急!!should,must,have to,need,can的用法区别答:should,must,need,can都是情态动词,后面都只能跟动词原形,分别解释为应该,必须,需要,可以。其中need可分为两类:一、need do,否定形式为needn't do,肯定回答为Yes,I need.否定回答为No,I needn't.二、need to do,否定形式为don't need to,肯定回答为Yes,I do.否定回答为No,I don'...
must,should,need,may,can之类的问句的肯定回答和否定回答答:must:yes,you must. no,you needn't.should:yes,you should. no,you needn't.need:Yes,you should/may/can/need. No.you needn't/musn't may:Yes,you may/can. No,you musn't/can't.can:yes,you can. no,you can't/you may not.打得好辛苦啊.~~
情态动词的用法,can,may,must,need,could,dared答:情态动词有can (could), may (might), must, have to, shall (should, will (would), dare (dared), need (needed), ought to等。 情态动词无人称和数的变化;不能单独使用,必须与其后的动词原形构成谓语 一、 can, could 1) 表示能力(体力、知识、技能)。Can you lift this heavy box...