名词、代词作宾语。
2.quit还可作“停止”解,指活动的最后停止,有时指被动的停止。可用作不及物动词或及物动词,用作及物动词时,常接名词、代词或动名词作宾语。可用于被动结构。

quit of(v.+prep.)
使摆脱 rid oneself of (sth wanted)
▲quit sb/oneself of sb/sth
What he said quit me of fear.他的话使我摆脱了恐惧。
We soon quitted ourselves of fear.我们很快便消除了恐惧。
I'd like to quit myself of any blame in this affair.我想使自己在这件事中不受任何责备。
◇ 用于be ～ed结构
We are quit of our difficulties.我们摆脱了困境。
He got quit of his debts.他还清了债务。
I'm glad to be quit of that unsuitable job.我很高兴摆脱了这项不适合我的工作。
I'm glad to be quit of him.我很高兴摆脱了他。

用作不及物动词
▲S+～(+A)
He has quit, you know.他走了,你知道。
If he doesn't pay his rent, he'll receive notice to quit.假如不缴房租,他就会收到搬家的通知。
It's almost five o'clock; time to quit.快5点了,该下班了。
If I don't get a pay rise I'll quit.若不给我加薪,我就不干了。
He quit when he realized he could not win.他认识到他不能取胜就放弃了。
The engine has quit.引擎不转了。
用作及物动词
▲S+～+n./pron.
I quit him in disgust.我怀着憎恶之情离开他。
As soon as she quitted the room he returned to it.她刚离开房间他就回来了。
He was given two months' notice to quit his house.他接到两个月内迁出房子的通知。
He quit Barcelona for Paris.他离开巴塞罗那去了巴黎。
You'd better quit England and live in a warmer country.你最好离开英国到比较暖和的国家去住。
The guard did not quit his post all night long.卫兵整夜没离开岗位。
I have quit my job.我辞职了。
Quit work when the siren sounds.汽笛响时停止工作。
The men quit work at five.工人们5点下班。
I haven't quit the fight.我没有停止战斗。
Death quits all scores.一死了百债。
▲S+～+v-ing
It hasn't quit raining yet.雨还没停。
I've quit working.我已停止工作。
He quit studying to take a walk.他停止学习去散步。
He quit smoking and drinking early in his life.他早年戒了烟酒。

1.quit的过去式和过去分词是quit/quit,也可以是quitted/quitted,前者是美国用法,后者是英国用法。
2.在新闻体裁中, quit是leave的替代词。