动词+ it + when从句(例句均出自词典)
当某些及物动词由于语义的因素需要在其后接用when引导的状语从句时，习惯上要在状语从句前加一个it——这类及物动词主要有enjoy, hate, love, like, dislike, appreciate, prefer等。如：
I love it when you sing. 我喜欢听你唱歌。
I don’t like it when you shout at me. 我不喜欢你对我大喊大叫。
I don’t like it when you get angry. 我不喜欢你生气。
Men say they like it when women make the first move. 男人们说他们喜欢女采取主动。
I like it when a book is so good that you can’t put it down. 我喜欢有一本好书，它会让你爱不释手。
I dislike it when you whistle. 我不爱听你吹口哨。
We really appreciate it when she offered to help. 她来帮忙了，我们十分感激。
I hate it when you do that. 我讨厌你那样做。
I hate it when Jane cuts up in class. 我讨厌简课堂上插嘴。
I hate it when there’s no one in the office. 我讨厌办公室空无一人。
Pam hates it when Lee calls her at work. Pam讨厌Lee在上班时间给她打电话。
Balloons make me nervous—I hate it when they burst. 气球使我感到紧张，我讨厌它们突然爆炸。