不定式的全称是“动词不定式,是一种非限定动词,由不定式符号to+动词原形构成。动词不定式的被动形式除了一般形式外还有其完成式和进行式。下面主要讲不定式一般式的用法: (1) 表示与谓语动作同时发生或略先于谓语动作的动作。如: He seems to be tired. 他似乎累了。 Who heard him say that? 是谁听到他这样说的? I’m sorry to hear that. 听到这事我很难过。(to hear 略先于am sorry) 引用地址:http://www.nmet168.com/Article/200905/2431.html (2) 一是表示将来,即表示发生在谓语动作之后的动作。如: We decided to leave early. 我们决定早点动身。 He asked me to buy him some paper. 他叫我给他买些纸。 We expect him to come in time. 我们希望他能及时来。 |