(共20张PPT)
Module 3 Culture and history
Unit 6 Ancient stories
第3课时 Grammar
目录
01
02
课堂练习
语法聚焦
语法聚焦
现在完成时(二)
1. 用法
(1)since和for可与持续性动词的现在完成时连用,如live, keep, have等。
(2)短暂性动词的现在完成时不能与since和for连用,如buy, borrow, die, join等。
2. since与for的区别
(1)since+时间点 /+时间段+ago /+从句。如:
She has studied at this school since 2014. 她从2014年起就在这所学校学习。
She has studied at this school since 3 years ago. 她从3年前就开始在这所学校学习。
Great changes have taken place since you left. 自从你离开后,这里发生了巨大的改变。
(2)for+时间段。如:
She has studied at this school for 3 years. 她已经在这所学校学习了3年了。
3. 现在完成时与一般过去时的区别
(1)现在完成时用于描述过去发生且对现在产生影响的事情。如:
I have studied history for two years. 我已经学习历史两年了。
(2)一般过去时用于表示过去发生的动作或状态。如:
I had a history lesson yesterday. 我昨天上了一节历史课。
【拓展】
1. 常见的短暂性动词与持续性动词之间的转换:
buy→have; borrow→keep die→be dead
open→be open; close→be closed
join→be in begin / start→be on
go / leave→be away finish / stop / end→be over
arrive / get to / come / reach→be in
2. 两种时态常用的时间状语不同:
(1)现在完成时的时间状语:for, since, ever, never, yet, already, before, recently, so far …
(2)一般过去时的时间状语:yesterday, last week / year / month, one year ago, in 2001, just now …
课堂练习
一、用since或for填空,完成句子
1. I have studied at this school ____________ six years.
2. The concert has been on ____________ two minutes ago.
3. My grandparents have lived in the countryside ____________ almost twenty years.
4. My elder brother has been ill ____________ two weeks.
for
since
for
for
5. The old lady has been dead ____________ 2015.
6. He has worked ____________ eight hours.
7. We have been good friends _________ we were children.
8. My sister has learnt German ____________ three years.
9. The city has changed a lot ____________ I left here.
10. Li Ming has lived in Guangzhou ____________ last term.
since
for
since
for
since
since
二、选择填空
( )1. Over the past few months,Chinese COVID vaccines(疫苗)________ in many other
countries.(2021 黄石)
A.have arrived B. arrived
C. will arrive D. had arrived
A
( )2. China ________ great achievements in science and technology since 1978.(2021 贺州)
A. makes B. made
C. has made D. is made
C
( )3. Last weekend, David ________ a visit to his grandparents in the countryside. (2021 上海)
A. pays B. paid
C. will pay D. has paid
B
( )4. —It is reported that the First Flight Ceremony of Heze Mudan Airport was held on April 2nd, 2021.
—Yes. Great changes ________ in my hometown since I left home. (2021 菏泽)
A. have taken place B. were taken place
C. took place
A
( )5. —I saw Alice walk into that building just now.
—Oh,it' s our new city museum. It ____________ to the public for a month. (2021 齐齐哈尔)
A. has been opened
B. has been open
C. has opened
B
三、语法填空
There lives a farmer called Smith. He 1.____________ (work) here since he was young. Maggie, Smith' s friend, is
2. ______ farmer too.
One day, Maggie succeeded in 3. ____________(plant)a new kind of apple tree. So she invited him 4. ____________(visit)her farm. Soon, Smith went to the farm and met
has worked
a
planting
to visit
Maggie. They had lunch together and talked under the apple tree. Before Smith 5. ______ (leave), Maggie gave him a young apple tree. Smith felt very 6. ________(happiness). When he got home, he planted it in a small pot (盆)and put it in a corner. He did like this 7. _________ he didn' t want anyone to see it. But 8.___________ sunlight, the tree soon died.
left
happy
because
without
Later, Maggie asked him why he planted the tree in such a poor place. “What' s the 9. ____________(different) ” the farmer said angrily. “If I planted it near the road, strangers would steal the fruit. If I planted it in my field, my neighbours would come and steal 10. ______(it)fruit.”
difference
its
“Yes,” said Maggie, “but at least someone could enjoy the fruit. Now you not only got nothing, but also destroyed (毁掉)a good apple tree.”
THANKS!