三单后面加什么be动词

三单的be动词在一般现在时用is或在一般过去时was.

例句

New York is where the action is.

纽约是个热闹活跃的地方。

Cooper was a good mixer, he was popular.

库珀是个善交际的人，很受欢迎。

Where is Sophy? Is she safe?

索菲在哪儿？她没受到伤害吧？

He is an asthmatic who is also anaemic.

他是一个哮喘病人，并且还贫血。

He is in no doubt as to what is needed.

他对需要些什么心中有数。

He was rowing for all he was worth.

他在拼命地划船。

It was a Monday, so she was at home.

那是个星期一，所以她在家。