It is our duty to try our best to deal with these problems.
尽最大努力处理这些问题是我们的责任。
The head teacher said it was necessary to talk with his mother.
校长说,和他妈妈谈一谈很有必要。
How to learn English well is important.
如何学好英语很重要。
To see is to believe.
眼见为实;百闻不如一见。
用作表语
动词不定式作表语,常说明主语的内容、性质、特征
The best way is to join an English club.
最好的办法是加入一个英语俱乐部
The first thing is to listen to the teacher carefully.
首先是要认真听老师讲课。
用作宾语
可以接带to的动词不定式作宾语的动词
要求选择同意(ask, choose, agree);
期望决定学习(expect, hope, decide, learn);
宁可假装知道(prefer, pretend, know);
希望想要愿意(wish, want, would like / love)。
We dcided to talk to some students about why they go there.
我们决定和一些学生谈谈他们去那里的原因。
He prefers to eat white bread and rice.
他更喜欢吃白面包和白米饭。
I‘d love to visitMexico.
我想要去参观墨西哥。
Then I started to watch TV.
然后我开始看电视。
I am beginning to understand my parents.
我开始理解我的父母。
I like to eat vegetables.
我喜欢吃蔬菜。
后接动词不定式或v-ing形式作宾语,意思差别较大的动词有forget, remember等。后接不定式作宾语,表动作尚未发生;后接ving形式作宾语,表动作已经发生。
stop to do停下来做另外一件事,to do是目的状语;stop doing停止做、不做当前这件事,doing是宾语;
try to do尽力做,try doing试试看;
go on to do接着做另外的事,go on doing继续做原来的事。
When I left home, I forgot to bring it with me.
我离开家时,忘记带上它了。
I stopped using them last year.
去年,我停止使用它们。