Marry ' best friend is funnier than she is .为什么末尾用she is

问题描述:

Marry ' best friend is funnier than she is .为什么末尾用she is
than后面可不可以用she来代替she is

上句=
Marry is funny,but Marry ' best friend is much more funnier.
比较级,省略
than后面不可以用she来代替she is
比较级要求同级比.