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(共24张PPT)
Unit 8 Let’s Communciate!
SectionA (Grammar Focus3a -3c）
人教版 八年级上册
04
03
01
02
通过语法表格，引导学生逐步全面掌握零条件句和第一条件句；并且能够在语境中运用。
学习能力
学生观察，培养其独立思考和发散性性思维；通过语法表格，引导学生逐步全面掌握零条件句和第一条件句；并且能够在语境中运用。
思维品质
引导学生观察与翻译，培养其独立思考和发散性性思维，变被动学习为主动学习。
文化意识
学生能够掌握并准确运用if条件句完成句子匹配练习，在具体沟通场景中正确关联“假设情境”与“对应结果/建议”，提升语法逻辑的连贯性和运用熟练度。
语言能力
Learning Objectives
Lead-in
Read the sentences.
Find more sentences with if-clauses in Section A.
If you want to solve the problem, a face-to-face talk usually works the best.
Texting can make things worse if you’re not careful with your words.
If the rehearsal ends at 7:00 p.m., I’ll pick you up at 7:15 p.m.
If you stay calm and say sorry, it will help.
If I go there, I will try all the delicious local food.
3a
Presentation
连词if "如果，假如"，它引导的句子表示某事发生所需的条件，从句是主句动作发生的前提或条件
定义
If you want to solve the problem, a face-to-face talk usually works the best.
Texting can make things worse if you're not careful with your words.
If the rehearsal ends at 7:00 p.m., I'll pick you up at 7:15 p.m.
If you stay calm and say sorry, it will help.
If I go there, I will try all the delicious local food.
连词if "如果，假如"，它引导的句子表示某事发生所需的条件，从句是主句动作发生的前提或条件
定义
3a. Read the sentences. Find more sentences with if-clauses in Section A.
Presentation
Part 3. Read the sentences. Find more sentences with if-clauses in Section A.
3a
What are the tenses of the main clause(主句) and the subordinate clause(从句)
If you want to solve the problem, a face-to-face talk usually works the best.
Texting can make things worse if you’re not careful with your words.
If the rehearsal ends at 7:00 p.m., I’ll pick you up at 7:15 p.m.
If you stay calm and say sorry, it will help.
If I go there, I will try all the delicious local food.
if 引导的是从句
闯关
第一关
第三关
第四关
第二关
第六关
战斗力：0
帮助哪吒通关
If it snows , we will make snowmen .
We will make snowmen if it snows.
如何划分主从句
找 if, 划从句，if后面是从句，if可放主句前，也可放其后。
tips
从句
从句
If you want to solve the problem, a face-to-face talk usually works the best.
Texting can make things worse if you’re not careful with your words.
If the rehearsal ends at 7:00 p.m., I’ll pick you up at 7:15 p.m.
If you stay calm and say sorry, it will help.
If I go there, I will try all the delicious local food.
一般现在时
一般现在时
带情态动词的一般现在时
一般现在时
一般现在时
一般将来时
一般现在时
一般将来时
一般现在时
一般将来时
If the rehearsal ends at 7:00 p.m., I’ll pick you up at 7:15 p.m.
If you stay calm and say sorry, it will help.
If I go there, I will try all the delicious local food.
一般现在时
一般将来时
一般现在时
一般将来时
一般现在时
一般将来时
结构1：主 将 从现
主句 ，从句一般现在时
一般将来时
主从句的构成有什么特点？
第一关
第三关
第四关
第二关
第六关
第五关
帮助哪吒通关
go swimming
go to the zoo
fly kites
If it’s sunny in summer, they will
Texting can make things worse if you’re not careful with your words.
