(共32张PPT)
Unit 7 Memory
Grammar
牛津深圳版（广州·沈阳通用）
八年级上
Lead in
If you make the picture big, strange or silly,
you will remember it better.
the simple present tense
the simple future tense
We have already learnt to use conditional sentences
to talk about probable results.
Conditional sentences
Revision
If it rains tomorrow,
I_____________________________.
will do my homework at home
If it __________ tomorrow,
_________________.
I’ll go shopping
doesn’t rain
While - Learning
If you switch off the light, _____________________.
the rooms
becomes dark
the result that will certainly happen
If you put salt into water, ____________.
it disappears
a possible action
the result that will certainly happen
Lead-in
We can also use conditional sentences to talk about results that will certainty happen.
If you put salt into water, it disappears.
The if-clause talks about a possible action.
The main clause talks about the result that will certainly happen.
A Conditional sentences (2)
Grammar
Rules
Read these if-clauses and draw lines to match them with the results.
Practice
In pairs, make conversations about the sentences in A1 on page 103.
Practice
S1: What happens if you switch off the lamp
S2: The room becomes dark.
S1: Are you sure
S2: Of course, I’m sure. If you switch off the lamp, the room becomes dark.
S1: What happens if you put wood into water
S2: It floats.
S1: Are you sure
S2: Of course, I’m sure. If you put wood into water, it floats.
Practice
Complete these sentences with the words
in brackets.
If you ____ ice, __________ water. (turns/heat/it/into)
If you ____ steam, __________ water. (into/cool/turns/it)
Oil ___________________ water. (on/floats/pour/it/you/if)
Water ______________ it. (you/heat/boils/if)
heat
it turns into
cool
it turns into
floats if you pour it on
boils if you heat
Practice
The word unless can mean if ... not .
Grammar
B if …not and unless
Rules
Draw lines to match the beginning of the sentences in Column A with the endings in Column B.
Practice
Rewrite the following sentences with unless.
2. You will get a toothache if you do not brush your teeth every day.
Unless you brush your teeth every day, you will get a toothache. /
You will get a toothache unless you brush your teeth every day.
Practice
3. This room will get very hot if you do not open the window.
4. If you do not close that window, flies will get in.
Unless you open the window, this room will get very hot./
This room will get very hot unless you open the window.
Unless you close that window, flies will get in./
Flies will get in unless you close that window.
Practice
5. I will leave this restaurant if the waiter does not come soon.
Unless the waiter comes soon, I will leave this restaurant. /
I will leave this restaurant unless the waiter comes soon.
Practice
1. If he _____ (come), I ______ (tell) him about the news at once.
2. You can’t buy the iPad unless you _____ (have) enough money.
3. A mouse _____ (run) away quickly if it _____ (see) a cat.
4. If it ____________ (not snow) tomorrow, we ______ (go) sightseeing.
5. You can’t take part in the activity unless you ___ (be) a member of the club.
comes
will tell
have
runs
sees
doesn’t snow
will go
are
I. 根据句意用所给单词的适当形式填空。
能力提升
1. Dr. Wang will give us a talk if it is fine tomorrow. (同义句转换)
Dr. Wang _______ give us a talk _______ it is fine tomorrow.
2. Linda will have free time. She’ll take memory lessons. (合并句子)
Linda will take memory lessons ___ she ____ free time.
will not
unless
if
has
II、按要求完成下列句子。
3. Sam will miss the first bus unless he gets up early. (同义句转换)
Sam will miss the first bus ___ he ________ get up early.
if
doesn’t
能力提升
4. Unless you are careful, the car may hit you. (用 if 改写句子)
___ you are careful, the car ________ hit you.
If
may not
5. No one is going to help you unless you change your mind. (用 if 改写句子)
No one is going to help you ___ you _____________ your mind.
if
don’t change
6. I won’t buy that backpack _______ it costs less than ￥20. (用 if 或 unless 填空)
unless
能力提升
Post-Learning
if引导的条件状语从句
当表示客观事实、结果时，if条件句的主句和从句都用一般现在时。
if 从句(条件) 主句(结果)
一般现在时 一般现在时
If the temperature is below zero, water turns into ice.
