1.　　　 May I / Could I speak to … ? 电话用语。　 My I speak to Tom ?

8.　　　 Thank you for doing sth . / for sth .　　 因。。。而感谢某人　 Thank you for inviting me to your home .

Lesson 50

7.　　　 invite sb to do sth 邀请某人做…　 He invited me to come to her home .　

6.　　　 邀请的应答： Thanks a lot for …, I would like to …, I’m sorry ,but I can’t … .

5.　　　 would you like to …　 ?　 I hope you can …　 邀请　 would you like to come to my party ?

4.　　　 have = hold 举行　 hold a meeting　 have a sports meeting

3.　　　 be sure that 从句　　 He is sure that he will succeed .　 He is sure that he will live to ninety years old .

2.　　　 be sure of / about +名词，代词，动－ing .相信，对…有把握，主语必须是人。He is sure of his success ./ living to 90.

1.　　　 forget + doing sth (动作已经发生)，+to do sth (动作未发生) 忘记做什么。

2. cross 横过－动词　 We walked across the street .　　 We crossed the street .

Lesson 49