I think he is must abolish.病句吗??

I think he must be abolished

是病句，应该是must, 因为abolish为动词

语法不对，不用is，应使用被动语态，根据句子意思，abolish也不对

当然了！

I think he must be abolish.
must be 表示肯定预测，这里一句内不能有两个谓语

是,从句中有两个谓语,应该是
I think he must be abolish
abolish 是废除的意思,我认为他应该被废除,被动句