Unit 4 Growing up Grammar课件(共29张PPT) 2023-2024学年牛津译林版英语九年级上册

(共29张PPT)
译林版
初中英语 译林版九年级上册
Unit 4
Period 3
Grammar
新课导入
Free Talk
1. What is a time clause
2. What words can introduce time clauses
1
2
能熟悉并能正确运用本课时的重点单词和短语。
能掌握before、after、when和while引导的时间状语从句。
3
能掌握since、till和until引导的时间状语从句。
4
能掌握as soon as和whenever引导的时间状语从句。
1. Tigers wait _______ it is dark, then go out to find their food
A. since B. until C. as D. because
2. He brushed his teeth ______ he went to bed.
A. after B. while C. before D. since
预习检测
B
C
3. —_______ did the rainstorm come
—While we _______ a Physics lesson yesterday.
A. When; have had B. While; are having
C. When; were having D. While; have
4. David is a bookworm. _________ we see him, he always reads a book.
A. Until B. After C. Whenever D. Since
5. —I can hardly believe my eyes. Is that you, Mary
— Yes, it has been almost 20 years ______ we separated.
A. before B. since C. after D. until
C
C
B
知识梳理
Language Points
... he scored 41 points in a game against the Atlanta Hawks.
……他在对阵亚特兰大鹰队的一场比赛中得了41分。
against prep. 对抗，与……相反，违反
e.g. Our class will play basketball against Class 2.
我们班要与二班进行篮球对抗赛。
We should never do anything against the law.
我们不应该做违法的事。
before、after、when和while引导的时间状语从句
Presentation
Can you tell us how to use this four conjunctions
1. He remained there for about a year before the NBA took notice of him.
2. After he graduated, he was forced to play in another basketball league.
3. When he finally got the chance, he scored 20 points in his first game.
4. While (he was) attending junior high, Spud tried out for the school team.
Using before, after, when and while
时间状语从句是指在复合句中充当时间状语的句子。
before意思是“在……之前”，表示主句动作发生在从句动作之前。
Close the windows before you leave the room, please.在你离开房间前，请关上窗。
after意思是“在……之后”，表示主句的动作发生在从句的动作之后。
I went to school after I finished my breakfast.我吃完早饭后去上学。
when意思是“当……时”，表示主句动作发生的特定时间。
While my sister was sweeping the floor, I was washing the dishes.我姐姐扫地时，我在洗碗。
while意思是“当……时”，强调主句动作和从句动作是同时发生的。
The days get longer when spring comes.春天来时，白天变长了。
注意：while引导的从句的谓语动词必须是延续性的。
注意：before和after也可以作为时间介词。如：
before 9 a.m. after lunch
while还可以表示“在……期间”，表示主句动作发生在从句动作进行的过程中。
While the boys were playing football, it rained. 当男孩子们踢足球时，下雨了。
注意： 在when和while引导的从句中，当主句和从句的主语一致，并且从句中有be动词时，可以省略主语和be动词，构成when/while+ -ing结构。
When (she is) in trouble, she always asks for my help.她遇到困难时总是向我求助。
While (I am) travelling, I like to buy some souvenirs.旅游时我喜欢买纪念品。
注意： before, after, when和while既可放在句首，也可放在句中。
David is writing in his diary about one of his days. Help him combine his sentences using before, after, when or while.
I go jogging every morning. Then I have breakfast.
__________________________________________________.
2. I practised playing basketball for hours. I felt tired out. __________________________________________________.
3. I met Peter. I was waiting at the bus stop.
__________________________________________________.
4. I was watching TV. I received a call from my uncle.
__________________________________________________.
5. I was ready to go to bed. My father came back from work.
__________________________________________________.
I go jogging every morning before I have breakfast
After I practised playing basketball for hours, I felt tired out
I met Peter while (I was) waiting at the bus stop
While (I was) watching TV, I received a call from my uncle
I was ready to go to bed when my father came back from work
通过以
活动小结
当堂检测见DCF课件
通过以上的活动，我们学习了before、after、when和while引导的时间状语从句：
before表示主句动作发生在从句动作__________，
after表示主句动作发生在从句动作_________,
when表示主句动作发生的___________
while强调主句动作和从句动作是_________发生的。
之前
之后
特定时间
同时
探究二
since、till和until引导的时间状语从句
1. You've been happy since I first met you.
2. Spud remained in another basketball league for about
a year till/until the NBA took notice of him.
3. Until his dream came true, Spud never gave up.
4. Do not wake me up until you finish your work.
Presentation
Can you tell us how to use this three conjunctions
since意思是“自从……以来”。一般情况下，从句谓语动词用一般过去时，而主句的谓语动词用现在完成时。
They have been friends since they were at primary school.他们从小学起就一直是好朋友。
注意：since引导的从句的谓语动词可以是延续性动词，也可以是瞬时动词。
till和until意思是 “到……为止” ，一般情况下两者可以互换。但till不如until正式。
Walk till/until you see a white house. 一直走到你看到一座白房子为止。
注意：如果主句中的谓语动词是瞬时动词，该动词用否定形式,形成“not ... till/until结构，意思是“直到……才（开始）”。
I did not go to bed till/until I finished my homework. 直到做完作业我才上床睡觉。
注意：since、till和until也可以作为时间介词。如：
since 2006 till/until today
Here are more sentences from David's diary entry. Complete his sentences with since, till or until.
