英语入门对话：64 Contrasting

On the other hand,

However,

Yes, but . . .

You may be right, but . . .

I may be wrong, but . . .

Correct me if I'm wrong, but . . .

On the contrary,

(Be careful with this one!)
It appears to be a direct negation¹ of what was just stated,
but it can actually be an emphatic² reaffirmation of one's own opinion.

For example: It's not hot. On the contrary, it's cold.

("Not hot" and "cold" mean the same thing.)

1 negation   

n.否定；否认

参考例句：

• No reasonable negation can be offered.没有合理的反对意见可以提出。
• The author boxed the compass of negation in his article.该作者在文章中依次探讨了各种反面的意见。

2 emphatic   

adj.强调的，着重的；无可置疑的，明显的

参考例句：

• Their reply was too emphatic for anyone to doubt them.他们的回答很坚决，不容有任何人怀疑。
• He was emphatic about the importance of being punctual.他强调严守时间的重要性。