2015年职称英语考试已经开始备考，本阶段应该多整理一些基础词汇和语法。为此，网校特整理了“2015年职称英语考试语法知识”供您参考，希望对您有帮助！

不定式主语

1）It's easy(for me)to do that.我做这事太容易了

easy,difficult,hard,important, possible, impossible,comfortable,necessary,better；

the first,the next,the last,the best,too much,too little,not enough

It's so nice to hear your voice.

听到你的声音真高兴。

It's necessary for you to lock the car when you do not use it.

当你不用车的时候，锁车是有必要的。

2）It's very kind of you to help us.他帮助我们，他真好。

Kind,nice, stupid,rude, clever,foolish,thoughtful,thoughtless,brave,considerate,silly, selfish

例句：

It was silly of us to believe him.我们真愚蠢，竟然相信了他。

It seemed selfish of him not to give them anything.他不给他们任何东西，这显得太自私了。