1、Unit 5 What are the shirts made of?Section A Grammar Focus 4c 九年级全一册 人教版Learning GoalsWarming UpGrammarSummaryExercises1 12345通过本课的学习，学生能够：掌握一般现在时的被动语态的构成，被动语态的用法以及与主动语态之间的转化。能用被动语态描述生活中的一些事情Learning GoalsBing Dwen Dwen is made _ cotton and glass and it is made_China.ofinWarming UpPuer tea is produc
2、ed in many different areas in China.PresentationLook at the chart on the textbook.思考：被动语态的结构有什么规律？被动语态句子中的主语是动作的执行者还是承受者？在什么情况下使用被动语态？Are your shirts made of cotton？Yes,they are.And they were made in the US.Whats the model plane made of？Its made of used wood and glass.Where is tea produced in China？
3、Its produced in many different areas.How is tea produced？Tea plants are grown on the sides of mountains.When the leaves are ready,they are picked by hand and then are sent for processing.Active Voice：People grow tea in Hangzhou.Passive Voice：Tea is grown(by people)in Hangzhou.被动语态(一)概念：英语中动词有两种语态：主动
4、语态和被动语态。主动语态表示主语是动作的执行者，被动语态表示主语是动作的承受者。People grow tea in Hangzhou.Tea is grown(by people)in Hangzhou.(二)构成：被动语态由“be及物动词的过去分词”构成，其中be有人称、数和时态的变化。I am often asked the questions by my pupils.You arent allowed to take photos.(三)主动语态变为被动语态的方法第一步:将主动语态的宾语改为被动语态的主语；第二步:将主动语态的谓语改为“be+及物动词的过去分词”结构；第三步:将主动语
5、态的主语改为介词by的宾语，放在 谓语之后(有时可省略)。I am often asked the questions by my pupils.My pupils often ask me questions.Instant TrainingWe usually use computers to search for information on the Internet.（改为被动语态）Usually computers _to search for information on the Internet by us.are used(四)被动语态的用法1.不知道或不必提及动作的执行者Th
6、e first electric railway was opened in 1890.第一条电气铁路是在 1890 年开通的。2.强调动作的执行者The beautiful hat was given by my grandmother.这顶漂亮的帽子是我奶奶给我的。3.强调动作的承受者The TV was invented after the car 电视是在汽车之后发明的。4.动作的执行者是无生命的事物The bridge was washed away by flood.桥被洪水沖走了。5.常用于陈述客观事实，一般用在科技文章或新闻报道中More research needs to b
7、e done,if this problem is to be solved.如果要解决这个问题，仍需做更多的研究工作。6.部分动词短语/句型在习惯上只用于被动语态The road is covered with snow.马路被雪覆盖着。4a.Complete the sentences with the correct forms of the verbs in brackets.1.Children under 18 _(not allow)to watch this show without their parents.2.We _(pay)by the boss on the las
8、t Friday of each month.3.A:What language_(speak)in Germany?B:Most people speak German，but many can speak English,too.4.Most of the earths surface_(cover)by water.5.The classroom_(clean)by the students every day.arent allowed are paidis spoken is covered is cleanedPractice4b.Rewrite the sentences usi
9、ng the passive voice.1Farmers plant the tea on the sides of mountains._2This shop uses the best materials to make dresses._3Careless driving causes many traffic accidents._The tea is planted on the sides of mountains by farmers.The best materials are used to make dresses by this shop.Many traffic ac
10、cidents are caused by careless driving.4The postman brings letters and postcards to peoples homes._5Our family does not use this silver plate very often._Letters and postcards are brought to peoples homes by the postman.This silver plate is not used very often by our family.根据汉语意思完成句子。1.这些饺子是手工制作的。T
11、hese dumplings_ _ _ _.2.在森林里不允许吸烟。Smoking_ _ in the forest.3.他经常被看到帮助别人。He is often _ _help others.4.奥运会每四年举办一次。The Olympic Games_ _every four years.aremade byhand isnt allowed are held seen to4c.Ask five classmates about something they are wearing or have in their schoolbags.The list of words below
12、 may help you.pencil,jacket,sweater,T-shirt,shoes,cap,gloves,ring.A:Whats your pencil made of?B:Its made of wood.A:Where was it made?B:It was made in Shanghai.ProductionExercisesCharity activities _.(plan/to help the poor)Leaflets_.(hand out/to people in the street/volunteers).are planned to help th
13、e poor.are handed out to people in the street by volunteers.完成句子。Toys and CDs_.(sell/to raise money)are sold to raise money把下列主动语态的句子变为被动语态，或把被动语态的句子变为主动语态。1.Tom often helps Jenny when she is in trouble.2.Many trees are planted by students and teachers every year.3.She takes good care of the children.Jenny is often helped by Tom when she is in trouble.Students and teachers plant many trees every year.The children are taken good care of by her.概念被动语态构成主被动转换用法Do you still remember?Summary对应巩固练习见基础题与中考新考法
