阶见的有:finish, mind, be worth, be busy, practice, have fun, have trouble/problem(in), spend...(in), feel like, be used to(习惯), give up, keep on, consider, suggest, can't help。我们可按下面的顺口溜记忆这些词。 (二)动词不定式动词不定时的构成不定时的基本形式为:to+动词原形,有时可以不用to,这里的to 是不定式符号,本身无词义,动词不定式的否定形式是not+(to+)动词原形。动词不定式的句法功能功能例句说明主语To speak English is not easy for us=It is not easy for us to speak English. 讲英语对我们来说不容易。作主语用的不定式,用it作形式主语, |