so that so...that such that too to 的用法

1 so that
引导目的状语从句时,表示“以便；为了”,从句中常使用can /could /may /might /will /would /should等情态动词或助动词；引导结果状语从句时,从句中一般不用can和may等词,在so that前可以用逗号,意思是“因此;所以”.如：The little boy saved every coin so that he could buy his mother a present on Mother's day.
2 so ...that ..
so＋形容词或副词＋that ...引导结果状语从句.意思是“如此……以致于……”.如：When the football fans saw Beckham,they got so excited that they cried out.
3.
such…that作“如此…以致”解,连接一个表示结果的状语从句.与so…that
意思相同,但用法不同.
4.
too+形容词/副词+动词不定式结构简称为too...to结构.这种结构是英语中 常用的一种句型,在大多数情况下表示否定意义