一、基本句型结构
1. It is/was + 形容词 + for/of sb. to do sth.
例:It's easy for me to learn English.(对我来说学英语很容易)
2. It's one's turn to do sth.
例:It's my turn to present today.(今天轮到我做报告)
二、时间状语从句
3. It takes sb. some time (money) to do sth.
例:It takes me an hour to finish my homework every day.(我每天花一个小时做作业)
二、固定搭配
4. It's time to do sth.
例:It's time to go home.(该回家了)
三、其他用法
5. 动词不定式作主语
例:To protect the environment is everyone's responsibility.(保护环境是每个人的责任)
6. 动词不定式作宾语
例:She decided to learn to play the guitar.(她决定学习弹吉他)
7. 动词不定式作表语
例:His dream is to travel around the world.(他的梦想是环游世界)
8. 动词不定式作后置定语
例:The problem to be solved is very important.(需要解决的问题非常重要)
补充说明:
动词不定式无人称、数的变化,不可作谓语,需通过it作形式主语
常见搭配如:want to do, need to do, be willing to do 等
以上例句覆盖了动词不定式在英语中的主要用法,适合不同语法场景的学习与练习。