a lost ofa lota lot of等这个系列（a lost）还有多少后面加什么?（可数名词吗?不可数名词吗?形

a lot 修饰动词,eg.Thanks a lot
a lot of 修饰可数或不可数名词 eg.There are a lot of trees on the hill.There is a lot of water on the floor.
a lost of 好像没有这种说法
表示许多的词还有：a number of/many+可数名词的复数,eg.I have many toys.
much +不可数名词,eg.There is much water here.
plent of +可数或不可数名词

a lot of=lots of,表示许多，后面即可以修饰可数名词，又可修饰不可数名词。

a lot of=lots of，都可修饰不可数名词与可数名词复数。a lot，是个副词，修饰动词，等于very much，常放在动词后面，如：I have learned a lot from him，我从他那里学到了许多东西。