a lot of和lots of有什么区别？

lots of修饰可数和不可数名词
a lot 副词 如：thanks a lot
a lot of只能修饰可数名词
a lot of=lots of 许多的 可以修饰可数名词和不可数名词
a lot是表示程度的一个词组 thanks a lot 多谢 know a lot about China 对中国了解很多
lot的非正式写法,就是说书面语用a lot of 较多,口语用lots of 较多(可能...lot.“他的朋友是一群陌生人,”或“我不认识他的那群朋友。”
a lot of和lots of都可以修饰可数和不可数名词

a lot解释为非常多是副词

a lot of：many or much大量的；许多的（后接可数名词或不可数名词）
I'm under a lot of pressure。China does a lot of trade with many countries。It takes a lot of labor to build a railway。I've given the matter a lot of thought。He wasted a lot of time in those years．
lots of：He's lots of run。You have lots of time to finish the work. 。Lots and lots and lots of women。This factory churns out lots and lots of cars a day。She has lots and lots of money.。She had lots and lots of friends。He bought lots and lots of new clothes。
理论上来说没有明显的区别，都可以接可数名词或者不可数名词。但是看常见例句可以发现，lots of 有更多的感情色彩，还有修饰用法“lots and lots of“”，表示非常非常多，a lot of 就没有这种用法。其他没有什么区别，抽象和具体都可以用的。
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