1. 用于 a lot of (=lots of)，意为“许多”，可用于修饰可数或不可数名词。如：
We need a lot of [lots of] money. 我们需要很多钱。
He has quite a lot of [lots of] friends. 他有很多朋友。
修饰主语时，谓语的数取决于它所修饰名词的数。如：
A lot of money was spent on it. 在它上面花了很多钱。
A lot of people were interested in it. 对此感兴趣的人很多。
2. 单独用的a lot具有以下用法：
(1) 用作主语。如：
A lot hangs on this decision. 很多事情都取决于这一决定。
A lot will depend on how she responds to the challenge. 在很大程度上将取决于她对这一难题的反应。
单词：a lot的近义词、反义词、形近词辨析
a lot/a lot of/lots of
We have a lot to do.我们有很多事情要做。
There are a lot of bread on the table.桌上有许多面包。
Lots of people went swimming in the river yesterday.昨天很多人去河里游泳。
<辨析>这三个短语都可以作“许多”解。a lot 可以用作名词，当宾语；也可以作副词，修饰动词；或用于修饰比较级。如：
We works a lot at home.他在家里干很多活。
She is a lot cleverer than I am.她比我聪明很多。
a lot of 与 lots of 可以互换，修饰可数名词或不可数名词，多用于肯定句。在疑问句和否定名中常用 many 或 much 代替。如：
He has a lot of(lots of)books.他有许多书。
There is a lot of(lots of)news on the radio tonight.今晚广播（里）有很多新闻。
Are there many people in the park?公园里有许多人吗？
There isn't much ink in the bottle. 瓶子里墨水不多。
与单词：a lot 相关的例句或者名人名言
After my surgery they gave me a lot of medicine to take.
在手术之后他们给我吃了很多药。
I've met a lot of friends at school.
我在学校结识了很多朋友。
I sweat a lot whenever I get to work.
我每次去上班路上都会出很多汗。
My father gives me a lot of love and support.
我的父亲给予我很多爱与支持。
Thanks a lot!
非常感谢！
※First love is only a little foolishness and a lot of curiosity. George Bernard Shaw——初恋就是一点点笨拙外加许许多多好奇。英国剧作家 肖伯纳.G
※Learning any language takes a lot of effort. but don't give up.
