This apple is sweet.改成否定句,意思不变

This apple is sweet.改成否定句,意思不变
This apple is sweet.改成否定句,意思不变

This apple is sweet.改成否定句,意思不变
This apple isn't bitter.
Who has never tasted bitter,knows not what is sweet.[谚]不尝黄连苦,怎知蜂蜜甜.