雅思口语：拒绝邀请

 　　1.I'm afraid I can't. 恐怕我不能来。

　　2. I have things to do. 我有事情要做。

　　3. I'm kind of busy. Maybe later¹. 我有点儿忙,也许以后吧。

　　4. I'm busy right now. Sorry. 我现在很忙，抱歉。

　　5.I can't come over right now. 我不能马上过来。

　　6.take a rain check on sth (改期)

1 later   

adv.过后，后来；adj.以后的，更后的，较晚的

参考例句：

• He didn't turn up until half an hour later.半小时后他才出现。
• This part of the hospital was built on later.医院的这个部分是后来增建的。