If you throw something into the air, it falls back to the ground.
Summary
if 从句可以放在句首，也可以放在句末。如果把 if 从句放在句首，常用逗号将其与主句隔开。如：
Water turns into ice if the temperature is below zero.
= If the temperature is below zero, water turns into ice.
注意：if 引导的条件状语从句通常不用一般将来时。在需要表达将来含义时，一般用现在时表示。
Summary
unless意为“除非”，和if…not(如果……不……)的意思相近，且两个结构通常可以互换使用。
If you do not work hard, you will not succeed.
如果你不努力，你就不会成功。
= Unless you work hard, you will not succeed.
除非你努力工作，否则你不会成功。
Summary
B if …not and unless
在unless引导的从句里，通常用现在时表示将来。如：
I’ll not attend the party unless he invites me.
除非他邀请我，否则我不会参加这个派对。
Unless you have good idea, I’ll take his advice.
除非你有更好的主意，否则我将采取他的建议。
注意：unless用于引出某事发生或成立所必需的条件。如：
除非你能做到，否则不要随便许诺。
You should not promise anything unless you can do it.
Summary
Ⅰ.语法巩固
( )1. —Celia, join us in the Super Summer Camp if
it ________ this weekend.
—That’s good idea.
A. rains B. will rain
C. doesn’t rain D. won’t rain
( )2. If I finish the work tomorrow, I ________ to the Shopping Centre with you.
A. will go B. went C. go D. goes
C
A
Practice
( )3. Your dream will come true ________ you put your heart and soul into it.
A. if B. unless C. although D. since
( )4. If Amy ________ well in her exams, she will go to Beijing University in September.
A. did B. does C. is doing D. will do
( )5. We can’t catch up the development of the society ________ we keep studying.
A. unless B. if C. when D. after
A
A
B
Practice
Ⅱ. 根据句意，用if或unless填空
1. Don’t touch anything ________ your teacher tells
you to.
2. You will be tired tomorrow ________ you go to bed late.
3. I will be home ________ you come to visit me this weekend.
4. I will go to climb the mountain ________ it doesn’t rain tomorrow.
5. We will go swimming after school ________ we have too much homework.
unless
unless
if
if
if
Practice
复习Grammar笔记，背写序数词。
完成导学卷的《课后练习》。
Homework
https://www.21cnjy.com/help/help_extract.php(
www.21cnjy.com
) (
www.21cnjy.com
)
(
www.21cnjy.com
) (
www.21cnjy.com
)
(
21世纪教育网精选资料
)
中小学教育资源及组卷应用平台
Unit 7 Memory Period 3导学案
学生姓名 班级 序号
课题内容 Grammar
教材分析 Grammar板块由两部分组成。A部分介绍了if条件句表示条件与结果存在必然联系的用法。B部分介绍了unless条件句的用法，并要求学生掌握其与if…not结构的转换。
学习目标 与 核心素养 语言知识 掌握用if条件句表示条件与结果之间存在必然联系的用法。 掌握unless引导的条件状语从句的用法，以及unless引导的条件状语从句与if…not结构之间的转换。
语言技能 用if条件句完成对话。
情感态度 了解人脑及记忆力的相关知识，养成健康的生活方式，保持活跃的思维与记忆力。
学习重点 if…not结构与unless引导的条件状语从句之间的转换。
学习难点 掌握用if条件句表示条件与结果之间存在必然联系。
温故知新
一、找出下列句子的主句和从句。
①If you like sightseeing ( ), you will love it ( ).
②If you visit People's Square( ), you can also see famous buildings around it( ).
