13. Sorry, I have to go to class now.
不好意思，我得去上課了。
還能這樣說：
I am sorry, but I'm going to attend classes.
Sorry, I have to take lessons right now.
應用解析：
get a class 畢業考試優等；
in clas 在上課中；
in the same class 同一類型的，同等的；
take a class of 擔任……班的教師
14. If you have no other things, you may hang up the phone.
如果你沒有其他事，你就可以掛電話了。
還能這樣說：
If you have told me what you want, you can end the conversation.
You can ring off if you don't have other business.
應用解析：
I'll be hanged!
真想不到！會有這種事！
15. I feel tired now. What about making a call another day?
我很累了，明天再打好嗎？
還能這樣說：
I get tired right now. Could we contact another day?
I am exhaused at this moment. Do you mind calling back another day?
應用解析：
be tired out 累得要死，累極了；
feel tired 覺得疲倦；
be tired of 厭倦
16. She burst into tears after hanging up the phone.
電話結束時她突然哭了起來。
還能這樣說：
She cried loudly when she rang off.
She couldn't help crying outright when she ended the conversation.
應用解析：
go burst 失敗；
be bursting to do 渴望，急著要做；
at one burst 一陣，一口氣，一舉
17. See you tonight.
晚上見。
還能這樣說：
See you this evening.
See you in the evening.
諺語：
Outsiders see more than insiders.
當局者迷，旁觀者清。