1. be worth doing 值得被……(主动形式表被动含义)

　　The book is well worth reading.这本书很值得被读。

　　2. be busy doing 正忙着做……

　　I am busy preparing for the coming final exam.我正忙着为即将到来的期末考试做准备。

　　3. too…to do... 太……而不能……

　　The boy is too young to go to school.这个男孩太小了以至于不能去上学。

　　4. so+adj./adv. as to do 如此……以致于......

　　She worked so hard as to pass all her tests.她学习如此努力以致于通过了所有考试。

　　5. It takes sb. some time to do sth. 做某事花费某人......时间

　　It takes me 15 minutes to go to school every day.每天上学花费我15分钟的时间。

　　6. sb.spends some time(in)doing sth. 某人花……时间做某事

　　I spend 20 minutes in doing my homework every day.我每天花20分钟写作业。

　　7. It is+adj.+for sb. to do sth. 对某人来说，做某事是……的

　　It is important for zookeepers to protect the pandas.对动物园管理员来说，保护动物是重要的。

　　8. wish sb.+n./abj 祝愿某人…… I wish you good luck. 祝你好运。

　　9. sb. have some difficulty/trouble(in)doing sth. 某人做某事有困难

　　He has some difficfty (in) studying English.他在学英语方面有困难。

　　10. sb.can do nothing but do sth.=have no choice but to do 只好/只能......

　　I can do nothing but tell him the truth.我只好告诉他事实。

　　11. It is said that… 据说……

　　It is said that you are going abroad.据说你要出国。

　　12. not…until… 直到……才......

　　I didn’t go to sleep until my parents came back.知道我父母回来我才上床睡觉。