二、单项选择
( )1. —What are you going to do tomorrow
—We will go to the library tomorrow_______ it doesn't rain.
A. when B. if C. but D. because
( )2. The students will go to the Summer Palace if it _________ sunny tomorrow.
A. was B. is C. will be D. are
( )3. If I find his phone number, I _______ you.
A. tell B. told C. will tell D. tells
( )4. If you go to the party, you ______a good time.
A. will have B. have C. would have D. had
( )5. —What's your plan for the weekend？
— If it ______ fine, I will go fishing.
A. will be B. was C. is D. are
三、完成句子
1. 如果我有足够的钱，我打算环游世界。
_____ I have enough money, I ______ ________ ________ travel around the world.
2. 如果周末下雨的话，我就不去上舞蹈课了。
If it _______ on the weekend, I ________ ________ to have dance class.
Ⅰ. if的基本用法
1. If you take a fish out of water, it will die.
如果你把鱼从水里拿出来，它会死的。
2. If you switch off the lamp, the room will become dark. 如果你关了灯，房间就会变黑。
3. If you water a plant, it will grow.
如果你给植物浇水，它就会生长。
【探索】if是连词，意为“________”，引导条件状语从句。当主句是一般将来时的时候，从句要用一般现在时，也就是遵循“________”的原则。
【对点专练】
( )①If I have a dream, I ________ working on it seriously.
A. keep B. kept C. will keep D. am keeping
( )②—What ________ if they ________ to the meeting late
—Sorry, I don’t know.
A. will happen; go B. happened; go
C. happens; will go D. will happen; will go
拓展
含有if引导的条件状语从句的复合句可以改为其他句型：
①祈使句＋and/or＋一般将来时的句子
Get up early, and you will not be late for school.
早点起床，你就不会上学迟到。
＝If you get up early, you will not be late for school.
②带有介词短语的句子
We will finish the work on time with your help.
在你们的帮助下，我们会按时完成工作。
＝If you help us, we will finish the work on time.
Ⅱ. unless的基本用法
1. I will finish the book today unless I feel tired.
除非我累了，否则我今天会完成这本书。
2. Unless you practise playing the piano every day, you will not play it well.
除非你每天练习弹钢琴，否则你弹不好。
3. You will get a toothache unless you brush your teeth every day.
除非你每天刷牙，否则你会牙疼的。
【探索】unless＝if…not，引导条件状语从句，表示“如果不；除非”，遵循“主将从现”原则，主句用一般将来时，从句要用________时。
【对点专练】
( )①Mary often walks the dog in the afternoon ________ bad weather stops her.
A. when B. unless C. because D. since
( )②I ________ you come in ________ you show me your passport.
A. don’t let; if B. won’t let; if
C. won’t let; unless D. will let; unless
巩固练习
Ⅰ.语法巩固
( )1. —Celia, join us in the Super Summer Camp if it ________ this weekend.
—That’s good idea.
A. rains B. will rain C. doesn’t rain D. won’t rain
( )2. If I finish the work tomorrow, I ________ to the Shopping Centre with you.
A. will go B. went C. go D. goes
( )3. Your dream will come true ________ you put your heart and soul into it.
A. if B. unless C. although D. since
( )4. If Amy ________ well in her exams, she will go to Beijing University in September.
A. did B. does C. is doing D. will do
( )5. We can’t catch up the development of the society ________ we keep studying.
A. unless B. if C. when D. after
Ⅱ. 根据句意，用if或unless填空
1. Don’t touch anything ________ your teacher tells you to.
2. You will be tired tomorrow ________ you go to bed late.
3. I will be home ________ you come to visit me this weekend.
4. I will go to climb the mountain ________ it doesn’t rain tomorrow.
5. We will go swimming after school ________ we have too much homework.
Grammar同步练习
一、单项选择。
( )1. ________ you ring Tony, he won't know about the party on Friday.
A. If B. When C. Unless D. After
( )2. ________ you go to bed earlier at night, you ________ tired in the morning.
