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1、Do you think teenagers should be allowed to use the Internet?,Warming up,Do you think teenagers should be allowed to use mobile phones?,Warming up,Do you think teenagers should be allowed to study with friends after class?,Warming up,Do you think teenagers should be allowed to drink or smoke?,Warmin
2、g up,Do you think teenagers should be allowed to choose their own clothes?,Warming up,Grammar Focous,1.You must clean your bedroom every day. Your bedroom must be cleaned every day . 2.Parents should encourage teenagers to do social work for their community. Teenagers_.,should be encouraged to do so
3、cial work for their community,Rewrite the sentences according to the example.,4a,3.Can Lucy do her homework tomorrow instead? Can _? 4.Do you think we must keep teenagers away from the Internet? Do you think teenagers_? 5.Parents should give teenagers chances to make their own decisions. Teenagers _
4、.,Lucys homework be done by her tomorrow instead,must be kept away from the Internet,should be given chances to make their own decisions,Should teenagers _(ask) to move out when they start working? In many Western countries, teenagers_(allow) to move out at eighteen. Their parents believe that they
5、should _(educate) to take care of themselves from a young age. This way, when they _(start) working they can manage their own lives. However, in most Asian societies, it is not common for teenagers to _(move) out. Chinese parents believe that it is better for children to live with parents who can _(
6、take) care of them. But the young should then look after their parents as they get older. That is why many Chinese adults _(continue) to live with their parents.,be asked,are allowed,be educated,start,move,take,continue,Fill in the blanks with the correct forms of the words in brackets.,4b,A: Member
7、s should be allowed to use dictionaries. B: Yes, but they should only use English-English dictionaries.,You and your friend are starting an English club. Make a list of rules about what should and should not be allowed.,4c,1.educate 教育 educate sb. (to do sth.) 教育某人做 【拓展】education n. 教育 2.make ones o
8、wn decision =decide on ones own=decide for oneself 自己做决定 e.g.:I can make my own decision/decide for myself and manage my own life.,Language Points,语法拓展,含有情态动词should 的被动语态的结构：should +be+及物动词的过去分词 一、肯定句式：主语+情态动词+be+动词的过去分词+（by+宾语） e.g.:Your homework should be finished by yourself.,被动语态（三）含情态动词的被动语态,二、
9、否定句式：主语+情态动词+not+be+动词的过去分词+（by+宾语） e.g.:Teenagers should not be allowed to go out at night. 三、一般疑问句结构为：情态动词+sb./sth.+be+动词的过去分词+（by+宾语）？ 回答：Yes,主语+should./No,主语+shouldnt. e.g.:Should these young trees be watered every day? Yes,they should./No,they shouldnt.,四、特殊疑问句结构为：主语+疑问词+一般疑问句？ e.g.:What should
10、 students be allowed to do? 【注意】含有双宾语的主动句变为被动句时，把代表人的间接宾语变为被动句的主语，把直接宾语作为被动句的宾语；若把主动句的直接宾语变为被动句的主语，间接宾语前必须加介词for或to。 e.g.:My aunt gave me a book on my birthday. I was given a book on my birthday by my aunt. A book was given to me on my birthday by my aunt.,当主动句中的谓语动词是feel,hear,make,see,watch,look at
11、,notice等时，其后作宾语补足语的动词不定式要省略to，但变为被动句时，要补上动词不定式符合 to。 e.g.:We heard Mary sing a song at the party. Mary was heard to sing a song at the party by us. 含有短语动词的被动句，其短语中的介词或副词不能丢掉。 e.g.:A tall building was put up in my hometown.,一、单项选择。 ( )1.Its difficult for children to cross the river to school. I think
12、 a bridge _ over the river. A.should be built B.will build C.is built D.was built ( )2.Teenagers _ allowed to drive. A.should not be B.should be not C.not should be D.shouldnt,A,A,Exercise,( )3.A computer _ me by my mother last week. A.was given B.was given to C.was giving D.is giving ( )4.He _ stay
13、 outside last night. A.was seen B.is seen C.was seen to D.saw ( )5.Do you know Earth Day? Sure.It _ in 1970 to tell us to protect our planet. A.sets up B.set up C.was set D.was set up,B,C,D,二、句型转换。 1.The lights should be turned off before you leave the classroom.(改为主动语态) You _ _ off the lights befor
14、e you leave the classroom. 2.I cant hear her sing.(改为被动语态) She cant _ _ _ sing. 3.Should we throw waste paper everywhere?(改为被动语态) _ waste paper _ _ everywhere? 4.Books should be put into the desk.(对画线部分提问) _ _ books _ _?,should turn,be heard to,Should be thrown,Where should be put,Recite Grammar Focus and translate them.,Homework,Thank you！,