more clever or cleverer

[Liza]

Hi,

which is correct: more clever or cleverer? and more polite or politer?

Thanks

[Alan]

Hi Liza,

I'm happy with either. Possibly I would prefer 'cleverer' but I wouldn't describe 'more clever' as incorrect.

Alan
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English as a Second Language
You can read my ESL story Conditionals

[Liza]

Dear Alan,

Thank you so much for your quick reply. May I have one more question in connection with this?

Which ending is correct?

He is cleverer than me.
He is cleverer than I.
He is clevere than I am.

Your dog is cleverer than my dog.
Your dog is celevrer than my dog is.
Your dog is clevere than mine.
Your dog is clevere than mine is.

Thanks a lot!
bye
Liza