Unit 2 Grammar 课件 2026-2027学年译林版英语九年级上册

该初中英语课件聚焦if/whether及连接代词、副词引导的宾语从句，通过Ron与Jennifer的对话导入，以Amy与妈妈的交流呈现if/whether从句用法，再过渡到特殊疑问词引导的从句，构建由易到难的学习支架。 其亮点在于结合青少年问题创设真实语境，通过“三步变形法”解析语序规则，提升学生语言运用能力和逻辑思维品质。练习设计涵盖填空、对话及书信写作，助力学生巩固语法并学会表达，教师可借助清晰结构高效开展教学。

Unit 2 Teenage problems Grammar 23021 能掌握if或whether引导的宾语从句。 能掌握连接代词和连接副词引导的宾语从句。 学习目标 23021 Lead in 23021 Presentation Read the texts below and pay attention to the object clauses introduced by if or whether. Amy often argues with her best friend about silly little things. She wonders if this is normal, so she talks to her mum about it. She asks whether she has any advice. Her mum tells her to talk to her friend about the situation. Amy wants to improve her friendship, but she isn’t sure if talking about it will help. 新课讲授 23021 We use if or whether to introduce an object clause that expresses a yes/no question. Such an object clause often follows verbs such as ask, see, wonder and find out. The word order in the clause should be the same as that in a statement. Is this normal? She wonders if this is normal. She wonders if is this normal. √ × We often use whether instead of if in formal situations. The teacher wanted to know whether the students were under a lot of stress. 23021 Let’s learn 23021 if/whether 引导的宾语从句 定义 引导词 if/whether 语序 if或whether引导的宾语从句 当我们需要转述一个一般疑问句（即可以用Yes/No回答的问句）时，就需要用whether或if来引导宾语从句。 whether/if表示“是否”，用于引出一个需要确认或选择的疑问内容。 whether或if在从句中不充当任何成分，只起连接作用。 定义 23021 语序 whether或if引导的宾语从句，必须用陈述句语序，即“主语 + 谓语动词”。 疑问句： Will she come? 她会来吗？ 宾语从句： I don’t know whether/if she will come. 我不知道她是否会来。 23021 引导词：if/whether whether/if引导的宾语从句 whether与if通常可以互换，且常跟在ask、know、find out、wonder、decide、see、doubt、unsure、uncertain等之后引导宾语从句，引出两个或以上的可能性之一； whether/if在从句中也不充当任何成分，只起连接作用。 e.g. I wonder if/whether it will rain. 我想知道是否会下雨。 I doubt whether/if he is telling the truth. 我怀疑他说的是否是真话。 He was unsure whether/if he should tell her the truth. 他不确定是否应该告诉她真相。 23021 拓展：宾语从句只用whether不用if的情况。 1. 在介词后面 e.g. We are worried about whether it will rain tomorrow. 2. 在动词不定式前 He can't decide whether to go to Canada. 3. 当与or或or not连用时 I don't know whether he's free or not. She asks me whether I am from Yancheng or Nanjing. 4. 宾语从句提前时 Whether this is true or not, I can't say. 23021 Amy is writing a diary entry about her studies. Complete it below using that or if/whether. I just had my History exam, and I don’t know (1) ______________ I passed it. I know (2) ______________ I tried my best, but I’m not sure (3) ______________ that’s good enough. I’ll have to wait to find out. I really hope (4) ______________ I do well in school this year. That’s why I work so hard every day. I’m not sure (5) ______________ I need to do more. I wonder (6) ______________ it would improve my grades or just make me more stressed. From the bottom of my heart, I just want to succeed and feel proud of myself. that if/whether if/whether that Practice if/whether whether 23021 Talk with your partner about your learning problems, using object clauses introduced by if or whether. 23021 Presentation Read the texts below and pay attention to the object clauses introduced by question words. Then summarize their usages. Teenagers often have problems with their parents. They do not always understand why their parents have so many rules. Although this is a common problem, many teenagers do not know what they should. They are not sure how they can have an honest dialogue with their parents. They do not know who they can ask for advice. 23021 Let’s learn 23021 特殊疑问词引导的宾语从句 定义 引导词 三步变形法 易错点与难点 语序 连接代词和连接副词引导的宾语从句 定义 特殊疑问词引导的宾语从句(Object clauses with Wh-words)，这是一个将特殊疑问句转述为宾语从句的语法结构，此时用于转述的引导词要用特殊疑问词。 例：特殊疑问句： Where does she live? 她住在哪里？ 宾语从句： I know where she lives. 我知道她住在哪里。 23021 语序 特殊疑问词引导的宾语从句，必须用陈述句语序，即“主语 + 谓语动词”，绝不能是疑问句的倒装语序。 特殊疑问句： Whose pencil is this? 这是谁的铅笔？ 宾语从句： I know whose pencil this is. 我知道这只铅笔是谁的。 23021 引导词 当我们需要转述一个特殊疑问句时，就需要用特殊疑问词来引导宾语从句。 特殊疑问词包括疑问代词（what、which、who、whose）和疑问副词（when、how、where、why）。 e.g. He asked what I bought. 他问我买了什么。 She wondered where they would go. 她想知道他们去哪儿了。 He wondered why light travels faster than sound. 他好奇为什么光的传播速度比声音快。 23021 特殊疑问词 在宾语种充当成分 what 主语，宾语，表语 who 主语，宾语 whom 宾语（正式） whose 定语（修饰名词） which 主语，宾语，定语 where 地点状语 when 时间状语 why 原因状语 how 方式状语 23021 三步变形法 保留特殊疑问词：保持疑问词不变。 改为陈述语序：将疑问句的倒装语序改回的陈述语序。 整体放入主句：将调整后的从句放在主句的及物动词或介词之后。 e.g. 特殊疑问句：Where does she live? 她住在哪里？ 步骤1：保留where 步骤2：does she live → she lives(陈述语序) 步骤3：放入I don’t know之后 23021 这些动词后面常接由疑问词引导的宾语从句： 询问类：ask, wonder, want to know, inquire 知晓类：know, understand, remember, forget 告知类：tell, show, explain, teach, advise 决定/思考类：decide, find out, discuss, think about, consider 常见主句动词 23021 当主从句主语一致，且从句表达一个未来的或一般的动作时，可以简化为“疑问词+ to do”结构 I don’t know what I should do. = I don’t know what to do. 