精选优质文档-倾情为你奉上小学情态动词的学习情态动词有can (could), may (might), must, have to, shall (should, will (would),等。 情态动词不能单独使用,必须与其后的动词原形构成谓语一、 can, couldCan you lift this heavy box?(体力) Mary can speak three languages.(知识) Can you skate?(技能) 二may, might 表示请求和允许。might比 may语气更委婉,而不是过去式。表示“不可以,禁止”-Might/ May I smoke in this room? No, you mustnt. - May/Might I take this book out of the room?三、 must, have to 表示必须、必要。 You must come in time. 在回答引出的问句时,如果是否定的,不能用mustnt