Unit 8 第3课时 Grammar(内文)-【教与学·学导练】2024-2025学年新教材七年级下册英语同步课件PPT(沪教版2024)
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英语 七年级 下册 配上海教育版
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教与学 学导练 英语 七年级 下册 配上海教育版
Unit 8 Follow your interests
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教与学 学导练 英语 七年级 下册 配上海教育版
第3课时 Grammar
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教与学 学导练 英语 七年级 下册 配上海教育版
目 录
CONTENTS
01
语法聚焦
02
课堂练习
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一、时间状语从句
1. 定义
用表示时间的连词连接一个句子作状语,这样的主从复合句叫作时间状语从句,它在一个句子中说明主句动作发生的时间。常见的引导词有when(当……时候)、before(在……之前)、after(在……之后)、as(随着……)、while(当……时)、as soon as(一……就……)和 till / until(直到)等。
语法聚焦
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2. 时态
(1)当表示现在的动作时,主句和从句同用现在时态。如:
I usually stay at home when my mother goes shopping. 我妈妈去购物时,我通常待在家里。
(2)当表示过去的动作时,主句和从句同用过去时态。如:
I waited until it got dark. 我一直等到天黑。
(3)当表示将来的动作时,主句用一般将来时,从句用一般现在时,即“主将从现”。如:
When your father returns, he will bring some gifts for you. 当你爸爸回来的时候,他会给你带些礼物。
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3. 用法
引导词 含义及用法 举例
when 意为“当……时候”,引导时间状语从句,表示主句的动作和从句的动作同时发生或先后发生 I was thin when I was a child. 当我还是个孩子的时候,我很瘦。
It was raining when I arrived. 我到达时,天正在下雨。
before 意为“在……之前”,引导时间状语从句,表示主句动作发生在从句动作之前 I wouldn't mind another beer before I eat. Will you have one with me?吃饭之前我想再喝一杯啤酒。你愿意陪我喝一杯吗?
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引导词 含义及用法 举例
after 意为“在……之后”,引导时间状语从句,表示主句动作发生在从句动作之后 The Sun came out after the storm ceased. 暴风雨停止后,太阳出来了。
as 引导时间状语从句时,as意为“随着……;一边……一边……”,强调主句的动作或状态伴随着从句中的动作而变化 As children grow up, they become more independent. 随着孩子们长大,他们变得更加独立。
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【拓展】1. while引导时间状语从句时,意为“当……时”,与when的区别如下:
human
比较项 含义及用法 举例
when 从句的谓语动词可以是延续性动词,也可以是非延续性动词 I was reading when you came into the classroom.当你走进教室的时候,我正在看书。
while 从句的谓语动词必须是延续性动词,强调主句和从句的动作同时发生 My mother was cooking while I was doing my homework. 当我在做作业时,我的妈妈在做饭。
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2. until、as soon as引导时间状语从句的用法
(1)until引导时间状语从句:当主句是肯定句,until意为“直到……为止”;当主句是否定句,until意为“直到……才(开始)”。如:
I'll wait for her here until she comes back. 我将在这里等到她回来为止。
I did not work until she came back. 我直到她回来了才开始工作。
(2)as soon as意为“一……就……”, 引导时间状语从句时,表示主句的动作紧跟着从句的动作发生。如:
As soon as I reach Canada, I will ring you up. 我一到加拿大,就给你打电话。
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二、used to的用法
含义 意为“曾经;过去……”,表示过去与现在的对比,暗含现在已经不存在的动作或状态
肯定句 主语+used to+动词原形. I used to be afraid of the dark. 我以前很怕黑。
否定句 主语+didn't use to+动词原形. I didn't use to walk to school. 我过去不会步行上学。
一般疑
问句 Did+主语+use to+动词原形?
肯定回答:Yes,主语+did.
否定回答:No,主语+didn't. —Did he use to be a soldier?他过去是一名士兵吗?
—Yes,he did. 是的,他过去是一名士兵。
—No, he didn't. 不是,他过去不是一名士兵。
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反意疑
问句 主语+used to+动词原形,didn't+主语?
