(共21张PPT)
Grammar:
Adverbial clauses of time (when)
used to/did not use to
When I was eight, I got a book about stars.
When something happened in some specific time, we will use adverbial clauses of time.
时间状语从句:表示动作发生在某一特定时间
when 时间状语从句
When we use the conjunction when to link two clauses, we tell people that the two actions happen at (the same time/ different times).
Work out the rule
We can use the conjunction when to form an adverbial clause of time. It links two clauses into one sentence.
我们可以用连接词when来构成时间状语从句。它把两个从句连接成一个句子。
【总结】
1. 当我们使用连接词When来连接两个从句时,表示这两个动作同时发生。
Adverbial clause of time (when)
【总结】
When we arrived, the sky went dark.
The sky went dark when we arrived.
Adverbial clause of time
从句
Main clause主句
Adverbial clause of time
从句
Main clause主句
2. when引导的时间状语从句,可位于句首,也可位于句末。
3. 当when引导的时间状语从句位于主句之前时,句中要加逗号
Adverbial clause of time (when)
1. When the bell rings, he gets into the classroom.
2. When you were out, Jack called in.
3. I will tell her the news when I meet her.
Read the sentence and summarize the rules of tense.
【总结】
1.表示现在的动作,主句和从句同用现在时态(主现从现) ;
2.表示过去的动作,主句和从句同用过去时态(主过从过) ;
3.表示将来的动作,主句用一般将来时,从句用一般现在时(主将从现)
一般情况下,主句与从句时态一致,特殊情况下,主将从现。
Adverbial clause of time (when)
Use the correct forms to fill in the blanks.
1. She always ______( work) hard when she is at school.
2. He likes to listen to the music when he _____ (do) his homework.
3. When I ____ (be) at the age of five, I ______ (like) playing toy cars.
4. Chen Na _______ (be) a computer engineer when she grows up.
5. When I was young, I usually ______ (go) outside with my mum on clear night.
works
does
was
liked
will be
主将从现
went
主过从过
主现从现
主过从过
主现从现
Adverbial clause of time (when)
Adverbial clause of time (when)
Match the clauses in column A with those in column B to make complete sentences with when.
Adverbial clause of time (when)
1.She always brings a present when she visits her friends.
When she visits her friends, she always brings a present.
2.He sits on the floor when he watches TV.
When he watches TV, he sits on the floor.
3.He stayed in bed when he was ill.
When he was ill, he stayed in bed.
4.She takes a basket when she goes shopping.
When she goes shopping, she takes a basket.
N2版
When he was 8 years old, he started to learn English.
I lost my wallet when I walked in the park.
He will go to England when he is free.
Anna will go outside when her parents come back.
时间状语从句的连词还有:
before
after
while(当……时,通常接进行时)
as(当…时,强调一边…一边…)
as soon as (一……就……)
until (直到……才……)
Adverbial clause of time (when)
如:
I have breakfast at home before I go to school.
在我上学之前,我在家里吃早餐。
While my dad is reading, my mum is cooking.
我爸爸在看书时,我妈妈在做饭。
I fell asleep as soon as I lay in bed last night.
昨晚我一躺在床上就睡着了。
After he finished his homework, he read his story book.
他做完作业之后,就读他的故事书了。
I will wait until they arrive at the school gate.
我会一直等到他们来。
Adverbial clause of time (when)
went
is
liked was
saw
grow
comes
【总结】
Read the sentences and know more about “used to”
1.I used to go outside with my mum on clear night.
(过去常常外出,如今不外出)
2. I used to like bugs but now I don’t.
(过去喜欢昆虫,如今不喜欢)
3. I used to go to the theatre a lot.
(过去常常去剧院,如今不去)
1. used to do sth 表示____________________________________
“过去经常做某事”(现在不那么做了)
used to/did not use to
2. used to是一种情态动词,后接V.原形
I didn’t use to have much money.
I used to go outside with my mum on clear nights and look at the sky.
When did he dad use to take them for trips on his boat
【总结】
1.肯定式:used to do sth.过去常做某事
2.否定式: did not use to do sth./didn’t use to do sth. 过去不常做某事
3.疑问式:(wh-words) did sb. use to do sth.
Read the sentences and summarize the rules
used to/did not use to
be (not) used to doing sth.
I am used to wearing masks.
我习惯了戴口罩。
I am not used to the hot weather in Guangzhou.
我不习惯广州的炎热天气。
【总结】
1.be used to sth./doing sth.习惯做某事
2.be not used to sth.doing sth.不习惯做某事
拓展:包含use的其他短语
be (not) used to do sth.
这些化学物质被用于清洁水。
The chemicals are used to clean water.
Paper money is not used to pay as often as before.
纸币不像以前一样被经常用于支付。
【总结】
1.be used to do sth.被用于做某事
2.be not used to do sth.不被用于做某事
拓展:包含use的其他短语
Exercise Ⅰ
1. I bought some red wine. I was in Italy at that time.
(改为同义句)
_____ I was in Italy, I _______ some red wine.
2. She often went to school on foot in the past, but she doesn’t do it now.(改为同义句)
She ____ ____ go to school on foot in the past.
When
bought
used to
Exercise
3. I used to visit my grandparents every weekend.
(改为否定句)
I ______ ____ ____ visit my grandparents every weekend.
4. Tom used to play basketball with his classmates.
(改为一般疑问句)
____ Tom ____ ____ ____ basketball with his classmates
didn’t use to
Did use to play
Exercise
Exercise Ⅱ
1. 他过去不常看书,但现在看。
He _____ ____ ___ _____ books, but he does now.
2. 我爸爸过去常常吸烟,但他现在不吸了。
My father _____ ____ ______, but now he doesn’t.
didn’t use to read
used to smoke
Exercise
Exercise Ⅲ
( )1. Daisy ____ me with my English homework, but she doesn’t now.
A. used to helping B. is used to help
C. used to help D. uses to help
( )2. We will go to the park ____ the weather is fine.
A. after B. when C. before D. what
( )3. What do you want to be when you ____ up
A. will grow B. growing
C. grew D. grow
C
B
D
Exercise
( )4. When we ____ on holidays, we ____ a lot of beautiful photos.
A. are; took B. were; took
C. were; take D. will be; take
( )5. —____ Lucy ____ to eat a lot of food
— Yes, she did. But now she eats little to keep fit.
A. Did; use B. Does; use
C. Did; used D. Is; use
B
A
Exercise