Eng: Don't need

用不著

Can't use, Don't need, Weren't

Can't, Couldn't, Didn't, Don't

用不到

Don't need, Wouldn't

Can't, Couldn't, Has not, Never, Not

不需要

Didn't need, Doesn't need, Doesn't need to, Don't need, Don't need to

Had to, Has to, Have to, Having to, Need, Needed, Needing, Needs, Require, Required, Requires, Requiring, To have to, To need, To require