Reading aloud is a good way to learn a language
Playing with fire is dangerous
It's no good/use regretting for the past
It's a waste of time arguing with him about the matter
1.2位于句首
3.4 it作形容主语，而将V-ing形式移到后面
It's a waste of time doing...做...是浪费时间的
It's no good/use doing...做...是没用的
It's worthwhile doing... 做...是值得的
It's useleaa doing...做...没有用
It's no fun doing...做...没有乐趣
避免错过少延期 avoid miss delay/put off
建议完成多联系 advise finish practise
喜欢想象禁不住 enjoy imagine can't help
逃避冒险莫原谅 escape risk excuse
常见V-ing作介词宾语
be good at、dream of、care about、be concered about、be interested in、feel like、insiston、think of、aim at、set about
