翻译：我不能

正确答案是 I can't。
can是情态动词，否定形式是can't，I can't be也行，没错，如：i can't be late。
但是can't是情态动词，后面的动词要跟原型，如：i can't meet my friends on school nights。

i can not
i can't
icannot
都行

I can't.
can已经是动词了 再加be动词重复了

I can not
是这个

I can't