.情态动词记忆口诀: 情态动词两要点;动词原形跟后面,说话语气较委婉,can表能力may许可,must责任或义务,否定回答neednt换;should应该,would愿,have to 被迫表客观. 注释:对must构成的一般疑问句作否定回答只能用neednt.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和could情态动词用法例句can/could表示能力1“I dont think Mike can type.” “Yes, he can.”2I can speak fluent English now , but I couldnt last year.在肯定句中，表示客观可
