Unit 7Teenagers should be allowed to choose their own clothes重点语法精讲课件人教版英语九年级.pptx

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1、Teenagers should be allowed to choose their own clothes,重点语法精讲,Unit 7,CONTENTS,情态动词被动语态,01,情态动词表义务,02,表达同意和不同意的常考点,03,情态动词被动语态,Tables can be made of stones. 桌子可由石头制造。,肯定句结构：情态动词+be+过去分词,I believe that something can not be bought by money.我相信有些东西是用钱买不到的。,否定句结构：情态动词+not+be+过去分词,情态动词被动语态,Can tables be

2、made of stones? 桌子能用石头制造吗？,一般疑问句结构：情态动词+主语+be+过去分词+.?,These young trees should be watered every day.（对划线部分提问）,特殊疑问句结构：疑问词+情态动词（+主语）+be+及物动词的过去分词（+by+宾语）？,How often should these young trees be watered?,情态动词被动语态的练习,1.选词填空。To make our city more beautiful, rubbish _ into the water. (mustnt be thrown/mus

3、tnt throw),2.按要求改写句子。Everyone can hear the wonderful speech in the hall.（改为被动语态）The wonderful speech can _ _ by everyone in the hall.,4.按要求改写句子。People should take good care of the aged everywhere.（改为被动语态）The aged should _ _ good care _ everywhere.,3.按要求改写句子。We ought to keep the room clean. （改为被动语态）T

4、he room _ _ _ kept clean.,mustnt be thrown,be,heard,ought,to,be,be,taken,of,情态动词表义务（must/mustnt/should/shouldnt/ought to/ought not to),All passengers must wear seat belts.所有乘客必须系安全带。,1. must可表义务，常表示“必须”。,-Must we wear seat belts?我们必须系安全带吗？-Yes, you must.是的，必须。-No, you neednt. / No, you dont have to.

5、不，不必。,2.关于must 的简短回答：否定回答时不用mustnt。而neednt/dont have to,We mustnt buy fur products.我们不应当购买皮草制品。,3.mustnt 也可表义务，表示“禁止”，也可意译为“不应当；不许”。,情态动词表义务（must/mustnt/should/shouldnt/ought to/ought not to),You should /ought to apologize to him.,You should not (=shouldnt) drive after drinking.,You ought not to dri

6、ve after drinking.,should为情态动词，意为“应该；应当”，后接动词原形，无人称和数的变化，常可与ought to互换。可用于表达义务或责任，否定形式shouldnt（should not），常可与oughtnt to（ought not to）互换，意为“不应当；不应该”。,情态动词表义务（must/mustnt/should/shouldnt/ought to/ought not to),1.选择适当的单词填空。We _ drive after drinking wine. (must/mustnt),mustnt,2.选词填空。They _ treat their

7、mother in this disrespectful (不尊重的) way. (should/shouldnt),shouldnt,3.根据句子意思填入恰当的情态动词。By law, seat belts _ be worn by all passengers.,must/should,4.根据中文意思补全句子。你的穿着应该整洁漂亮，而且必须非常合身。What you wear _ be stylish and clean, and _ definitely fit well.,should,must,表达同意和不同意的常考点,Shall we go to London for the s

8、ummer hoilday? .Its one of the most beautiful cities.A.Sounds great B.I dont like it C.You are kidding D.Youre welcome,A,表达个人观点，我们可以用以下句式或短语：1. I (dont) think/suppose/believe/hope.2. in my opinion/mind/view3. Personally, I think,表达赞同:,表达同意和不同意的常考点,Id like to invite you to my birthday party tonight,M

9、r Lee.,.,A.Oh no,Lets not. B.Im very sorry,but I have other plans.C.Id rather stay at home. D.Oh no,Thatll be too much trouble,B,表达不赞同:,表达同意和不同意的常考点,1.翻译句子。-Jane，你今天下午能和我一起去游泳吗？-是的，我很乐意去，但是我得先做家务。-Could you go swimming with me this afternoon, Jane?-Yes, _ _ _, but I have to do the housework first.,Id,like/love,to,2.完成句子。-Smith教授的课非常有意思。-我非常同意。- Prof. Smiths lecture is really interesting.-I couldnt _ _.,agree,more,3.翻译句子。我相信人们是不会在短期内改变生活习惯的。(不限一词)I _ people _ _ change their lifestyle in a short time.,dont,believe,