Eng

Having to...

只能

Can only, Could only, Had to, Has, Have to, Having to

必須

Had to, Has to, Have to, Having to, Must, Obligatory, Require, Required, Requires, Requiring, To have to, To require

不得不

Had to, Has to, Have to, Having to, Must

(Am not, Are not allowed, Cannot, Is not, Not be, Was not, Were not)

需要

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