内容正文:
Unit 3 It must belong to Carla.
诊 断 测 评
词汇填空
1. It’s necessary for all the teachers to a___________ the important meeting.
2. I have many ____________ (建议)about the project.
3. The radio is too ________ (noise); please turn it down.
4. The woman called the ____________ (policeman) and they came at once.
5. They are doing chemistry experiments in the l____________.
ttend
noisy
suggestions
policemen
aboratory
知 识 系 统 呈 现
情态动词表推测
情态动词表示说话人的语气和情态,常带有一定的感情色彩。英语中,must, can (not), may (not), could (not), might (not) 等情态动词可表示对某人或某事的推测。
must 肯定句 有把握的推测 意为“一定” must+动词原形;must+be+现在分词表示对现在的状态或现在正在发生的事情的推测
can 常用于否定句疑问句 语气很肯定 意为“可能”,can’t“不可能” can’t +be doing 对现在发生的动作或现在的状态进行猜测
could 表示某事有可能发生或可能是事实 意为“可能” 还可用于表示客气、委婉、礼貌的请求
may/might 常用于肯定句 may的语气强于might 意为“也许、可能、大概” may/might+动词原形 表示对现在或将来情况的推测
情态动词表推测,可能性:must> can/could> may/might
1. must表示对现在的状态或现在正在发生的事情的推测,后面通常接系动词be的原形。
①You have studied for five hours. _________________________. 你一定累了。
②Our teacher must be marking our exam papers.
2.“may/might/could+动词原形”多用于肯定句,其“推测,判断”的语气不确定。May“也许,可能”;might不表示过去时态,只表示语气较may更弱,意为“或许,大概”。
①I don’t know where she is. ____________________________. 她可能在纽约。
②The guitar might be Jane’s. She plays the guitar.
③It could be Mei’s hair band.
3.“can/could not+动词原形”用于否定句或疑问句中,表示否定推测或判断,有“不可能”之意。用can’t还是用couldn’t,不存在时态差异,只是can’t的语气较couldn’t强。
①There is no light in the room. She can’t be at home now.
②_________________________________.那个人不可能是布莱克先生。He is much taller.
You must be tired.
She may be in New York.
That man can’t be Mr. Black.
【语法强化训练】
1.—Listen! Is that Kate playing the piano in the room?
—No, it ________ be her. She has gone to London with her parents.
A.may not B.needn’t C.mustn’t D.can’t
2.—Susan has bought a large house with a swimming pool.
—It ________ be very expensive. I never even dream about it.
A.must B.might C.can’t D.shouldn’t
3.He ________ i