综合练习1. Jack described his father, who _______ a brave boy many years ago, as a strong-willed manA. would beB... [查看全文]

ix. “can/may/might/could/must/should/need +完成式”表示对过去情况的推测1. “must + 完成式”意为“一定，肯定，想必，准是”,表... [查看全文]

viii. 情态动词表示推测1. 几乎所有的情态动词都可以用来表示推测，只是各自的语气强弱和所使用的场合不同。2. 情态动词表示推测，其可... [查看全文]

vii. need1. 用作情态动词：1）need后接动词原形。I don't think you need take it too seriously.我认为你没有必要太认真。2）n... [查看全文]

vi. dare1. dare作情态动词：1）dare后接动词原形。How dare you say I am unfair?你怎么敢说我不公平？Dare you jump down fr... [查看全文]

1. will的基本用法：1）构成将来时态，表示未来的动作。It looks as if Jack won't be in time for the train.看上去好像... [查看全文]

iv. shall, should, ought to1. shall的基本用法：构成将来时态，单纯表示将来的动作。I shan't be coming back today.我今... [查看全文]

iii. must, have to, have got to1. must的基本用法：1）表示义务、命令或必要，“必须，应当，务必”。I must go now, or I'l... [查看全文]

ii. may, might1. may的基本用法：1）表示许可，可用于正式场合。You may take the book home.你可以把书本带回家。Candidates ma... [查看全文]

i. can, could1. 基本用法1）表示能力Could you follow her talk?她的报告你能听懂吗？The theatre can seat 2,500 people.这... [查看全文]