带情态动词的一般现在时
一般现在时
结构2：主情从现
主从句的构成有什么特点？
主句有 ，从句一般现在时
情态动词
第一关
第三关
第四关
第二关
第六关
帮助哪吒通关
practice 1
1. If you up late, you can take a taxi.
A. get B. got C. getting D. gets
2. If he to pass the exam, he must be careful.
A. want B. wants C. will want D. wanted
3. She should see a doctor if she a cold.
A. had B. has C. have D. will have
第一关
第三关
第四关
第二关
第六关
帮助哪吒通关
If you go to London, visit the Science Museum.
If you want to be a writer, read more books.
主句 ,从句一般现在时
结构3：主 祈 从现
主句
主句
从句
从句
主从句的构成有什么特点？
祈使句（V.原）
第一关
第三关
第四关
第二关
第六关
帮助哪吒通关
1. ______ hard if you want to pass the exam,
A. Work B. To work C. Working D. Worked
2. If he ____ back, tell me.
A. comes B. will come C. come D. may come
3. If you _____ Beijing tomorrow, call me.
A. will reach B. reached C. reach D. is reaching
practice 2
1. If we have a face-to-face meeting,
2. If I have good news,
3. If you need to leave,
4. If you can finish your work early today,
5. If the old man has difficulties in hearing,
6. If you can't reach her by phone,
Match the two parts to make sentences.
A. try texting.
B. we'll understand each other better.
C. you can write things down for him.
D. I'll call you right away.
E. I'll call a taxi for you.
F. will you join me for dinner
3b
… If things ________ (go) well，we ____________ (see) all those old faces again. Just think how great it will be! If you think you can come，_________ (drop) me a line and I _____________ (give) you all the details about the reunion. But promise me you'll think about it seriously.
Hey，it′s me. I wanted to talk to you about the training plan for our team. The new season is coming，so it′s time to make a plan for our training. If we ________ (start) earlier this year，I think we ____________ (perform) better. ________ (give) me a call and _____ (let) me know if you ________ (think) of a good time for everyone to meet. Talk to you soon.
Fill in the blanks with the correct forms of the verbs in brackets. Then discuss what the situations are and whom the information is for.
3c
go
will see
drop
will give
start
will perform
Give
let
think
一、选择题
( )1. If it ______ tomorrow, we will stay at home.
A. rains B. will rain C. rained D. rain
( )2. You ______ pass the exam if you study hard.
A. can B. could C. are able to D. will be able to
( )3. If you ______ to the party, you’ll have a great time.
A. go B. will go C. went D. going
( )4. The teacher ______ angry if you ______ to school late.
A. is; come B. will be; will come C. will be; come D. is; will come
( )5. I ______ you if he ______ back.
A. will tell; comes B. tell; comes C. will tell; will come D. tell; will come
A
D
A
C
A
Exercise
第一关
第三关
第四关
第二关
第六关
第五关
战斗力：0
帮助哪吒通关
If I go there, I’ll try all the delicious local food.
如果我去那里,我会尝试当地所有美味的食物。
(1)此句为if引导的条件状语从句,主句是一般将来时,从句用一般现在时。(主将从现)
Summary
1. The ____________ (professor) speech made us think deeply.
2. My friends and I sometimes argue but always ____________(和好).
3. I prefer _______________(面对面的) talks because they’re clearer.
4. Stay __________(镇静) when others can’t understand your expression.
5. Don’t worry about missing the ________(机会)—try again!
根据句意和提示完成句子
professor’s
make up
face-to-face
calm
chance
Exercise
Homework
一、必做
完成课本上与本节课内容相关的练习题，如语法填空、句型转换等，巩固 if 引导的条件状语从句的用法。
二、选做
用所学的交流方式词汇和 if 引导的条件状语从句，写一篇短文，描述自己在一次交流经历中遇到的问题及解决方法，不少于 80 词。
Good communication skills
are key to success in life.
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一、用括号内所给词的适当形式填空
1. If it _______________ (not rain) tomorrow, we’ll go hiking.
2. I ____________ (call) you if I get the news.
3. You ____________ (not pass) the test if you don’t work hard.
4. If she __________ (come) here, we’ll have a party.
5. He ____________ (buy) a new bike if he saves enough money.
二、单项选择
1．If she ______ enough time, she ______ finish the work.
