为什么句子末尾用to live in/to look at,而不用TO LIVE TOLOOK 呢说的详细一点,谢啦.

为什么句子末尾用to live in/to look at,而不用TO LIVE TOLOOK 呢说的详细一点,谢啦. Won't you drop the card in the mail today.为什么句子末尾是用句号而不是问号? The room is designed to live/ comfortable to live in.为什么一个用to live一个用to live in to live,to live in at home一个句子,there are some places to live.而there are some rooms to live in.为什么一个是用to live一个却用to live in呢?是前面的词places与rooms的缘故吗?另外,at home的home是副词是为什么呢?我 有一个句子It is a nice place to live为什么Live后不加ＩＮ they don't have places to live 还是 they don't have places to live in?为什么 they couldn't find a house to live in.为什么还要加in Claude didn't.in canada.A.lived B,use to live C.used to live.D.used to live请帮我选择正确答案,以及原因为什么? have rooms to live in.这里为什么用in,live什么时候做及物动词,什么时候做不及物动词 need的用法He needs a room to live in 为什么用live in不用live呀 英语里面什么时候是to live 什么时候是to live in?这两个句子这样用对吗?It's a good place to live.It's a good house to live in.第一个句子里面可以加in吗? This room is big enough for us to live in.This room is big enough for us to live （in）.句子后面为什么要加in? 想知道could you tell me where you live in?这个句子为什么不对是要把介词in去掉吗?如果是,什么情况下句子末尾有介词,什么情况下没有呢? I can't decide _______.A where to live in B where to live C what to do it Dhow to do 选哪个,为什么? These shoes are comfortable to wear.上面的句子和Our house is very pleasant to live in.为什么这个句子后面不能用live nice place to live为什么没有in. to live in和to live区别I don't think it's suitable for a large family to live in为什么是live in而不是live we will have nowhere to live 后面有in i don know where to live 还有in 为什么后面那个有介词，where 你也是副词吗