必须做某事, 不得不做某事

be under the necessity of doing sth. be reconciled to doing sth. be crazy on doing sth. shove sth. under the carpet be sick of doing nothing cajole sb. out of doing sth. argue sb. out of doing sth. frighten sb. out of doing sth. be under the ferule be under the hammer be tolerant of sth. Necessity is the mother of invention. under the necessity of be studious of doing sth grant sb the privilege of doing sth take the responsibility of doing sth be under the jurisdiction of do sth of necessity be reconciled to doing sth be incompetent for doing sth be sticky about doing sth