第1个回答 2016-10-12
My favorite subject is English, but I'm not good at it.
第2个回答 2016-10-12
English is my favorite subject, but I'm not good at it.
be good at=do well in:擅长于
第3个回答 2016-10-12
Though English is my favorite subject, I'm not good at it at all.
I am not good at English though it is my favorite subject.本回答被网友采纳