Expressing your opinion

I (really) think that …

I believe (that) …

I’m sure that …

In my opinion / My opinion is …

I feel that …

I guess/imagine …

I have no doubt that / I’m certain that …

I strongly believe that …

I’ve never really thought about this before, but …

My personal opinion is that / Personally, my opinion is that …

To be honest / In my honest opinion, …

As far as I know, …

I’m absolutely certain that …

I’m fairly confident that …

I’m pretty sure that …

It seems to me that …

For me/ From my point of view, …

I do believe/ feel/think …

I have come to the conclusion that …

I might change my mind later, but …

I’m (absolutely) convinced that …

To my mind / To my way of thinking, …