13.　 stop doing / stop to do

停止做。。。/停下来去做。。。

12.　 It’s + adj. for sb. to do sth.

干。。。对某人来说很。。。

11.　 drop out of school

10.　 an eight-year-old boy

9.　　　 know sb. well 非常了解某人

8.　　　 tell me more

7.　　　 That sounds interesting

6.　　　 in fact

5.　　　 hear about / hear of / hear from

听说　　　　　　　 收到。。。的来信

4.　　　 a little / a few