unit-14--语法grammar.pptVIP

Unit 14 Grammar Modal verbs Should/ought to Students should/ought to respect their teachers. It’s 6 o’clock now. Your father should/ought to be home at any moment It’s strange that he should come so late. Should anyone come， say I am not at home The doctor suggested/ advised ordered that she （should） stay in bed for another week. I should have / ought to have seized the opportunity to be a manager, but I missed it. must / have (got) to Learn compare :do the sentences I ________ find a nice gift for my mother. You _____________ book train tickets at least one week in advance before Spring Festival. It’s getting late. I’m afraid I ____________ go now. Our dormitory gate will be locked in half an hour. tenses questions negatives You’ll __________ do another quiz this Sunday if you fail this one. ______________________ wear school uniform every day? ---Must we hand in the exercise at once? --- Yes, you________. --- (No, you _____________________ ) We must stay home all the day, __________? Passengers __________ get off before the bus comes to a full stop! You ______________ pay for the meal beforehand. Mustn’t I go soon? Usages of “must” You must see this Korean TV play. It’s really interesting. You must go after Mulan. She could be killed Her name is Mabel, if you must know. Why must you always question everything I say? Just when I was busy, my neighbor must come and chat. The phone must ring when I was just about to fell asleep. Modal verbs for conjecture(推测) You must be Jane. I’m Cissy. We used to know each other very well. It can’t be true. I don’t believe it You could borrow a necklace from Jane, who is married to a rich man. You may not know that the necklace I returned is not the one that I had borrowed. Don’t you have a friend who might lend you some money? 对不同时间的推测： 对现在或将来存在的动作或状态的推测： Must/may/could/might + do sth: 对现在正在发生的事情的推测： Must/may/could/might +be doing 对过去发生或已经完成的动作或状态的推测 Must/may/could/might + have done At this moment our