助动词是动词 为何不能单独作谓语答:3) 最常用的助动词有:be, have, do, shall, will, should, would [编辑本段]助动词am,is,are的用法 §1) am,is,are +现在分词,构成进行时态,例如:They are having a meeting. 他们正在开会。English is becoming more and more important. 英语现在越来越重要。2) am,is,are + 过去...
英语里的什么主语谓语宾语,什么情态动词,关系副词什么的,我老弄不...答:情态动词有五类: ①只做情态动词:must,can(could),may(might),,ought to ②可做情态动词又可做实义动词:need,dare ③可做情态动词又可做助动词:shall(should),will(would) ④具有情态动词特征:have(had,has) to,used to ⑤情态动词表猜测 5.关系副词: 1.关系副词兼有副词...
情态动词包括哪四种?分别是什么?答:may (might), must, need, ought to, dare (dared), shall (should),will (would).①只做情态动词:may, might, must…②可做情态动词又可做实义动词:如:need, dare…③具有情态动词特征:have(had,has) to,used to, ought to ④可做情态动词又可作助动词:如:shall(should),will(...