人教版九年級全期末情態(tài)動詞 備課單

1、情態(tài)動詞Learning ObjectivesReview the use of modal verbsTeaching Key and Difficult Points情態(tài)動詞的基本用法 情態(tài)動詞表推測的用法 III.Teaching ProceduresStep 1 Leading in Review what students have learned last class.Step 2 Presentation and Practice情態(tài)動詞的基本特征：有詞義，但不能單獨作謂語，必須和動詞原形一起構(gòu)成謂語無人稱和數(shù)的變化后接動詞原形情態(tài)動詞的基本用法：表能力：can, cant, c

2、ould. couldnt表禁止：mustnt表建議：should, had better表不需要：neednt表請求：will, would, may, can, could, might, shall情態(tài)動詞表推測：表肯定推測：mustcan/couldmaymight表否定推測：cant, may not初中階段常見情態(tài)動詞（組）can(1)表示能力，意為“能，會”?？膳cbe able to 相互轉(zhuǎn)化。Can you speak English？你會講英語嗎？(2)表示請求、允許，意為“可以”。Can I use your bike to the downtown？我能用你的自行車去市區(qū)

3、嗎？2、cant(1)表示能力，意為“不能，不會”。There is something wrong with my eyes. I cant see things around me clearly. 我的眼晴有點毛病。我看不清周圍的東西。(2)表示否定推測，語氣強烈。意為“一定不，不可能”，可能性幾乎為零。The cup cant be Cindys, because she didnt come to the party.這個杯子不可能是辛迪的。因為她沒來參加聚會。(3)表示拒絕對方的請求或者不同意、不允許，意為“不可以”。You cant take the book out of th

4、e library without permission. 未經(jīng)允許，你不能把書帶出圖書館。3、could(1)can的過去式，意為“能，會”，表示過去的能力。My sister could walk when she was 10 months old.我妹妹10個月的時候就會走路了。(2)在疑問句中表示委婉的請求。Could you just tell him to call me back？你能告訴他給我回個電話嗎？(3)表推測，意為“有可能，也許”(20%80%的可能性)，語氣緩和，較委婉。The train to Beijing could be late.去北京的火車可能會晚點。(

5、4)couldnt為could的否定式，意為“不能，不會”。Words couldnt express her feelings at that moment.言語不能表達她那時的感受。4、must(1)表示主觀看法，意為“必須，一定”。We must be patient to others.我們必須對他人有耐心。(2)表示非常有把握的肯定推測(100%的可能性)，意為“一定，肯定”。Mary is not here. She must have already left.瑪麗不在這兒。她肯定已經(jīng)離開了。(3)mustnt為must的否定式，意為“一定不要，禁止”。You mustnt pl

6、ay in the street.你不能在街道上玩耍。5、may(1)表示請求、許可，意為“可以”。May I ask you a question？我可以問你一個問題嗎？(2)意為“有可能，也許”，用于肯定句，表示把握不大的推測。Many students become busy taking notes and they may fail to follow the teacher.許多學生開始忙著做筆記，他們可能會跟不上老師。(3)用于祈使句，表示祝福和祝愿，用法和wish相似。May your dream come true.祝你夢想成真。6、might(1)may的過去式。She w

7、orried that I might be angry.她擔心我會生氣。(2)表示請求、許可，語氣比may更委婉。Might I have a talk with you？我可以和你談談嗎？(3)表推測，意為“有可能，也許”，可能性小于may，語氣緩和，較委婉。She might have gone to the library. She likes reading in the afternoon. 她或許去圖書館了。她下午喜歡看書。7、need(1)表示需要，主要用于否定句和疑問句中。Need I leave now？我需要現(xiàn)在離開嗎？(2)neednt意為“不需要，沒必要”。You n

8、eednt worry about Tom. He isnt a child any more.你不必擔心湯姆。他不再是一個小孩了。should/ought to(1)意為“應該”，表示要求和命令，也可以表示勸告或建議。We should work harder to protect our world.我們應該更加努力地保護我們的世界。(2)表示征詢意見，常用于疑問句中。How much rent(租金)should I pay for this place？我租這個地方應該付多少租金？shouldnt和shall(1)shouldnt意為“不應該”。You shouldnt start e

9、ating first if there are old people at the table.如果餐桌上有老人，你不應該先開始吃飯。(2)shall表示請求或征求對方意見，多用于一、三人稱，構(gòu)成疑問句。Shall we get each of them a card and a gift to say thank you？我們要給他們每人一張卡片和一份禮物來表示感謝嗎？(3)shall表示決心、警告、命令，多用于第二人稱。You shall sit on your seats until all the exam papers are collected.你們必須坐在你們的座位上，等所有試

10、卷收好才能離開。10、will, would,had better和have to(1)will表示詢問、請求，用于疑問句中，常用于第二人稱。Will you come with us? 你能和我們一起去嗎？(2)would表示自愿做或主動提出做什么，表意志、愿望或決心等。Jane said she would not go with Tom, for she didnt have time.簡說她不愿意和湯姆一起去，因為她沒時間。(3)had better意為“最好”。多用于第二人稱，否定形式為had better not。It is raining heavily. You had bet

11、ter stay at home.外面雨下得很大。你最好待在家里。(4)have to意為“不得不”，多表示客觀必要。I have to prepare for the exam. 我不得不為考試做準備。拓展及注意(1)由must引出的一般疑問句，肯定回答常用“Yes, 主語must/have /has to.”；否定回答常用“No, 主語neednt/dont/doesnt have to.”，不能用mustnt回答。(2)表肯定推測的情態(tài)動詞：mustcan/couldmaymight(按語氣強弱)。(3)表示否定推測的情態(tài)動詞有：cantmay not(按語氣強弱)。(4)對由could

12、引出的一般疑問句，回答用can而不用could。Step 3 Classroom Test1. Life _ be easy or difficult; sometimes it depends on how you look at it.2.Could I ride an electric bicycle to school, Mr. Wang?No, you _. Students under the age of 16 arent allowed to ride electric bicycles.3._I take a seat here?No, you cant. Theyre on

13、ly for the old and children.4. Look! People outside are wearing thick coats.The weather _ be very cold.5. _ we leave the library before 5 oclock?No, you neednt. You can stay here until 5：30.6. China is going to use AI to protect the Great Wall.Great! AI is so helpful that people _ use it in their daily life now.7. Parents _ put the things like knives and medicine away in the house to keep children safe.8. You _ take photos here! Look at the si