4. 某些及物动词(如 like, love, enjoy, prefer, hate, appreciate等)之后若没有出现宾语,而直接跟 if/when 引导的状语从句,要在从句前使用代词 it。如:
I like [love] it when you sing. 我喜欢听你唱歌。
I dislike it when you whistle. 我不爱听你吹口哨。
I hate it when Jane cuts up in class. 我讨厌简课堂上插嘴。
I’d appreciate it if you could drop in tonight. 你今晚来一趟我会很感激。
I should prefer it if you did not go there alone. 我倒希望你不要一个人去那里。