双重疑问的避免：主句已经是疑问句时，要特别注意从句的语序。 Do you know where did he go? Do you know where he went? 易错点和难点 23021 We use a question word to introduce an object clause that expresses a wh- question. The word order in the clause introduced by a question word should be _____________ (different from, the same as) that in a wh-question. different from Practice 23021 The Class 1, Grade 9 students are talking about their problems. Complete each object clause below with the correct question word. Kitty Peter My parents often stick to their own ideas. I don't know _____________ I can communicate with them I need someone to share my worries with. I wonder _____________ I should go to for help. how who/whom 23021 I’ve tried my best, but I don't understand _____________ I still get low marks. My parents often come home very late. Sometimes I don't know _____________ I can talk to them. Amy Sandy why when Sometimes I'm careless. I wonder _____________ I can be more careful. I often have difficulty in expressing myself. Who can tell me _____________ I should do? Paul Suzy how what 23021 Daniel has some questions. Rewrite his questions by using object clauses introduced by if/whether or a question word. 1 Why did I argue with my friends yesterday? Can I explain ______________________________________________? 2 Can Millie help me get along well with my friends? I wonder __________________________________________________. 3 Where can I find useful articles on friendship? I want to know _____________________________________________. I think I need to learn more about friendship. why I argued with my friends yesterday if/whether Millie can help me get along well with my friends Where I can find useful articles on friendship 23021 4 How much sleep do we need every day? I wonder ________________________________________________. 5 Do I need to buy an English dictionary? I am not sure _____________________________________________. 6 Do the students need to exercise every day? Can you tell me __________________________________________? 7 What would life be like without science? I cannot imagine __________________________________________. how much sleep we need every day if/whether I need to buy an English dictionary if/whether the students need to exercise every day what life would be like without science 23021 Sandy: Do you ever feel lonely, Millie? I know (1) ______________ I often feel that way. But I’m not sure (2) ______________ that’s normal. Millie: Yes, sometimes I feel lonely too. Sandy: Do you have any advice? I’m never sure (3) ______________ I should do about it. Millie: I usually talk to my parents. That helps me. But I don’t know (4) ______________ it will work for you. Sandy: I’ll try, but my parents are always busy. So I don’t know (5) ______________ else I can talk to. Millie: I see your problem. Have you ever heard of Mr Friend? He’s a youth worker. He helps teenagers with their problems. Maybe you can write to him. Sandy: That sounds like a great idea. Now I know (6) ______________ I can find help. Thanks, Millie. Sandy and Millie are talking about their problems. Complete their conversation with that, if/whether or a question word. that if/whether what if/whether who/whom where 23021 Write a short letter to Mr Friend to talk about one of your problems, using object clauses introduced by that, if/whether and question words. 23021 当堂检测 一、用 that，if 或whether 填空。 1. — John, would you like to go camping with me this afternoon? — I'd like to, but I'm not sure _________ my parents will agree. 2. I'm not good at English, and I wonder _________ or not I can pass the English test. 3. I believe _________ I have made a wise decision, so I won't change my mind. 4. — I hope _________ all my dreams can come true. — If you try your best, they will surely be realized. 5. — May I ask _________ you will come to our party this weekend? — Yes, I'll be glad to. Thanks for your invitation. if/whether whether that that if/whether 23021 二、用所给的特殊疑问词填空，每词只用一次。 1. Do you know ________ is the first Chinese astronaut? 2. Please tell me ________ she has gone. 3. Let's find out ________ is on tonight. 4. He asked me ________ I could arrive here. 5. I wonder ________ he worked out the problem. 6. We all want to know ________ is suitable for him best. How when where what who which who where what when which how 23021 ✍ Review the grammar we learnt today. ✍ Preview Integration on pages 29-32. Homework 23021 Lavf57.83.100 $