潘红霞九年级英语unit7第一课时课件.ppt
Unit 7 Teenagers should be allowed to choose their own clothes.农一师六团中学：潘红霞农一师六团中学：潘红霞Period 1:Section A (1a -1c)被动语态被动语态：Many people speak English.（主动语态（主动语态）English is spoken by many people.（被动语态（被动语态）被动语态的构成被动语态的构成:被动语态由被动语态由 助动词助动词be+be+及物动词的过去分词及物动词的过去分词 构成构成. .be be 动词有人称动词有人称, ,数数, ,时态的变化时态的变化. .如果有必要强调动作的执行者如果有必要强调动作的执行者, ,用用byby引出引出. .如果不强调如果不强调, ,很多时候可不用很多时候可不用byby介词短语介词短语.We clean the windows every day.The windows are cleaned every day (by us).My sister washed my clothes this morning.My clothes were washed by my sister this morning.Explanation 常用的被动语态常用的被动语态：1.一般现在时的被动语态：am/is/are+过去分词2.一般过去时：was/were+过去分词3.含有情态动词的被动语态： 情态动词+be+过去分词4.一般将来时的被动语态：will +be+过去分词 将下面的句子改成被动语态将下面的句子改成被动语态1. We must water the flowers once a week.2. He finishes his homework every day.3. She saw the movie last night.4. Teachers dont allow us to chew gum in class.The flowers are watered （by us） once a week.His homework is finished （by him）every day .The movie was seen by her last night.We arent allowed to chew gum in class . Section AWarming up1a-1cWhat rules do you have in your school?Do you agree with them?Why or why not?Do you agree? Or disagree? 1. Students should not be allowed to take mobile phones to school. 2. Students should be allowed to do homework with friends. 3. Students should not be allowed to go out at night.4. Students should not be allowed to take part-time jobs. Listening (1b: P18)1.Anna can go to the mall with John. 2.Anna wants to get her ears pierced. 3.Anna is allowed to choose her own clothes. TFTOral Practice (1c: P18)Sample dialogue 1:A: I think teenagers should be allowed to go out with their friends.B: I agree. They are old enough. They can look after themselves well.Sample dialogue 2:A: I dont think twelve-year-olds should be allowed to get their ears pierced.B: I agree. Its too silly to wear earrings in the school.Sample dialogue 3:A: I think students should be allowed to do homework with their friends.B: I disagree. They talk instead of doing homework.Exercises in class:一、用所给单词的适当形式填空一、用所给单词的适当形式填空1.Many trees must (plant).2.The bridge (build) many years ago.3.A knife (use) for cutting things.二、选择题二、选择题（ ）1.Teenagers should to make their own decisions. A. allow B. allow C. allows D. be allowed（ ）2.The books may for two weeks. A. be kept B. be borrowed C. keep D. borrowbe plantedwas builtis used D AHomework:1.Copy Grammar Focus and read it five times to memorize .2.Write a list of class rules in English in a group.
