不定式一般式用法

(1) 一是表示將來(lái)，即表示發(fā)生在謂語(yǔ)動(dòng)作之後的動(dòng)作。如：

We decided to leave early. 我們決定早點(diǎn)動(dòng)身。

He asked me to buy him some paper. 他叫我給他買些紙。

We expect him to come in time. 我們希望他能及時(shí)來(lái)。

(2) 表示與謂語(yǔ)動(dòng)作同時(shí)發(fā)生或略先於謂語(yǔ)動(dòng)作的動(dòng)作。如：

He seems to be tired. 他似乎累了。

Who heard him say that? 是誰(shuí)聽到他這樣說(shuō)的?

I’m sorry to hear that. 聽到這事我很難過(guò)。(to hear 略先於am sorry)