17. decide to do sth. 决定做某事

　　She has decided to travel all over the world.

　　她已经决定周游世界了。

　　18. demand to do sth. 要求做某事

　　19. determine to do sth. 决心做某事

　　He determined to learn French.

　　他下定决心学习法语。

　　20. expect to do sth. 等待做某事

　　I am expecting to hear from you soon.

　　我期待着早点收到你的来信。

　　21. fear to do sth. 惧怕做某事

　　She fears to live on the mountain.

　　她害怕住在山上。

　　22. prepare to do sth. 预备做某事

　　They prepared to go hiking this Sunday.

　　他们准备周日去远足。

　　23. pretend to do sth. 伪装做某事

　　She pretended not to see me.

　　她假装没有看到我。

　　24. promise to do sth. 答应做某事

　　I have promised to give the children some books.

　　我已经答应给孩子们一些书了。

　　25. refuse to do sth. 拒绝做某事

　　She refused to buy a new cellphone for her boy.

　　她拒绝给她儿子买新手机。