give in的主要意思是 让步；give up意思是放弃；give away 的意思 ：赠送，捐献 ；give off 意思是释放，发出
give up
递上去，传上去
hand up,pass up
· He gave the books up to her.
他把书往上递给她。
放弃，认输
stop trying to do something or answer a question
· He has given up smoking.
他戒烟了。
· He gave up teaching only two years ago.
两年前他才离开教学工作的。
· He has given up his job.
他辞去了工作。
give in
屈服，让步
stop trying to do something because one are not strong enough, etc.
· Tom always gave in to his big brother.
汤姆总是屈从于他的大哥。
· Are you willing to give in?
你愿意让步吗？
· He would rather die than give in.
他宁死不屈。
交；递交，
give work, etc.to someone
· "Please give in your essays now", said the teacher.
老师说：“现在请你们把作文交上来。”
· Give in your examination papers now.
现在把考卷交上来。
give away
赠送，捐献
make a present of, donate
· He gave away a part of his income to his needy friends.
他把收入的一部分送给经济困难的朋友们。
· They're giving away free glasses at the supermarket.
超级市场那里在免费赠送玻璃杯。
· He has given away all his money.
他把钱都送给别人了。
· The old teacher gave away all his books to the school.
这位老教师把他的全部藏书捐送给了学校。
分发（奖品等）
distribute(prizes,etc.)
· give away medals at a sports meeting
在运动会上分发奖章
· The headmaster gave away the prizes.
校长分发奖品。
give off
发出，放出
emit, send out
· The gas gave off an unpleasant smell.
这种气体散发出一种不好闻的味道。
· The apples give off a very sweet smell.
这些苹果散发出非常香甜的味儿。
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