away 已经是一个介词了,后面一般不再跟介词,两个介词在一起的时候少
give away为动词加副词结构,做及物动词使用,后面跟的名词可跟在give或away后面,但名词如果为代词形式,就只能跟在give后面
give away
赠送捐赠丧失,失去,错失(优势)泄露(秘密)使露出真面目 扩展资料 
I was never tempted for a moment to give her away.
我从未想到过要揭她的底儿。
She would give nothing away
她会守口如瓶。
Although they are pretending hard to be young, grey hair and cellulite give them away
虽然他们费尽心思地扮年轻,但是花白的头发和赘肉却将他们的`真实年龄暴露无遗。
I'm telling this only to you. don't give me away.
这件事我只跟你说,你可别把我给卖了。
He didn't want to give his comrades away.
他不愿背弃他的同志们