A. has; will B. will have; will C. has; has D. will have; has
2. We ______ go for a picnic if it ______ cloudy tomorrow.
A. don’t; is B. won’t; is C. aren’t; will be D. didn’t; was
3. If you ______ up early, you ______ late.
A. get; aren’t B. will get; won’t be C. get; won’t be D. will get; aren’t
4. She ______ happy if you ______ to her birthday party.
A. is; come B. will be; will come C. will be; come D. is; will come
5. If I ______ free tomorrow, I ______ to the park.
A. am; go B. will be; will go C. am; will go D. will be; go
三、翻译句子
1. 如果明天有会议，我会马上通知你。
__________________________________________________
如果你需要帮助，就给我写封信。
____________________________________________________
如果他认真对待训练，他会进步很快。
____________________________________________________
如果我们忘记了聚会的细节，就查看邀请函。
_______________________________________________________
参考答案：
一、用括号内所给词的适当形式填空
1．doesn't rain 。2．will call 3. won't pass 4．comes 5．will buy
二、单项选择题。
1-5 ABCCC
三、翻译句子
1. If there is a meeting tomorrow, I will inform you right away.
2. If you need help, drop me a line.
3. If he takes training seriously, he will improve quickly.
4. If we forget the details of the reunion, check the invitation.
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一、教学目标
（一）语言能力
理解 if 引导的条件状语从句的定义（表某事发生的前提 / 条件）；
掌握 “主将从现”“主情从现”“主祈从现” 三种核心结构及主从句时态规则；
能完成句子匹配（3b）、动词填空（3c）及选择题等练习，在沟通场景中关联 “假设情境” 与 “结果 / 建议”。
（二）思维品质
通过观察 3a 中的 if 从句例句、分析主从句时态，培养独立思考与发散思维，学会主动归纳语法规律（而非被动接受）。
（三）文化意识
通过 “面对面沟通”“短信沟通” 等情境例句，感知不同沟通方式的适用场景，理解有效沟通在日常生活中的重要性。
（四）学习能力
能借助 “找 if 划从句” 的技巧（if 后为从句，主从句位置可互换），自主识别与分析 if 条件句，提升语法自主学习能力。
二、教学重难点
（一）教学重点
三种结构的辨析与记忆：
主将从现（主句一般将来时，从句一般现在时）；
主情从现（主句含情态动词 can/may/should 等，从句一般现在时）；
主祈从现（主句为祈使句，从句一般现在时）；
主从句位置规则：从句在前需加逗号，从句在后无需逗号。
（二）教学难点
在具体语境（如沟通问题解决、计划安排）中正确选择三种结构，避免时态混淆（如从句误用一般将来时）。
三、教学准备
多媒体课件（含 3a 例句表格、哪吒闯关动画、练习题库）；
课堂练习单（3b 句子匹配、3c 填空、课后词汇练习）；
《Count on me》歌曲片段（Lead-in 环节使用）。
四、教学过程
（一）导入（Lead-in，5 分钟）
播放《Count on me》歌曲片段，引导学生感知 “互助沟通” 的主题，自然过渡到本单元 “沟通” 相关语法；
任务 1：呈现 3a 中的 5 个 if 从句例句（如下），让学生快速朗读，找出所有含 “if” 的句子，初步感知 if 从句的形式：
If you want to solve the problem, a face-to-face talk usually works the best.
Texting can make things worse if you’re not careful with your words.
If the rehearsal ends at 7:00 p.m., I’ll pick you up at 7:15 p.m.
If you stay calm and say sorry, it will help.
If I go there, I will try all the delicious local food.
