内容正文:
Unit 8 Every Coin Counts!-同步【语法】-if 引导的条件状语从句-复习和练习
【同步语法知识点复习】
一、本课学习总重点
(1) 核心知识点
主将从现:
1. if 引导真实条件状语从句,表达客观条件、将来可能发生的事情。
2. if 从句(条件句)用一般现在时,主句分 3 种时态结构:一般将来时 / 情态动词原形 / 祈使句。
1) 从句:if +主语+一般现在时(三单 / 原形变化),表假设条件;
2) 主句三类搭配:
①一般将来时(will + 动词原形)
②情态动词 can/may/must + 动词原形
③动词原形开头祈使句
2. 三大学习目标
①Activity 1:对话感知,从例句掌握 if 从句基础句式,理解 “有零花钱就存钱 /去旅行” 的条件逻辑;
②Activity 2:熟记表格 3 种主句结构,会根据时态填空、仿写句子;
③Activity 3:链式造句,连续套用 if 从句进行语段写作,落实写作应用。
二、分 Activity 精细精讲
1. Activity 1
原对话例句:
①If I have pocket money, I will save it in my piggy bank.
②If I have pocket money, I'm going to visit Yunnan.
规律提炼:if 从句用一般现在时 have,主句用一般将来时 will save/be going to visit,契合主将从现。
翻译:如果我有零花钱,我就把它存进存钱罐 / 去云南旅行。
2. Activity 2
If 从句(时态固定:一般现在时)
主句三类结构
课本填空答案 + 例句
一般现在时
一般将来时 (will + 动原)
If you buy that purple blouse, you will have to use your pocket money.
一般现在时
情态动词 (can/may/must + 动原)
If you save enough money, you can buy your favorite books.
一般现在时
祈使句(动词原形开头)
If you want to go shopping, make a shopping list first.
3. Activity3 链式造句
1) 链式逻辑:前一句话的主句结果 = 下一句 if 从句的前提条件,环环相扣,每一组都严格遵守「if 从句一般现在时,主句一般将来时(主将从现)」
结构模板:
A. If A(现), I will B(将来).(A 成立→实现 B)
B. If B(现), I will C(将来).(上一步 B 实现,成为新条件→实现 C)
C. Then, if C(现), I will D(将来)…… 不断顺延拓展
2) 仿造的句子:
If it is sunny tomorrow morning, I will go to the park to run.
If I keep running for a month, I will become stronger.
Then, if I am strong enough, I will join the school sports meeting.
【同步语法练习】
基础
1、 用所给动词变正确形式
1. If I ______(have) pocket money, I will save it.
2. If she ______(buy) the purple blouse, she has to use her money.
3. ______(make) a shopping list if you want to go shopping.
4. You can ______(buy) books if you save enough money.
5. If it ______(rain) tomorrow, we won’t go out.
2、 单项选择
( ) 1.【2023 安徽中考】____ you treat others with your heart, you will get friendship in return.
A.If B.Unless C.Though D.Before
( ) 2.【2023 四川成都中考】If it ____ tomorrow, we will put off the sports meeting.
A.rain B.rains C.will rain D.rained
( ) 3.【2022 广西桂林中考】If you ____ along this road, you will find a big supermarket.
A.go B.goes C.will go D.going
( ) 4.【2023 江苏常州中考】We will fall behind ____ we keep learning every day.
A.if B.unless C.when D.because
( ) 5. If you feel tired, ____ a short rest right now.
A.take B.will take C.takes D.taking
( ) 6. You ____ buy new clothes if you save enough pocket money.
A.can B.will can C.are D.to can
( ) 7. If he ____ enough money, he is going to travel to Yunnan.
A.have B.has C.will have D.having
( ) 8.____ you don’t finish homework, your teacher will be angry.
A.If B.Unless C.Because D.So
( ) 9.We won’t go hiking if it ____ fine this Sunday.
A.isn’t B.don’t C.won’t D.aren’t
( ) 10.If you ____ careful, you can avoid making mistakes.
A.are B.is C.will be D.were
巩固
1、 判断改错
1. If Tom finishes his homework, he will plays basketball outside. ________
2. If the weather will be fine this weekend, we can climb mountains with friends. ________
3. If you prepare for the trip well, to take enough water with you. ________
4. If Lisa save enough money, she may buy a new sports shoes. ________
5. If your parents has free time, visit the old museum together. ________
2、 句型改写
1. I have enough money. I will buy a storybook.(合并为 if 从句)
________________________________________________________________
2. Hurry up, or you’ll miss the bus.(改为 if 否定句)
________________________________________________________________
3. If you work hard, you will pass the exam.(用 unless 改写)
________________________________________________________________
4. If it is rainy tomorrow, we won’t go shopping.(变一般疑问句)
________________________________________________________________
5.You can eat snacks. You finish your homework first.(用 if 合并)
________________________________________________________________
提升
1、 短文填空
My plan is about how to use my pocket money. If I 1._____(have) pocket money from my parents every month, I 2._____ (save) half of it in my piggy bank first. If my money 3._____ (be) enough after six months, I 4._____ (buy) a useful dictionary for my English study. If I still 5._____ (save) some money left later, I will plan a short 6._____ (travel) with my best friend. But if I 7._____ (not save) money carefully, I can’t make any of these plans. My mom says if I keep this good habit, I can learn to manage money well. It is a meaningful lesson for teenagers like me.
