there are\is a lot of .

there are\is a lot of .
there are\is a lot of .

there are\is a lot of .
there are\is a lot of .这个句型是there be的句型 表示存在有.
在of加可数名词的复数形式 前面的谓语动词用are
也可以在of后面加不可数名词 前面的谓语动词用is

there are a lot of books !
there is a lot of water!

那有很多....
后面跟的东西是复数就用are
反之用is

there is a lot of water.
there are a lot of ducks.

is后填不可数名词，are后填名词复数形式

这有许多。。。

are 和 is都可以
如果a lot of 后面修饰可数名词就用are
若修饰不可数名词则用is
There _is___ a lot of good news in today’s newspaper.
There are a lot of people on the street