江西省吉安县凤凰中学初中英语语法复习 情态动词的基本用法（通用）

江西建军凤凰中学英语语法复习模态动词的基本使用在表达“能力”时，您可以用be able to替换can。请注意：为了表示更多时态或形式，可以在be able to前添加肋骨动词或情态动词，不能在can或could前。No one is able to do it。(=no one can do it。）we shall be able to finish the work next week。I havent been able to find any jobs。5月MIG ht1.表示“允许”2.“许可”(若有疑问)3.谈谈“可能性”You may go home now。He said that I might drink some beer。May I watch TV this evening？5月5日？- Yes，you may。He may/might come tomorrow。摩丝1.表示“义务”、“责任”。2.进行“积极推理”。3.那个否定mustnt禁止“(说话者)”.禁止.”；用于代表“无许可证”，而不是May not。Everybody must obey the rules。I must go now .this work must be finished as soon as possible。the Chinese language must have the largest number of speakers。You mustnt lend the book to others。在表示“客观需要”时，请使用have to代替must。也可以在Have to前加上排骨动词或情态动词，形成更多的形态。在Must之前是不可能的。You dont have to worry about that。he had to spend his child hood in hard work，heling his father on their small farm。the students of today will have to how to use the computers .夏尔绍德1.表示“需要”。2.征求“意见”或“意见”，并要求指示。3.主语是第二、第三人称时，表达说话人的坚强意志和决心，有威胁或阻止说话人的作用。We should be strict in all our work。Where shall I wait for you？Shall we start the meeting now？tell him that he shall have the book tomorrow。You shall do as I say。young people should learn how to use computers。在表示“需要”时，可以使用ought ot代替shall。语气更正式。威尔伍尔德1.表示“必然性”。表达“意志”或“意志”。3.询问对方的意向或提出请求。(用于疑问句)Fish will die out of water。every day she would get up at 63336 and light the fire。I will tell you all about it。Well help him if he asks us to。I wont go home now .I promised that I would d