比如:情态动词后的是原型,不可数名词后面不能加s,well是副词,要修饰...答:例句:Must I clean the dining room at once? 我必须马上打扫餐厅吗?肯定回答:Yes, you must.否定回答:No, you needn't. No, you don't have to.五、have to的用法have to(第三人称单数用has to),不得不,后加动词原形,58虽属于情态动词,但它有人称、数及时态的变化,它的疑问句否定句的构成也和...
情态动词后面一定加动词原型吗?不能加别的词性的词,比如形容词或名词吗...答:是的 情态动词: can, could ,may, might, need, must, have to, will, shall, would(愿意), should(应该), ought to (应该), had better(最好).dare(敢)等.情态动词后用动词原形.一般情况下,否定形式直接加not 情态动词在句中放在谓语动词之前, 谓语动词前若有助动词,则在助动词之前,疑问...