Teenagers should be allowed to choose their own clothes. Unit 7 Teenagers should be allowed to choose their own clothes. Section A（1a-2d） 人教九年级英语

Free talk 课前预习 How old is a teenager? What should /shouldn't you be allowed to do as teenagers at school? A: We should be allowed to (do)... B: We shouldn’t be allowed to ... Middle school students daily behavior standard 中学生日常行为规范

课前预习 School rules Middle school students daily behavior standard Don’t arrive late for school. be not allowed to do = Students are not allowed to arrive late for school.

课前预习 School rules Don’t eat in the classroom. = Students should be not allowed to eat in the classroom.

课前预习 School rules Don’t run in the hallways. = Students are not allowed to run in the hallways.

课前预习 School rules Don’t listen to music in the classroom. = Students are not allowed to listen to music in the classroom.

课前预习 Don’t fight with others. = Students are not allowed to fight

课前预习 Don’t cheat /tʃi:t /. = Students are not allowed to cheat.

课前预习 Rules for teenagers Boys are not allowed to have long hair. Teenagers should not be allowed to get ears pierced.

课前预习 Rules for teenagers Teenagers should not be allowed to watch TV too long.

课前预习 Rules for teenagers Do you agree? I agree/disagree, because teenagers should /shouldn’t be allowed to...

课文解析 allow V.“允许”，常用结构如下： (1)allow sb. to do sth. 允许某人做某事 例：The policeman allowed him to go home. (2 ) allow doing sth. 允许做某事 例： We don’t allow using phones at school. (3) sb be allowed to do sth.某人被允许做某事 例： You are not allowed to speak aloud in the library.

知识拓展 复习被动语态 被动语态的构成： 主语 + be + 动词的.过去分词 常见的几种时态的被动语态的句型。 一般现在时：主语 + be ( am / is / are ) +动词的 过去分词 + ------. 一般过去时：主语 + was / were + 动词的过去分词 + ------. 一般将来时：主语 + will / shall + be +动词的 过去分词 + ------. 含情态动词时其构成：主语+情态动词（not） + be + 动词的.过去分词. should \may\must be allowed to do sth. should \may\must not be allowed to do sth.

知识拓展 should be allowed to do sth. 不应该被允许做某事 应该被允许做某事 shouldn’t be allowed to do sth. No way ! 没门 No way 意为“不可能；决不；不行；没门”， 多用于口语中，表示某人不可能做某事或某事不可能发生。 例：----Can I leave now? 我可以现在离开吗？ ----No way! 不行！

“同意”与“不同意”的常用短语 知识拓展 “同意” I agree; I can’t agree more; I approve; You are right; I have the same idea with you; of course; I think so. “不同意” I disagree ; I don’t think so; no way.

课文解析 1. I don’t think sixteen-year-olds should be allowed to drive. 我认为十六岁以下的孩子不应该允许开车。 (1)含情态动词的被动语态 含情态动词的被动语态结构：情态动词（should, must, may , can, could等）+be+及物动词的过去分词。 例：We should be allowed to play basketball on weekends. How many magazines can be borrowed from the library every week? The room must be cleaned every day. You may be asked to do some housework.

课文解析 (2)sixteen-year-olds在此句中用作名词，意为“16岁的青少年”。“基数词-量词（单数）-形容词”构成的词通常作形容词，作前置定语，而且这一整体是一个词，后加s表示一类人或事物。 例：Fifty-year-olds should retire. These students who are fifteen-year-olds are going camping this weekends.

课文解析 （3）本句中“I don’t think+（that）宾语从句”表示“我认为……不……”。若宾语从句跟在think, believe, suppose, expect等表示“想，认为”的动词之后，而且主句的主语又是第一人称时，在否定从句时，句子的否定体现在主句上，这种现象叫否定转移。 例：I don’t think it’s a good idea. I don’t think (that) he will be late for school tomorrow.

课文解析 2. 由man 和woman 等组成的复合名词，两个词通常都要变复数。 例如：man doctor → men doctors woman teacher → women teachers 3. 以两个名词构成的复合名词(前面的名词为man或woman除外)，一般把后面的名词变复数。 例如：boy friend→ boy friends apple tree ---- apple trees

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