YOU SAID:

you can't sit on chairs

INTO JAPANESE

あなたは椅子に座ることができません

BACK INTO ENGLISH

You can't sit in a chair

INTO JAPANESE

椅子に座ることはできません

BACK INTO ENGLISH

Can't sit in a chair

INTO JAPANESE

椅子に座れない

BACK INTO ENGLISH

I can't sit in a chair

INTO JAPANESE

椅子に座れない

BACK INTO ENGLISH

I can't sit in a chair