though， although 后面不能再用but。
这个句子可以用but。
Most of his classmates agree with the opinion that he is bad,but he has his strong points。
大部分同学同意他很坏这个观点，但他还是有优点的。
避免though although 后面跟but。
that 后面要跟一个句子。
agree with the opinion that he is bad 这里的that he is bad,是opinion的同位语。
你写的也不错：Most of his classmates agree with the opioion that bad as he is , he has his good points。
这样写就不能加but了。
因为bad as he is, 是从although he is bad 转化过来的。
例如：Old as I am, I can still fight。 我虽然老，但仍能战斗。
= Although I am old,
Try as you may , you will never succeed。
你尽管试吧，但绝不会成功。 == Although you may try,
As bad as he is, he has his good points。 他虽然不好，但也有其优点。
也可以这样说：让步状语后面不能加but。
问：不定式!you couldn't tell lies to help him. 在这个句子中 怎样解释不定式作让步状语!!
答：you couldn't tell lies to help him. 在这个句子中 怎样解释不定式作让步状语!! “退一步说，就算是为了帮助他，你也不应该撒谎...详情>>
