it特殊用法种种
请先看下面的句子。
1．If your father sees you doing that，you'll catch it．
如果你爸爸看见你干那事，你可就倒霉啦（会受到责备）！
2．I want to see him and have it out with him．
我想去找他把事情讲清楚。
以上两句中的it，并不指任何具体的事物，完全是一种习惯用法，用来构成习语。
这种构成方式有以下几种情况：
一、在及物动词后，形式上是该动词的宾语，但并不指具体事物，也无任何特别意义。例如：
1．Now you have done it．
现在你可糟了。
2．He has done something wrong after all，but he still brazened it out and pre-tended that he didn't care either．
他毕竟做了错事，但他仍然硬着头皮装出一副满不在乎的样子。
3．It seems to me that he can't bluff it out any longer because the authoritieshave started to look into the matter
我看他再也蒙混不下去了，因为当局已着手调查此事。
4．The long journey seems to have taken it out of him．
长途跋涉看来已使他筋疲力尽。
5．We can't make it to the destination in such an awful weather．
天气这样糟糕，我们可到不了目的地啦。
6．You should face it out no matter what happens．
不管发生什么事，你都应该坚持到底。
7．Try to stick it out．You are sure to bridge over the difficulties．
先忍着点，你肯定会渡过难关的。
二、在介词后，形式上是该介词的宾语，但无特指。例如：
1．When the cat saw the dog coming，they ran for it．
猫看见狗走过来就跑开了。
2．You'll have to jump to it if you want to catch the train．
你要想赶上火车就得快点。
3．I will keep at it．
我将坚持下去。
三、用在不及物动词后，处于状语的位置。例如：
Don't go it alone．
不要一个人干。
四、用在一些由名词或形容词变成的动词后，这样的动词往往使描述更为生动形象。例如：
1．We can do nothing but chance it．
我们只有碰碰运气了。
2．He has made up his mind to brave it out in defiance of blame and suspicion．
置责难与猜疑于不顾，他决心干到底。