A. Unless; won't be B. If; won't be
C. If; aren't D. Unless; aren't
( )3. You will achieve nothing ________ you work hard.
A. unless B. because C. when D. if
( )4. I ________ basketball if it isn't fine this afternoon.
A. doesn't play B. will not play C. play D. will play
( )5. If you ________ to join an educational exchange, you must apply for it first.
A. want B. wanted C. will want D. are wanting
( )6. Our business won’t improve ______we offer better services to our customers.
A. because B. unless C. after D. since
( )7. ---The students of Grade 9 have to take part in the P.E test.
----Yes, _______ you want to pass it and be stronger, practice more.
A. unless B. until C. if D. though
( )8.---Let's go climbing Langshan Mountain this Saturday ____the weather is fine.
---Good idea!
A. though B. if C. unless D. because
( )9. I won’t stop loving English _______the sun rises in the west.
A. if B. although C. because D. unless
( )10. In summer，food will go bad quickly ______we put it into a fridge.
A. if B. unless C. as soon as D. when
二、用所给单词的正确形式填空，使句子完整、通顺。
1. If you aren't careful enough, you ________ (lose) yourself in the forest.
2. I don't know the word you're saying unless you _______ (spell) it.
3. I'm sure you ______________ (improve) your spoken English if you use this method.
4. If you ________ (want) to know about that, I'll tell you.
5. Jane's teeth won't be healthy unless she ________ (stop) eating chocolate.
三、同义句转换。
1. You won't learn English well unless you practise it every day.
You won't learn English well ________ ________ __________ ________ it every day.
2. Keep working hard, and you will achieve success.
________ _______ keep working hard, you will achieve success.
3. If she doesn't have money, she won't buy a car.
________ ________ ________ money, she won't buy a car.
4. I will lend you some money if I don't buy a computer.
I will lend you some money ________ ________ ________ a computer.
5. If you don't work hard, you will fall behind.
________ ________， or you will fall behind.
四、语法填空。
Feeling bad today If you often 1.______ (feel) tired and the doctor can't find anything wrong with you, you may be in the state of sub health(亚健康).Sub health is a state 2._______ health and illness. If you are under stress (压力), you 3.___________ (become) sub healthy easily. If you 4._______ (worry) about your
exams, you will feel nervous. You 5.____________ (not sleep) well or eat well unless you pass all your exams. Sub health is
6. ______ serious problem. 7.________ you change your living habits, it is not easy for you to get well soon. For example, you should get up early and go to bed early. And you should exercise regularly. 8. ________ you feel nervous or tired, you can play ball games or listen to music. As for meals, it is better 9.________ (eat) less salt and sugar. Vegetables, fruit and fish are important to your body. You should eat them more. If you can keep these habits for a few days, you 10.________ (be) healthy again.
