Eng: It doesn't

It doesn't have to be

不必是

It doesn't have to be solid or physical

不必是堅固或物理的

It doesn't hurt

一點都不痛

It doesn't hurt at all

一點都不痛

It doesn't matter

沒關系

沒事兒

It doesn't seem likely

難道

It doesn't seem likely that you forgot

難道你忘了