many、much、toomany、toomuch、 muchtoo、a lot、 a lot of、lots of、

many和too many后面都跟可数名词复数,many意思是许多,too many是太多,much, too much 后面都跟不可数名词,意思同前两个.too much还可以用在动词后面,如He always speaks too much. much too意思是“太..."后面跟形容词或副词,如Yesterday it was much too cold.
a lot of=lots of 后面即可以跟可数名词复数,又可跟不可数名词.a lot通常用在动词后面如：He talked a lot. little和a little后面跟不可数名词,few 和a few后面跟可数名词,little 和few表示否定意思“很少,几乎没有”,a little(一点）和a few(一些）表示肯定意思