1.
much too+ 形容词或副词的原级,如much too fast
too much+
不可数名词,如too much water
too many+ 复数可数名词,如too many people
没有many too这种形式。
2.
few, a few接复数可数名词,few表示否定的意思,很少,几乎没有,a few表示肯定的意思,一些,几个
如
There are few eggs in the fridge.冰箱里没几个鸡蛋了。
There are a few eggs in the fridge.冰箱里有几个鸡蛋。
与few, a few含义相同的分别是little,与a little,所不同的是little与 a little接不可数名词。
in接大的时间,年,月,季节等,如
in 2019, in March, in spring
on的时间与天,日有关,如on Sunday, on Sunday morning, on March 3rd, 2019, on Women's Day, on a cold mrning
at后接具体的时间,几点几分,at 10:59
追答on a cold morning,回答里把morning 写错了,在一个寒冷的早晨(也是某一天的早晨,所以含义与天有关,用on)