(共23张PPT)
Unit 4 Growing up
Grammar
译林版九年级上册 英语
Lead-in
1. Squirrels save food before winter comes.
2. After the war started, lots of people lost their lives.
3. I was sleeping when it started to rain.
4. While Millie was watching TV, Andy came into the room.
5. My family have lived here since I was born.
6. You can ask for help whenever you need it.
1. Squirrels save food before winter comes.
2. After the war started, lots of people lost their lives.
3. I was sleeping when it started to rain.
4. While Millie was watching TV, Andy came into the room.
5. My family have lived here since I was born.
6. You can ask for help whenever you need it.
Adverbial clauses of time(时间状语从句)
时间连词(conjunctions of time)
till, until, as soon as…
before
after
when
while
before
after
when
do homework
wash the dishes
watch TV
have dinner
Presentation
earlier than a certain time
later than a certain time
at or during a certain time
during a certain time
A
I had dinner before I did my homework.
I watched TV after I did my homework.
I was doing my homework when it started to rain.
I was doing my homework while my mother was washing the dishes.
start to rain
past
future
/while
before
after
when/while
do homework
wash the dishes
watch TV
have dinner
Presentation
A
start to rain
Tip 1:
before/after 还可以用作介词。
e.g. We do morning exercises before 9 a.m.
我们9点前做早操。
They always have a rest after lunch.
他们总是在午饭后休息一下。
past
future
before
after
when
while
before
after
when/while
do homework
wash the dishes
watch TV
have dinner
Presentation
A
start to rain
Tip 2:
when引导的从句谓语动词可以是短暂性的,也可以是延续性的。while引导的从句谓语动词必须是延续性的。
e.g. The days get longer when spring comes.
春天到来时,白天变长。
While/When he was walking to the bus stop, he lost his wallet.
在他走向公交站时,丢了钱包。
past
future
before
after
when
while
before
after
when/while
do homework
wash the dishes
watch TV
have dinner
Presentation
A
start to rain
Tip 3:
在含有when和while的复合句中,若主句和从句的主语一致,且从句中有be动词,可省略主语和be动词,构成when/while doing的结构。
e.g. When (he is) in trouble, he always asks his teacher for help.
他遇到困难时,总是向老师求助。
While (I am) travelling, I like to buy some souvenirs.
旅游时我喜欢买纪念品。
past
future
before
after
when
while
Exercises
A
David is writing in his diary about one of his days. Help him combine his sentences using before, after, when or while. (P54)
I go jogging every morning. Then I have breakfast.
I go jogging every morning before I have breakfast.
I have breakfast after I go jogging every morning.
Before I have breakfast, I go jogging every morning.
After I go jogging every morning, I have breakfast.
Exercises
A
David is writing in his diary about one of his days. Help him combine his sentences using before, after, when or while. (P54)
2. I practised playing basketball for hours. I felt tired out.
I felt tired out after I practised playing basketball for hours.
After I practised playing basketball for hours, I felt tired out.
Exercises
A
David is writing in his diary about one of his days. Help him combine his sentences using before, after, when or while. (P54)
3. I met Peter. I was waiting at the bus stop.
I met Peter when/while I was waiting at the bus stop.
I was waiting at the bus stop when I met Peter.
When/while I was waiting at the bus stop, I met Peter.
When I met Peter, I was waiting at the bus stop.
( )
( )
Exercises
A
David is writing in his diary about one of his days. Help him combine his sentences using before, after, when or while. (P54)
4. I was watching TV. I received a call from my uncle.
I was watching TV when I received a call from my uncle.
I received a call from my uncle when/while I was watching TV.
When I received a call from my uncle, I was watching TV.
When/While I was watching TV, I received a call from my uncle.
( )
( )
Exercises
A
David is writing in his diary about one of his days. Help him combine his sentences using before, after, when or while. (P54)
5. I was ready to go to bed. My father came back from work.
I was ready to go to bed when my father came back from work.
My father came back from work when I was ready to go to bed.
When my father came back from work, I was ready to go to bed.
When I was ready to go to bed, my father came back from work.
Exercises
1. I love to listen to rock music ______ I am running.
A. while B. after C. since D. until
2. My cousin became a country doctor ______ he finished medical school.
A. before B. so that C. after D. so
3. You have to pass a test ______ you can get a license.
A. after B. before C. while D. until
4. —We can’t get on or off a bus ______ it is moving.
—You’re right.
A. unless B. before C. while D. until
A
C
B
C
Presentation
B
since
till/until
past
future
now
from a certain time in the past up to now
up to a certain time or an event
since
till/until
till/until
till/until
e.g. I have lived here since I was born.
自从我出生起就住在这儿。
You should walk till/until you see a white house.
你应该一直走直到你看见一座白色的房子。
Presentation
B
since
till/until
past
future
now
Tip 1:until比till更正式。
Tip 2:since, till, until也可用作介词。
Tip 3: 含有since的复合句,主句用现在完成时态,从
句用一般过去时态。
since
till/until
e.g. We have known each other since 2000.
自从2000年我们就认识了。
He has lived alone till/until now.
到现在他一直独自生活。
e.g. Mr Brown has been in Beijing since you left.
自从你离开,布朗先生就一直呆在北京。
Presentation
B
since
till/until
past
future
now
Tip 4: 含有till/until的复合句,若主句中的谓语动词是
短暂性动词,则该动词用否定形式,形成
“not…till/until”结构,意思是“直到…才…”
since
till/until
e.g. I didn’t go to bed till/until I finished my homework.
直到做完作业我才上床睡觉。
Exercises
B
Here are more sentences from David’s diary entry. Complete his sentences with since, till or until. (P55)
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.
since
till/until
till/until
Exercises
B
Here are more sentences from David’s diary entry. Complete his sentences with since, till or until. (P55)
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
Exercises
B
1. I didn’t understand my teacher’s great love ______ I became a
teacher myself.
A. if B. until C. since D. though
2. He’s tried his best to catch up ______ he came here .
A. after B. when C. until D. since
3. Love your parents while they are alive. Don’t wait ______ it is too
late.
A. until B. though C. because D. unless
4. Time waits for no man. But some people won’t realize the
importance of time ______ it’s gone.
A. unless B. since C. when D. until
B
D
A
D
e.g. As soon as I arrive in Canada, I will call you.
我一到加拿大,就给你打电话。
Whenever he met us, he smiled at us.
他每次遇见我们,都向我们微笑。
=Every time he met us, he smiled at us.
Presentation
C
as soon as
whenever
when something happens, or a short time after something has happened
every time
Exercises
C1
Whenever
as soon as
whenever
Simon is writing about David’s love for basketball. Help Simon complete his sentences with as soon as or whenever.
1. 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
Exercises
C2
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. (P56)
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.
when
till/until
before, after, when, while, since, till/until, as soon as, whenever
Exercises
C2
(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.
When/Before
whenever
Since
Homework
1. Remember the usage of conjunctions of time.
2. Finish the exercises.
3. Preview Integrated skills.