英語でのコミュニケーションでは、率直な意見交換が大切です。そのためには、自分の立場（賛成・反対）を明確に伝えることが必要です。相手の意見に同意する場合には、“I agree with you (about ～).” や “I’m of the same opinion.” などの表現が使われます。逆に、反対の場合には、“I can’t agree with ～ ” や “I see things differently.” などの表現が使えます。
In the classroom
A: I think the recent technology is fantastic!
B: I see what you mean, but I worry about our privacy.
A: But technology makes our lives easier.
B: I’m with you there, but I can’t fully agree with you.
B: I see what you mean, but I worry about our privacy.
A: But technology makes our lives easier.
B: I’m with you there, but I can’t fully agree with you.
・I’m of the same opinion.
・That’s just what I was thinking.
・That’s just what I was thinking.
・I agree in principle, but there are other problems you should think about.
・Yes, but don’t you think technology has greatly improved our lives?
・Yes, but don’t you think technology has greatly improved our lives?
・Actually, I think dogs are smarter than cats.
・I have a different opinion about that.
・I have a different opinion about that.