a lot ,可置于句末,意思是很多,通常修饰动词,如:thanks a lot . 词组: a lot of 后接名词,代词,动名词等都可以.还有lots of ,意思差不多,接可数名词,不可数均可. lot,(指刚提到的数量的)全部,整个儿 You can use the lot to refer to the whole of an amount that you have just mentioned. 本条来自金山词典. 希望对你有用. 再问: 那个用于否定和肯定啊 再答: 只能说什么反义词之类的啊,不用于否定啊。