译林版九年级上册英语教案 Unit 3 Teenage problems 课时4

1、Unit 3 Teenage problemsGrammar1. Master object clauses introduced by question words.2. The ways of giving suggestions.Step 1 ReviewTranslate some sentences.1. 我经常怀疑是否值得花如此多的时间在家庭作业上。2. 我不能理解为什么他们对我如此严格。Step 2 GrammarWe use a question word to introduce an object clause that expresses a wh-question. T

2、he word order in the clause should be the same as that in a statement.Tip: Whom is an object pronoun. We can use who instead of whom.1. I wonder what I should do.2. Daniel does not know whom he should talk to.3. Sometimes we forget when we should stop.4. I do not understand why they are so strict wi

3、th me.5. I do not know how I should deal with the problem.Step 3 Object clauses.从句来源连接词备注陈述句that口语或非正式文体中常省略一般疑问句if / whether 特殊疑问句连接代词：who; whom; whose; which; what 等。在句中担任主、宾、定或表语。 连接副词：when; where; why; how等。在句中担任状语(1) if或whether连接的宾语从句，由一般疑问句转化而来，常放在ask，see，know，wonder, find out等动词/组后面

4、。常可换用,口语中多用if。 The old woman asked me if I knew the way to the hospital. Is Peter there? Hold on, please. Ill see if I can find him for you. Nobody knows whether/if it will rain tomorrow. He wondered if/whether he had given correct answers. Id like to find out whether I am blacklisted. (2) 连接代词和连接副词

5、引导的宾语从句是由特殊疑问句变化而来，要用陈述句语序。常放在：see, say, tell, ask, answer, know, decide, find out, imagine, suggest, wonder, discover, understand, inform, advise等动词/组后面。 They havent decided who will go there. I want to know whom/who you are waiting for?Tell me what book you like to read. Tell me which book yo

6、u like to read best of the three. Have the police discovered whose the special shoes are? I asked him why he smiled.Can you tell me where you are？Do you know when we will hold the sports meeting?I cant imagine how the thief entered my room.主句是过去的某种时态，从句一定要用过去的某种时态。主句时态从句时态一般现在时一般过去时一般过去时过去完成时现在进行时过去

7、进行时一般将来时过去将来时现在完成时过去完成时过去进行时过去进行时e.g. We didnt know why she had missed the flight.He told me that he was watching a cartoon film at 10 oclock this morning.注意：宾语从句表述的是客观真理、自然现象等时，从句都要用一般现在时。e.g. He said that light travels much faster than sound.Step 4 Summary宾语从句三要素：连接词：that（陈述句） if/whether（一般疑问句） wh

8、o; whom; whose; which; what when; where; why; how(特殊疑问句)时态：主句为一般现在时，从句可以是任何时态。主句为一般过去时，从句进行相应的变化。客观真理，自然现象等不变语序：陈述语序Step 5 Giving suggestionsWe give suggestions politely using structures such as Why not, Why dont you, What/ How about, Lets and Shall weTip:We also use perhaps to give suggestions. Per

9、haps you should manage your time better.e.g. 1. Why not eat less and exercise more?2. Why dont you let your parents know you need them?3. What/How about choosing your hobby according to the time you have?4. Lets write a letter to Mr Sigmund Friend.5. Shall we have a meeting about this?我们可以用Why not?

10、What/How about? Lets和Shall we等提建议。Perhaps 也可用于建议。e.g. Perhaps you can park over there.(1) 句型Why not?是Why dont you ?的缩略形式，“为什么不？”“你为什么不?”,后面跟动词原形。e.g. Why not donate your pocket money to charity?你为什么不将零用钱捐给慈善组织？=Why dont you donate your pocket money to charity?(2) 句型What/How about ? “怎么样？” “如何？”，后面跟名词，代词或者动名词。e.g. What/How about having a cup of coffee ?喝杯咖啡怎么样？ (3) 句型le