BBC英语-unit5

单词：

family reunion:家庭聚会

A&E: Accident & Emergency (A&E) is a department in hospitals for patients without appointments, who need urgent help

bang:重击

dizzy:眩晕的

petrol:汽油

must不能用于过去和将来：There is no future or past form of must.

In informal British English, we sometimes use have got to instead of have to

例子：

• We have to change the engine oil.
• We’ve got to change the engine oil.

And in even more informal English we sometimes don‘t even say the have – so it becomes just got to. You might see this in text messages and on social media, for example:

• Got to change the oil.

And there’s one more way to say this: gotta. It’s the most informal of all these forms.

• Gotta change the engine oil.

BBC英语-unit5

原文：http://www.cnblogs.com/shirley-ict/p/5588832.html