I have a few concerns.
B2Expressing mild worries.
I'd appreciate it if...
B2Politely requesting something.
This isn't quite right.
B2Something is inaccurate or unsatisfactory.
I'm having trouble with...
B2Describing a problem encountered.
Could you please...
B2Politely making a request.
I think we could do better.
B2Suggesting an improvement.
This is unacceptable.
B2Expressing strong dissatisfaction.
I'm disappointed with...
B2Expressing disappointment.
It's not up to standard.
B2Something doesn't meet expectations.
I suggest we...
B2Making a suggestion.
My recommendation is...
B2Formally suggesting something.
I have a suggestion.
B2Simply stating a suggestion.
Perhaps we should...
B2Suggesting something tentatively.
I'm concerned that...
B2Expressing worry about something.
This is causing problems.
B2Stating a problem directly.
I'm afraid there's been a mistake.
B2Politely pointing out an error.
To improve this, we should...
B2Suggesting a solution to a problem.
I'd like to raise a concern about...
B2Formally expressing a concern.
It would be helpful if...
B2Suggesting something that would be beneficial.
I think it's important to...
B2Highlighting the importance of something.
One possible solution is...
B2Offering a potential solution.
Going forward, we should...
B2Suggesting a course of action for the future.
I have a bone to pick with you.
C1I have a complaint or grievance.
This leaves much to be desired.
C1This is unsatisfactory.