二、 链式 if 句子仿写
根据课本的结构模板,仿写相关的if 句子:
If A(现), I will B(将来).
If B(现), I will C(将来).
Then, if C(现), I will D(将来)……
写作要求:
整体按照所给出的结构模板进行写作;
主题任选:课余学习、户外活动、零花钱规划、假期计划四类。
参考答案和解析
基础
1、 用所给动词变正确形式
1.解析:句意:如果我有零花钱,我会存起来。I 非三单用原形。故填 have
2.解析:句意:如果她买这件紫衬衫,就要花自己的钱。she 三单,buy 变 buys。故填 buys
3.解析:句意:如果你想去购物就列购物清单。主句祈使句,动词原形开头。故填 Make
4.解析:句意:如果你攒够钱就可以买书。can 情态动词后用原形。故填 buy
5.解析:句意:如果明天下雨我们就不出门。it 三单,rain 变 rains。故填 rains
2、 单项选择
【单选答案汇总】
1.A 2.B 3.A 4.B 5.A 6.A 7.B 8.A 9.A 10.A
【解析】
1. 解析:句意:如果你用心待人,你会收获友谊。if 引导条件状语从句,主将从现。故选 A
2. 解析:句意:如果明天下雨,我们将推迟运动会。if 从句用一般现在时,it 为三单,用 rains。故选 B
3. 解析:句意:沿着这条路走,你会找到大超市。主语 you,从句谓语用原形 go。故选 A
4. 解析:句意:除非我们每天坚持学习,不然会落后。unless=if…not。故选 B
5. 解析:句意:如果你累了,立刻短暂休息。主句祈使句,用动词原形。故选 A
6. 解析:句意:攒够零花钱你就能买新衣服。主句情态动词 can + 动词原形。故选 A
7. 解析:句意:如果他攒够钱,打算去云南旅行。主语 he 三单,have 变 has。故选 B
8. 解析:句意:如果你完不成作业,老师会生气。if 引导条件。故选 A
9. 解析:句意:周日天气不好我们就不去徒步。it 搭配 be 动词 isn’t。故选 A
10. 解析:句意:细心的话你就能避免犯错。主语 you 搭配 are。故选 A
巩固
1、 判断改错
1. 句意:如果汤姆写完作业,他将要去外面打篮球。
解析:主句是一般将来时,固定结构 will + 动词原形,will 后不可用三单 plays。故改:plays→play
2. 句意:如果本周末天气晴朗,我们就能和朋友们爬山。
解析:if 条件从句遵循主将从现,从句用一般现在时,删除 will;weather 为单数,be 动词用 is。故改:will be→is
3. 句意:如果你好好准备出行,随身带上足量的水。
解析:if 引导从句后,主句为祈使句,要用动词原形开头,去掉不定式 to。故改:to take→take
4. 句意:如果莉萨攒够零花钱,她可以买一双新运动鞋。
解析:从句主语 Lisa 是三单,一般现在时谓语动词变 saves。故改:save→saves
5. 句意:如果你的父母有空,一起去参观老博物馆。
解析:从句主语 parents 是复数,动词用原形 have。故改:has→have
二、句型改写
解析:句意:我有钱,我要买一本故事书。if 引导条件状语从句,从句现、主句将来。故答案是 If I have enough money, I will buy a storybook.
解析:句意:快点,否则赶不上公交。or 换成 If you don’t…。故答案是 If you don’t hurry up, you will miss the bus.
解析:句意:努力学习就能通过考试。unless=if…not。故答案是 Unless you work hard, you won’t pass the exam.
解析:句意:明天下雨我们就不去购物。将来时 will 提前。故答案是 Will you not go shopping if it is rainy tomorrow?
解析:句意:先写完作业才能吃零食。主情从现。故答案是 You can eat snacks if you finish your homework first.
提升
一、短文填空
【短文答案汇总】
1.have 2.will save 3.is 4.will buy 5.save 6.travel 7.don’t save
【解析】
1. 句意:如果每个月我从父母那里拿到零花钱。解析:I 后用动词原形。故填 have
2. 句意:我会先把一半存进存钱罐。解析:主句将来时 will save。故填 will save
3. 句意:六个月后如果我的钱够多。解析:money 不可数,be 动词用 is。故填 is
4. 句意:我会买一本实用英语词典。解析:将来时 will buy。故填 will buy
5. 句意:如果之后我还能剩下部分存款。解析:I 后用原形 save。故填 save
6. 句意:计划和好朋友短途旅行。解析:名词 travel。故填 travel
7. 句意:但如果我不能认真存钱。解析:主语 I,否定 don’t save。故填 don’t save
二、 链式 if 句子仿写
1. If it is sunny tomorrow morning, I will go running in the community park.
2. If I keep running every day for two months, I will become much stronger.
3. Then, if I am fit enough later, I will join the school running match.
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