is的复数形式是are
is英 [ɪz] 美 [ɪz] vt.& vi.是（be的三单形式）n.存在过去式： was
(be 的第三人称单数现在时形式,常放在其他词后缩写为 -’s) Is is the third person singular of the present tense of be .Is is often added to other words and shortened to -'s .
双语例句
1
This man is an animal, a beast
这人是个畜生，是个野兽。
2
Clearly there is a problem here
显然，这里出了个问题。
3
This is a common fallacy which has no basis in fact.
这是一个没有事实依据的常见谬误。
4
Choosing the right type of paint for the job is half the battle.
选对了涂料，这项工作就成功了一半。
5
My life is ruined and I suppose I only have myself to blame.
我的一生都毁了，我想这只能怪我自己。