they are和there are的区别：中文含义不同、用法不同。they are的含义为“他们是”，可搭配可数名词复数形式或副词，是主谓词组；there are的含义为“某处有某人”，可搭配可数名词复数形式，是引导词组。
一、they are的含义及用法
they are作为主谓词组，意为他们是。例句有：
1、They are one of this year's hot new bands.
他们是今年走红的新乐队之一。
2、They are here because of us.
他们是因为我们来这里的。
3、They are an established company with a good reputation.
他们是一家地位稳固、信誉良好的公司。
4、Phone them up and find out when they are coming.
给他们打个电话，问问他们什么时候来。
5、They are now living together on a permanent basis.
他们现在决定长期同住。
6、They are pondering whether the money could be better used elsewhere.
他们正在斟酌能否把钱花到其他更适当的地方。
二、there are的含义及用法
there are作为引导词组，意为某处（某时）有某人（某物）。例句有：
1、There are so many different makes to choose from.
有很多不同的型号可供选择。
2、There are other factors over and above those we have discussed.
除了我们所讨论的之外，还有其他因素。
3、There are no significant differences between the two groups of students.
这两组学生没有明显差别。
4、There are only so many hours in a day.
一天不过这么几个小时。
5、Fundamentally, there are two different approaches to the problem.
从根本上说，这个问题有两种不同的处理方法。
6、There are still a few residual problems with the computer program.
电脑程序还有一些残留问题。
