This's a dog.这句话有什么错?

This's a dog.这句话有什么错?
This's a dog.这句话有什么错?

This's a dog.这句话有什么错?
this is 不能写成this's
但that is 可以写成that's

应该为 This is a dog.
this`s不能这样所写

没有错吧