肯定回答:Yes, 主语+did.
否定回答:No, 主语+didn't. —She used to stay up late to watch TV, didn't she?她过去常常熬夜看电视,不是吗?
—Yes, she did. 是的,她过去常常熬夜看电视。
—No, she didn't. 不是,她过去没有熬夜看电视。
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【拓展】与used to相关的短语辨析
比较项 含义及用法 举例
used to do sth. 意为“过去常做某事”,表示过去习惯性的动作 Kay used to work hard. 凯曾经很努力地工作。
used to be+形容词 / 名词 意为“过去常常是……(状态)/ 过去是……(职业)”,表示过去习惯性存在的状态 Jay used to be lazy. 杰伊曾经很懒。
Kate used to be a model worker. 凯特曾是一位模范工人。
be / get used to (doing) sth. 意为“习惯于 (做) 某事”, to是介词, 后接名词、代词或动名词 Rita is / gets used to getting up early now. 丽塔现在习惯早起了。
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比较项 含义及用法 举例
use sth. to do sth. =use sth. for doing sth. 意为“用……做……”,此结构为主动语态 We use the knife to cut / for cutting fruit. 我们用刀子切水果。
be used to do sth. =be used for doing sth. 意为“被用来做某事”,此结构为被动语态 Pens are used to write / for writing. 钢笔是用来写字的。
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一、从括号里选择正确的词(组)填空
1. Lucy likes to take a shower ____________________ (before / after) she goes to bed.
2. My grandfather was not at home ____________________ (when / until) I came to visit him.
3. My cousin became a doctor ____________________ (before / after) he finished medical school.
课堂练习
before
when
after
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4. ___________________ (When / While) she comes, I will tell her to wait for you.
5. I will tell him the news ____________________ (as soon as / until) he comes back.
6. ____________________ (after / as) time goes by, you will get to know the importance of family.
7. Tom has to finish his homework ____________________ (after / before) his mother comes home.
When
as soon as
As
before
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8. The noise in the street didn't stop ____________________ (until / after) it was midnight.
9. Wood is used ____________________ (make / to make) desks.
10. My dad ____________________ (used to drive / used to driving) me to school.
until
to make
used to drive
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二、单项填空
( )1. You will never truly understand your parents' great love ____________________ you grow up. (2024四川泸州)
A. until B. if C. since D. as
( )2. You should turn off the lights ____________________ you leave the room.(2023天津)
A. until B. before C. although D. so
A
B
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( )3. —Please give the Chinese book to Linda.
—OK. ____________________ I see her, I will give it to her. (2023湖南益阳)
A. As soon as B. Unless C. Before
( )4. —__________ Mike __________ wear a pair of glasses?(原创题)
—Yes, he did.
A. Is; used to B. Did; use to
C. Did; used to D. Is; use to
A
B
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( )5. —How is your grandma?
—She's fine. She used to __________ TV at home. But now she is used to __________ out for a walk. (原创题)
A. watch; go B. watching; go
C. watch; going D. watching; going
C
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三、语法填空
You may have a hobby for fun 1. __________ you are not working or at school. 2. __________ (hobby) help you pass the time in a happy way, so they are sometimes called pastimes (消遣). There 3. __________ (be) many different types of hobbies. With some of them such as reading, doing puzzles or writing poems, you need to use your brain. With others such as painting and cooking, you need to use 4. __________(you) hands. Many people also enjoy 5. _________________ (collect) things such as coins or stamps from different countries.
when
Hobbies
are
your
collecting
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You usually do the activities above indoors6. __________ your own. However, you can also do many things for fun outdoors, sometimes with other people. Popular outdoor activities include walking, cycling, fishing 7. __________ riding horses. Most of these hobbies give you exercise, and keep you fit and 8. __________ (health).
Everyone should have 9. __________ hobby of one kind or another. It is important 10.__________ (have) some pleasure in your life.
on
and
healthy
a
to have
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THANKS!
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