so和such都有“如此、这么、那么”的意思，可进行同义改写。具体用法与区别如下：
一、so是副词，主要用来修饰形容词和副词；such是形容词，用来修饰名词。他们后面接单数可数名词的用法如下：
①so+形容词+a(n)+名词。如：
——She is so diligent a student. 她是个如此勤奋的学生。
②such+a（n）+形容词+名词。如：
——She is such a diligent student. 她是个如此勤奋的学生。
二、so和such分别与“that”连用时，意思基本一样，但句型结构不同。
在结果状语从句中，so...that...和such...that...的主要区别在于：so用来修饰形容词或副词，而such用来修饰名词。但两者都表示“如此...，以至于...”如：
——①He was so ill that two nurses attended on him. (他病得那样重，有两个护士照顾他。)
——②He is such a good egg that everyone likes him. (他是一个大好人，个个都喜欢他。)
三、特殊情况
1、如果名词前有表示数量多少的many、much、few、little等修饰词时，只能用so。如：
——①Stress can be the undoing of so many fine players. (紧张可能是这许多优秀选手失败的原因。)
——②Don't make so much fuss over losing a penny. (别为丢了一便士大惊小怪的。)
2、当little表示“小”的意思用来修饰可数名词时，近似于small，这时只能用such。如：
——There were such little children that they couldn't clean the house. (这些孩子那么小，不能打扫房间。)
参考资料：such的含义及与so的区别_百度百科
She
has
bought
paper,
pens,
and
other
such
stationery.
她买了纸、笔以及诸如此类的文具。
2.(与that连用)如此的...(以致)
He
is
such
a
good
teacher
that
all
his
pupils
like
him.
他是位极好的老师,所有的学生都喜欢他。
3.(表示惊叹或加强语气)这样的,这等的
It
was
such
an
exciting
game.
那场比赛真是精彩刺激。
4.上述的
pron.
这样的人(或事物);上述的人(或事物)[M]
Such
were
her
words.
她就是这么说的
such与so的区别与用法
such与so的意思都是“如此，这样”。但两者用法根本不同，与what和how引导的感叹句相类似。
1、such后面主要是修饰名词。即：such＋a/an＋adj.＋n.或a/an＋such＋adj.＋n.。如果名词是不可数名词或复数名词，则不可以用不定冠词a或an。如：
①He
has
such
a
beautiful
bike.
We
all
go
to
see
it.
②It's
a
such
fine
day.
We
al
want
to
go
to
fly
a
kite.
2、so后面只能跟形容词或副词。即：和so＋adj.或adv.不过，so后面也可以跟名词，但该名词必须是单数可数名词。用法为：so+形容词+a或an+单数可数名词。如：
①The
tiger
is
so
big.
And
the
cat
is
so
small.
②She
is
so
lovely
a
girl.
3、它们后面还可以与that从句连用。即：such…that和so…that意思是“如此……以致……”。如：
①She
is
such
a
clever
girl
that
she
can
make
much
progress
in
math
exam.
②His
brother
is
so
young
that
he
can't
go
to
school.
注：当名词前的形容词为表示数目的词时，such必须换成so。如：
①There
are
so
many
people
that
we
can't
go
past.
②I
ate
so
much
food
that
I
didn't
want
to
go
any
farther.
注意这一句话：He
is
such
a
little
boy
that
he
can't
read
or
write.(这一句话中的a
little不是“一点”的意思，而是“一个小的”的意思，所以，前面仍然用such，而不用so。
so和such的用法和区别