28. as + 形容词./副词+as sb. could/can 尽某人的…能力　如：

　　 Zhou run as fast as her could/can. 她尽她最快的能力去跑。

27.支付不起… 　can’t /couldn’t afford to do sth.

　 　　　 can’t / couldn’t afford sth.

　 如：I can’t/couldn’t afford to buy the car.

　　　 I can’t/couldn’t afford the car.　 我买不起这个辆小车。

26. fifteen-year-old 作形容词　15岁的　

　 fifteen-year-olds 作名词指15岁的人

　 fifteen years old 指年龄　15岁　如：

a fifteen-year-old boy　一个15岁的男孩

Fifteen-year-olds like to sing. 15岁的人喜欢唱歌。

I am fifteen years old . 我是15岁。

25.　 help sb. with sth. 帮某人某事　

help sb. (to ) do sth. 帮某人做某事　

She helped me with English.　她帮助我学英语。

She helped me (to) study English。　她帮助我学习英语。

24. it seems that +从句　看起来好像……　如：

　It seems that he has changed a lot. 看起来他好像变了许多。

23. move to +地方　搬到某地　如：I moved to Beijing last year.

22.　 make sb./ sth. + 形容词　make you happy

　　 make sb./ sth. + 动词原形　 make him laugh

21. how to swim 怎样游泳　

　不定式与疑问词连用：动词不定式可以和what, which, how, where, when 等引导的疑问句连用，构成不定工短语。如：

　　 The question is when to start. 问题是什么时候开始。

　　 I don’t know where to go. 我不知道去哪。

20. be different from 与…不同　

19. in the last few years. 在过去的几年内　常与完成时连用　如：