is是动词，用于第三人称单数现在时，常放在其他词后缩写为-’s。例如，He's a student。
is词性及解释
vi.
1.(用于第三人称单数现在时)是[L]
The picture on the wall is beautiful.墙上的画很美。
Mr. Smith is a very good English teacher.史密斯先生是个很好的英语教师。
助词v.aux.
1.(与v-ing连用构成现在进行时;与v-ed连用构成被动语态)
Mr. Ward isknown as a great painter.沃德先生是一位遐迩闻名的大画家。
What is she doing over there?她在那儿做什么?
is双语例句
This man is an animal, a beast
这人是个畜生，是个野兽。
Clearly there is a problem here
显然，这里出了个问题。
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。
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。
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。