参考答案：
课前预习
一、从句，主句， 从句， 主句
二、1. BBCAC
三、1. If, am going to 2. rains, won’t go
课堂同步
A 对点专练：CA
B 对点专练：BC
巩固练习：
I CAABA
II
1. unless 2. if 3. if 4. if 5. unless
课后训练
一、CBABA BCBDB
二、1. will lose 2. spell 3. will improve 4. want 5. stops
三、1. if you don’t practice 2. If you 3. Unless she has
4. unless I buy 5. Work hard
四、1. feel 2. between 3. will become 4. worry 5. won’t sleep
6. a 7. Unless 8. If 9. to eat 10. will be
21世纪教育网(www.21cnjy.com)中小学教育资源及组卷应用平台
Unit 7 Memory 教学设计
课题 Period 3 Grammar 单元 Unit 7 学科 英语 年级 八年级上
教材分析 Grammar板块由两部分组成。A部分介绍了if条件句表示条件与结果存在必然联系的用法。B部分介绍了unless条件句的用法，并要求学生掌握其与if…not结构的转换。
学习目标与核心素养 语言知识 掌握用if条件句表示条件与结果之间存在必然联系的用法。掌握unless引导的条件状语从句的用法，以及unless引导的条件状语从句与if…not结构之间的转换。
语言技能 用if条件句完成对话。
情感态度 了解人脑及记忆力的相关知识，养成健康的生活方式，保持活跃的思维与记忆力。
重点 if…not结构与unless引导的条件状语从句之间的转换。
难点 掌握用if条件句表示条件与结果之间存在必然联系。
教学过程
教学环节 教师活动 学生活动 设计意图
导入新课 Warm up1.Show a Chinese poem “如果……”.2.Ask students to find the if and unless structures.VideoPlay a video on the present perfect tense 1.Watch a poem which is a speech related to :“如果……”.2.Get a general idea of the if and unless sentences Watch a video on the present perfect tense To arouse the interest and lead them to get into the grammar
新课讲授 1. RevisionReview Conditional sentencesShow Ss pictures and ask Ss to to make some sentences. And ask them to analyze the structure.Play a game:students talk about the dreams. Each sentence must be connected with the one before it .2. While-learningif conditional sentencesShow Ss other pictures and ask Ss to to make some sentences. And ask them to analyze the structure.3. Practice makes perfect.Present the task, and limit the time for students to finish the exercise.4. if…not & unlessShow Ss some examples. and ask them to analyze the structure.5. Practice makes perfect.Present the task, and limit the time for students to finish the exercise. 1. See the pictures and make up sentences with if , pay attention to the tenses.Tell the students the rules of the game.Be the judge and correct the mistakes.See the pictures and make up sentences with if , pay attention to the tenses. Try to analyze the structure. And make a conclusion.Finish the exercise individually. Check the answers with each other and then discuss the mistakes. Read and learn. Find out the rules individually. Take notes and finish the tasks.Finish the exercise individually. Check the answers with each other and then discuss the mistakes. 1. Have the students to summarize the rules by themselves.Using a game to help the students use the grammar as well as cultivate their spirit of team-work.Have the students to summarize the rules by themselves.To consolidate what they have learned in this class.Have the students to summarize the rules by themselves.To consolidate what they have learned in this class.
课堂小结 Give more exercises to consolidate the forms and usage of conditional sentences. Go over the different usages of if and unless. And go over the tense of conditional sentences. To make students have a good habit of taking notes and have a general understanding of this class
板书 Unit 7 Grammarif引导的条件状语从句当表示客观事实、结果时，if条件句的主句和从句都用一般现在时。if 从句(条件)主句(结果)一般现在时一般现在时If the temperature is below zero, water turns into ice.If you throw something into the air, it falls back to the ground.if 从句可以放在句首，也可以放在句末。如果把 if 从句放在句首，常用逗号将其与主句隔开。如：Water turns into ice if the temperature is below zero.= If the temperature is below zero, water turns into ice.注意：if 引导的条件状语从句通常不用一般将来时。在需要表达将来含义时，一般用现在时表示。B if …not and unlessunless意为“除非”，和if…not(如果……不……)的意思相近，且两个结构通常可以互换使用。If you do not work hard, you will not succeed.如果你不努力，你就不会成功。= Unless you work hard, you will not succeed.除非你努力工作，否则你不会成功。在unless引导的从句里，通常用现在时表示将来。如：I’ll not attend the party unless he invites me.除非他邀请我，否则我不会参加这个派对。Unless you have good idea, I’ll take his advice.除非你有更好的主意，否则我将采取他的建议。注意：unless用于引出某事发生或成立所必需的条件。如： 除非你能做到，否则不要随便许诺。 You should not promise anything unless you can do it.
21世纪教育网 www.21cnjy.com 精品试卷·第 2 页 （共 2 页）
HYPERLINK "http://www.21cnjy.com/" 21世纪教育网(www.21cnjy.com)
