英文 可以不vs不可以

可以不: don't have to. e.g. You don't have to do homework.
不可以: may not e.g. You may not do homework until after dinner..
也許不 may not e.g. You may not do homework if I leave the
television on.
不能 can not e.g. You cannot do homework and watch
television at the same time.
可以選擇不 can choose not to.
e.g. you can choose not to do homework.

英文 可以不vs不可以~ you may see to do it ;
~ pick up your own decision ;
~ it's up to your choice ;
~ select your best decision ;