高一英语情态动词的用法(新人教版).ppt

Grammar,课标人教实验版 高一 Module 3 Unit 1,情态动词用法,Find the sentences in the reading passage that use modal verbs,1. Most ancient festivals would celebrate the end of cold weather. 2. Sometimes celebrate would be held after hunters had caught animals. 3. At that time people would starve if food was difficult to find 4. Some festivals are held to honour the dead or to satisfy the ancestors, who might return either to help or to do harm. 5. If the neighbours do not give any sweets, the children might play a trick on them.,6. People should go to clean graves and light incense in memory of their ancestors. 7.Harvestand Thanksgiving festivals can be very happy events. 8.Some peoplemight win awards for their farm produce. 9. At the Spring Festival inChina, people may give children lucky money in red paper. 10.These carnivals might include parades, dancing in the streets,情态动词有一定的意义，但没有人称和数的变化，不能独立使用，它和后面的动词构成谓语 只作情态动词的 can/could, may/might, ought to， must 可情态可实义的 need, dare/dared 可情态可助动词的 shall/should, will/would 相当于情态动词的 have to, used to,1) can的主要用法是： A. _： eg. The girl can dance very well. B. _： eg. Can the news be true? C. _: eg. Can I sit here?,can 和could：,表示能力,表示推测可能性,表请求或允许,（多用于疑问否定句中）,其他用法：表示请求，命令，惊讶，不相信等。 Can you help me to lift it, please? If you wont keep quiet, you can get out! You cant be serious!,2) could的主要用法是： A. _ _: eg. We all knew that the young man couldnt be a doctor.,could 是can的过去式, 表示过去 的能力,许可和推测,B. could可代替can表示请求, 语气委婉,eg. Could you lend me your bike? Could I use your bike?-Yes， you can,may 和might ： may 常用来表示： A. _ eg. May I come in ? Yes, please. B. _,表示请求、允许;比can正式:,eg. -I believe the man is from England. -But I may be wrong. The guest may arrive this afternoon,表示猜测,答语避免使用may，以免显得 太严肃或太不客气,C. _ eg. May you succeed! May you have a good journey!,表示祝愿;语气较正式:,will和would：,1. I will tell you something important. 我将要告诉你一些重要的事,Will you tell her that Im here? 请您告诉她说我在这儿，好吗?,（助动词）,（情态动词）,will是助动词或是情态动词 用于构成将来时是助动词。 用于表“意志/决心/请求”是情态动词。 would亦同理，只是表过去。,2. _ If you want help, let me know, will you? 如果你需要帮助, 让我知道, 好吗? Would you type this, please? 请打印这个，好吗？ Wont you sit down? 请坐下，好吗？,疑问句中用于第二人称，提出请求,表委婉不是表过去,3. _ Would you help us, please? 请您帮助我们，好吗？ Id go there with you. 我要和你一块到那儿去。 Teacher wouldnt allow it. 老师不会允许这件事。,（表请求）,would比will客气委婉。,（表意愿）,（表许可）,shall和should：,1. Perhaps I shall pay a visit to England this winter.可能今年冬天我会去英国观光。 （构成一般将来时, 助动词）,shall用于构成将来时是助动词。,（表 “决心”，情态动词）,Shall we go by train, Mom? 妈妈，我们乘火车去好吗？ Shall he come in?要他进来吗？,2.用于征求意见,是情态动词,一般用于第一 人称和第三人称,（表 “决心”，情态动词）,Dont worry, you shall get the book. Nothing shall stop us.,2.用于表允诺，决心，警告，命令,或 颁布法令规定等。用于二三人称。,3. eg: You should keep your promise. 你应该遵守诺言。 You should call the police. *表示“按理说”。 Its 8 oclock now, he should be here at any moment. *表埋怨，用于“Shouldnt ?” Shouldnt you be doing your homework now?,should表示义务/建议/劝告，意为 “应该”。,must 的主要用法：,1. _ eg: We must all die. 人总要死的。 2. _ eg: You must get up early. 你必须早起来。,表示必然性。,表示强制/义务。,如：We mustnt waste our time. - May I take this magazine out? - No, y