B.so 名词作代词
代词解释时有以下用法：
so
[用作 say,call,speak,tell,think,hope,expect,suppose,imagine,fear,hear,do等动词的宾语]————————————————〉
看清楚这个“特殊用法”含有do,
this 作代词无此用法
—————————————————————〉
I think so.
我想是这样.
Well,I told you so,didn't
我不正是对你这样说的吗?
这比较特殊!
Just rember this!
A.this 为连词或代词；无此用法
I didn't ask you to do it like this!
Yes!