1. buy sth for ab./ buy sb. sth 为某人买某物
3. nothing...but + V.(原形) 除了……之外什么都没有
4. seem + (to be) + adj 看起来
5. arrive in + 大地方 / arrive at + 小地方 到达某地
6. decide to do sth. 决定做某事
7. try doing sth. 尝试做某事 / try to do sth. 尽力做某事
8. enjoy doing sth. 喜欢做某事
10. start doing sth. 开始做某事=begin doing sth.
11. stop doing sth. 停止做某事 区分: stop to do sth. 停下来去做某事
12. dislike doing sth. 不喜欢做某事
14. so + adj + that + 从句 如此……以至于……
16. tell sb. (not) to do sth. 告诉某人(不要) 做某事
17. keep doing sth. 继续做某事
18. forget to do sth. 忘记去做某事 / forget doing sth 忘记做过某事