情态动词以及情态动词被动语态

1、关于情态动词及情态动词的被动语态第一张，PPT共十四页，创作于2022年6月情态动词有哪些?can /may/must/ will / shall / should / ought toneed /darehad better/ would rather, used to / have to / be able to第二张，PPT共十四页，创作于2022年6月2情态动词的含义序号原形过去式主要含义1cancould2maymight3mustmusthad to4needneeded5daredared6willwould7shallshould1.能力2.请求/准许3.可能性1.请求/准许2

2、.可能性 *3.祝愿1.义务(必须); 2.猜测(肯定)需要敢愿意1.征求意见 2“应该”(should)第三张，PPT共十四页，创作于2022年6月3序号原形过去式主要用法8be able towas/were able to9have tohad to10ought toought to11used to12had better13would rather“能够”（能力）“不得不/必须”“应该”“ 过去（常常）”“最好”“ 宁愿”情态动词的含义第四张，PPT共十四页，创作于2022年6月4 can/could be done must be done should be done may/

3、might be done had better be done have to be done含情态动词的被动语态： 情态动词+be +PP第五张，PPT共十四页，创作于2022年6月否定式：情态动词+not + be + p.p can/could not be done must not be done should not be done may/might not be done had better not be done have not to be done第六张，PPT共十四页，创作于2022年6月疑问式：情态动词+ 主语+ be + p.p can/could +主语 +b

4、e done must +主语 + be done should +主语 + be done may/might +主语 + be done had +主语 + better be done have +主语 + to be done第七张，PPT共十四页，创作于2022年6月1.I can finish the work. The work can be finished by me. Can the work be finished by you?2.We should plant many more trees. Many more trees should be planted by

5、us. Should many more trees be planted by us?第八张，PPT共十四页，创作于2022年6月Teenagers should be allowed by parents to drive the car .3.Parents should allow teenagers to drive the car.Should teenagers be allowed by parents to drive the car ?4.You can pass the exam if you study hard.The exam can be passed (by y

6、ou) if you study hard.Can the exam be passed (by you) if you study hard?第九张，PPT共十四页，创作于2022年6月water(浇水)Trees must be watered by them every day.They must water trees every day.Must trees be watered by them every day?第十张，PPT共十四页，创作于2022年6月People may catch fish in the river.Fish may be caught in the ri

7、ver (by people).Practice :第十一张，PPT共十四页，创作于2022年6月1.My mother can cook delicious meals. Delicious meals can be cooked by my mother.2. Students will use these textbooks next term.These textbooks will be used next term by students .3. You should water trees often . Trees should be watered by you often

8、.4.You must not plant trees in very dry earth .Trees must not be planted by you in very dry earth. 第十二张，PPT共十四页，创作于2022年6月3. Sixteen-year-olds should be allowed to drive.(先改为否定句，再改一般疑问句) Should sixteen-year-olds be allowed to drive?Sixteen-year-olds shouldnt be allowed to drive.Yes they should./ No, they shouldnt.4. I think the work