（二）新知呈现（Presentation，15 分钟）
定义讲解：明确 “if” 为连词，意为 “如果、假如”，引导的从句是主句动作的前提 / 条件（如 “if the rehearsal ends at 7:00 p.m.” 是 “I’ll pick you up” 的条件）；
主从句划分技巧：通过例句演示 “找 if，划从句”——if 后面的部分为从句，if 可放主句前（加逗号）或后（无逗号），结合 “哪吒闯关第一关” 活动让学生实操划分（如 “We will make snowmen if it snows” 划从句）；
时态规律归纳：
分析 3a 例句的主从句时态，引导学生自主发现：① 主句为一般将来时（will + 动原），从句为一般现在时→主将从现（如 “If I go there, I will try...”）；② 主句含情态动词（can/should 等），从句为一般现在时→主情从现（如 “Texting can make... if you’re not careful...”）；③ 主句为祈使句（动原开头），从句为一般现在时→主祈从现（补充例句：“If you go to London, visit the Science Museum”）；
用表格总结三种结构，强化记忆：
结构类型 主句特点 从句特点 例句
主将从现 一般将来时（will + 动原） 一般现在时 If it snows, we will make snowmen.
主情从现 含情态动词（can/should 等） 一般现在时 If you get up late, you can take a taxi.
主祈从现 祈使句（动原开头） 一般现在时 If he comes back, tell me.
（三）巩固练习（Practice，20 分钟）
基础练习（针对性强化）：
Practice 1（主情从现专项）：选择题 3 道（如 “If you _____ a cold, you should see a doctor.” 选 has），集体核对并讲解错误原因；
Practice 2（主祈从现专项）：选择题 3 道（如 “______ hard if you want to pass the exam.” 选 Work），同桌互查答案；
语境练习（课本活动）：
3b 句子匹配：给出 6 个 if 从句（如 “If we have a face-to-face meeting”）和 6 个结果句（如 “we'll understand each other better”），学生独立完成后小组展示匹配结果，说明选择依据；
3c 动词填空：提供两段语境材料（团队训练计划、聚会邀请），让学生用括号内动词的正确形式填空（如 “If we ______ (start) earlier, we will perform better”），完成后同桌讨论语境含义（如第一段是 “团队训练计划沟通”，对象是队友）；
综合练习（拓展应用）：
词汇 + 语法结合：根据句意填单词（如 “The ______ (professor) speech made us think deeply.”“I prefer ______ (face-to-face) talks”），巩固沟通相关词汇，同时嵌入 if 从句应用（如 “Stay calm if others can’t understand you”）。
（四）课堂总结（Summary，3 分钟）
师生共同回顾：
if 条件状语从句的核心：三种结构（主将 / 主情 / 主祈从现）、主从句时态规则；
主从句位置：从句在前加逗号，从句在后无逗号；
快速例句回顾：随机抽取学生用三种结构各造 1 个简单句（如 “主祈从现：If you feel tired, have a rest”），检验掌握情况。
（五）作业布置（Homework，2 分钟）
必做题：完成课本对应语法填空、句型转换练习，巩固三种结构的基本用法；
选做题：用 “face-to-face talk”“text”“stay calm” 等沟通词汇 + if 从句，写一篇 80 词以上短文，描述一次自己的沟通问题及解决过程（如 “Last week I argued with my friend. If I texted him, things might get worse, so I had a face-to-face talk. If I stayed calm and said sorry, he would forgive me...”）。
五、板书设计
Unit 8 Let’s Communicate! Section A（If 条件句）
一、定义：if 表 “如果”，从句 = 前提 / 条件
二、核心结构（主从时态）：
1. 主将从现：主句 will + 动原，从句一般现在时（例：If it rains, we will stay at home.）
2. 主情从现：主句含 can/should 等，从句一般现在时（例：If you study hard, you can pass the exam.）
3. 主祈从现：主句祈使句（动原），从句一般现在时（例：If he calls, tell me.）
三、主从句位置：从句前，加逗号；从句后，无逗号
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