1. be worth doing 值得被……(主动形式表被动含义)The book is well worth reading.I am busy preparing for the coming final exam.The boy is too young to go to school.4. so+adj./adv. as to do 如此……以致于......She worked so hard as to pass all her tests.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.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.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.8. wish sb.+n./abj 祝愿某人…… 9. sb. have some difficulty/trouble(in)doing sth. 某人做某事有困难He has some difficfty (in) studying English.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.11. It is said that… 据说…… It is said that you are going abroad.12. not…until… 直到……才...... I didn’t go to sleep until my parents came back.13. 主语+find/consider/think+it+形容词或名词+不定式I find it interesting to see this film.14. so+adj./adv.+that 如此……以致于...... such+n.+that…如此……以致于...... The lady is so happy that she can’t say a word. She is such a kind girl that everyone likes her in her class.15. why not do sth 为什么不做……呢? why not go over your notebook?16. It's time to do sth. 到做某事的时间了It's time to clean the classroom.17. sb. devote oneself/one's life to sth./doing. 致力于做某事She devoted herself to teaching English.18. It is/ was+被强调部分+that/who… It is this boy who broke the window.19. would like to do 想要做某事 had better (not) do sth 最好(不)做某事 I would like to drink some water.20. It is no use doing sth. 做某事没有用处 It is no use watching too much TV.21. 主语+have no idea+从句 不知道……I have no idea when he will come back.I used to make a joke on him.I have been used to getting up early.23. It is possible/probable/likely that… 可能…… It’s possible but not likely/probable that he’ll come here next month.