1. I have been crazy about playing basketball _____ I was a little boy.
2. The weather has been awful this week. The rain did not stop ________
yesterday evening, so we could not practise basketball for several days.
3. We played basketball in the playground this afternoon ________ it was
getting dark.
4. It is the first time we have played basketball ________ Monday. We
enjoyed ourselves very much.
5. I waited for 20 minutes at the bus stop ________ the bus arrived.
6. It is Friday evening. I will not go to bed _________ I finish watching
my favourite TV programme.
since
till/until
till/until
since
till/until
till/until
活动小结
通过以上的活动，我们学习了since、till和until引导的时间状语从句：since意思是“自从……以来”。一般情况下，从句谓语动词用一般过去时，而主句的谓语动词用__________；一般情况下till和________，但前者不如后者_______，其否定形式是_____________。
当堂检测见DCF课件
现在完成时
until
正式
not ... until/till
探究三
as soon as和whenever引导的时间状语从句
Presentation
Can you tell us how to use this two conjunctions
1. It began to rain as soon as I left the house.
2. I can read books whenever I want to.
as soon as意思是“一……就”。
We began to work as soon as we got there. 我们一到那里就开始工作。
He will visit you as soon as he gets there.他一到那里就会去拜访你。
whenever意思是“每当，任何时候”。
注意：whenever可以用every time替换。
He likes listening to music whenever he has time.每当他有时间的时候，他喜欢听音乐。
Simon is writing about David's love for basketball. Help Simon complete his sentences with as soon as or whenever.
David often goes to play basketball _________ school is over.
2. He watches the NBA __________ there is a game on TV.
3. _________ he talks about basketball, he gets excited.
4. ___________ he learnt that the NBA players would come to
China, he tried his best to get a ticket.
as soon as
whenever
Whenever
As soon as
David is writing about Yao Ming, his favourite basketball star. Help him complete his article with the correct conjunctions you have learnt in this unit.
Yao Ming was born in Shanghai in 1980. He got his first basketball (1) ______ he was only four years old, but he did not become serious about basketball (2)________ he was 12. Yao joined the Houston Rockets in 2002 and became the best Chinese player to ever play in the NBA. (3) ____________ he went to the USA, he knew little English, but he quickly learnt the language. The best moment in his career was in 2004—he scored 41 points in a game against the Atlanta Hawks.
When Yao Ming was living in the USA, he returned to China (4)_________ he was needed. He took part in the Olympics in 2004 and in 2008 as one of the Chinese athletes. (5)__________ he ended his basketball career, Yao has done more charity work, especially for poor Chinese teenagers.
Whenever
Since
when
till/until
When/Before
活动小结
通过以上的活动，我们学习了as soon as和whenever引导的时间状语从句：
as soon as意思是______________；
whenever意思是_______________，可用________替换。
一……就
每当；任何时候
every time
当堂检测
一、选词填空。
1. I didn't go out __________ he came back.
2. __________ we were talking, the teacher came in.
3. __________ my mother came in, I was playing computer games.
4. It has been four years __________ my sister lived in Beijing.
5. __________ you think it over, please let me know what you decide.
6. __________ I reach Canada, I will ring you up.
7. I finished my homework __________ I went to bed.
8. You can ask for help __________ you need it.
until
While
When
since
before, after, when, while, as soon as, whenever, since, until
After
As soon as
before
whenever
1. I came home. My mother was cooking dinner.
____________________________________________________
2. He worked in the office. He left school.
____________________________________________________
3. I go to bed. I wash my teeth.
____________________________________________________
4. I was doing my homework. My mother was cooking dinner at
seven yesterday.
_____________________________________________________
_____________________________________________________
二、合并句子。
用before，after，when或者while把两个句子连成一句。
When I came home, my mother was cooking dinner.
He worked in the office after he left school.
Before I go to bed, I wash my teeth.
I was doing my homework while my mother was cooking dinner at seven yesterday.
7. I see him. I will tell him the news.
_________________________________________________
8. May I come and talk with you It's convenient.
_________________________________________________
5. We won't work. Our teacher teaches us how to do it.
__________________________________________________
6. Mr Green has been a teacher. He came to China.
__________________________________________________
用since，until(till)把两个句子连成一句。
We won't work until ( till) our teacher teaches us how to do it.
Mr Green has been a teacher since he came to China.
As soon as I see him, I will tell him the news.
May I come and talk with you whenever it's convenient
用as soon as或者whenever把两个句子连成一句。
重点单词：
career, against
时间状语从句：
我们可以用before、after、when、_______、_______、till、_______、as soon as和_________来引导时间状语从句；
before表示______一个特定时间，since表示从某一特定时间开始，whenever表示在___________。
Unit 4
Period 3
while
since
until
whenever
早于
任何时间