1.bag用作动词基本意思是“装袋”“打死; 捕获”,也可指未经许可而拿走某物,但无偷盗之义。
2.bag也可指某物如布袋状宽松地下垂或悬吊着或使某物鼓胀起来。
3.bag可用作及物动词,也可用作不及物动词。用作及物动词时接名词或代词作宾语。

bag up(v.+adv.)
装袋 pit sth into a bag or bags
▲bag sth ⇔ up
Please bag up the wheat.请把小麦装进袋里。
She bagged up everything needed for the journey.她把旅行所需之物装入袋中。

用作不及物动词
▲S+～(+A)
His trousers bagged at the knees.他的裤子在膝部鼓了出来。
Her dress bagged shapelessly about her.衣服松松垮垮地挂在她的肩上,不成样子。
Since you've lost weight that suit bags on you.由于你体重减轻了,那套衣服显得太大。
用作及物动词
▲S+～+n./pron.
The police bagged the entire dope ring.警方捕获了整个贩毒集团。
She bagged nothing except a couple of birds.她仅猎获了两只鸟。
We bagged three enemy planes.我们击落3架敌机。
The wind bagged the curtain.风把帷幕吹得鼓了起来。
Loss of sleep bagged his eyes.失眠使他的眼皮浮肿。
Who has bagged my matches?谁把我的火柴拿去了?
She bagged the most comfortable chair.她擅自坐上最舒服的椅子。
You must manage to bag a couple of seats at the back for them.你要设法为他们抢占两个座位。
Two little boys were caught bagging apples.两个小男孩偷苹果时被抓住。

［同义词］ n. basket, handbag, carrier bag

1.bag的基本意思是“袋,包”,指由可折叠材料制成的、上方打开的或封闭的容器,可引申指一袋或一包的物品或量。
2.bag也可指“袋状物”或“猎获物”。
3.bag在口语里,还可表示“爱挑剔、令人厌烦或脾气坏较年长的女人”,常含有贬义。
4.bag前习惯加定冠词。

bag and baggage
全部财物 with all one's possessions
He packed up and left, bag and baggage.他卷走了全部的财物。


bag of bones
骨瘦如柴的人〔动物〕 very thin person or animal
The cat had not been fed for weeks and was just a bag of bones.那只猫已有几个星期没有喂食了,简直成了皮包骨。


bag of tricks
所有需要的东西 complete set of necessities
May I borrow your bag of tricks so that I can service my car at home?请把你所有的工具借给我好吗?这样我就可以在家里检修我的汽车了。


in the bag
确实无疑 successfully concluded, or as sure as if concluded
Judging by the enthusiastic reception given him everywhere, they felt that his election was in the bag.看到他处处受欢迎的样子,他们觉得他当选有如囊中取物。


pack one's bags
打点行装 leave
She tried to put up my rent yet again so I packed my bags and went somewhere else.她想再抬高我的房子租金,因此我打点行装,到其他地方去了。

All sorts of sleeping bags have been developed and many have been given extensive trials under various conditions.各式的睡袋被试制出来,并且有许多曾在不同条件下广泛试用。
He opened the bag and put the money in.他打开钱包,把钱放了进去。
Fred identified the bag as his by telling what it contained.弗莱德说出包里所装的东西来,证明那个包是他的。
Let me have a feel inside the travelling bag.让我摸一下这旅行袋的里面。
He emptied the bag of books onto the floor.他把包里的书倒在地板上。
There are two bags of cat feed on the table.桌子上有两袋猫食。

bag, sack
这两个词都有“包”“口袋”的意思。其区别在于:
1.sack指由结实材料制成的大袋子,而bag指由皮革或纸制成的包袋。
2.sack多用于储运谷物等笨重的大件物品,而bag则用来装小一些东西的物品,并能随身携带。例如:
Your bag is on the desk.你的提包在桌上。
There are many sacks of corn.有许多袋玉米。

这袋子只能装5斤。
［误］  The bag is holding 5 jin.
［正］  The bag holds 5 jin.
［析］  bag在这里是处所主语,不可用于进行体或被动结构。