is是什么词性

is是动词，用于第三人称单数现在时。

例句：

He is an asthmatic who is also anaemic.

他是一个哮喘病人，并且还贫血。

Eight hours on a bus is no joke, is it.

坐８个小时的公交车可不是闹着玩儿的，对吧。

扩展资料

He is in no doubt as to what is needed.

他对需要些什么心中有数。

It is a country where corruption is rife.

这是个腐败成风的`国家。

Is he really sick or is he just shamming?

他真病了，还是装的？