a lot of前面可以用is，也可以用are。当a lot of后接可数名词的复数时，前面用are；当a lot of后接不可数名词时，前面用is。

a lot of前用什么

a lot of前面不是只能用is。

a lot of表示许多，等于many、lots of,常用于名词前面，a lot of friends许多朋友，也可以说many friends或lots of friends.

与many意思相同时，后面接可数名词的复数形式，如There are a lot of trees in the park。

与lots of意思一样时还可以接不可数名词，如There is a lot of rain this year。

a lot of双语例句

I am spending a lot of money and time on this boat, but it is worth it

我在这艘船上花了很多金钱和时间，但都很值得。

I have lost a lot of weight

我体重减了不少。

Is there a lot of effort and money going into this sort of research?

这种研究目前是否有大量的人力和资金投入？

I think a lot of people still underestimate him

我觉得很多人仍然低估了他。

You've caused us a lot of trouble

你给我们造成了很多麻烦。