I have an opinion on this.

我对此有一个看法。

Give your opinion on Alistair's actions.

发表你对阿利斯泰尔行为的看法。

What is your opinion on this issue?

你对这个问题有什么看法？

What is your opinion on this subject?

你对这个课题有什么看法？

He has a strong opinion on this issue.

他对这个问题有有力的看法。

His opinion on the matter is immaterial.

他对这件事的看法是不重要的。

I agree with your opinion on the project.

我同意你对这个项目的看法。

The netizen shared his opinion on the forum.

这位网民在论坛上分享了他的观点。

I disagree with your opinion on this matter.

我不同意你在这件事上的看法。

Her opinion on the matter seems unchangeable.

她对这件事的看法似乎是不可改变的。