精选优质文档-倾情为你奉上1. sth need(s) to be done=sth need(s) doing 某物需要. My computer needs to be fixed./fixing.need to do sth.（某人）需要做某事 -否定dont/doesnt need to do sth. -Need I do it now?-Yes, you must./No, you neednt/dont have to-neednt do sth.不需要做某事（情态动词）must必须-主观-表推测The lights are on. She must be in the office.(灯亮着，她肯定在办公室)The lights are off. She cant be in the office.（灯关着，她肯定不在办公室）have to/has to必须，不得不（客观）He is ill, so he has to stay at home.I dont think we have to
