资源简介

(共19张PPT)
年 级：九年级
学 科： 英语（人教版）
Unit 1 The Changing World
Section A 4a-4c
Past
Present
Li Rui's hometown —— Shaanxi Province
There used to be _____________.
There _____ lots of __________.
The roads ____________.
The town ________ (build) new roads.
People ___________ (plant) bushes and trees on the hills.
were rough
sandstorms
has built
have planted
Change
The roads __________.
are smooth
are
Everything ___________ (become) green now.
has become
green trees
图片来源于教材
Beijing ___________ (become) a big modern city.
Beijing
People lived in small old houses in the past.
Now there are many tall buildings in the city.
Changes in other places
has become
图片来源于网络
People took a traditional zipline to cross the Nu River many years ago.
Now people can cross the river more easily.
Yunnan
Highways and new roads ______ already ____________ (build) over the river .
have
been built
图片来源于网络
People’s housing conditions _______________ (improve) greatly.
Villagers lived in old houses in the mountains in the past.
China has changed greatly in many aspects over the past years.
Now they live in comfortable new flats.
have improved
图片来源于网络
Students have classes with modern technology.
Students studied in simple classrooms many years ago.
Most schools ________ _________ (introduce) modern teaching equipment (设备).
introduced
have
图片来源于网络
China _____ already ______ (build) a high-speed railway network.
Most people rode bikes to go out many years ago.
Most people choose to take trains to travel now.
has
built
图片来源于网络
People __________ (use) these tools for about a decade (十年).
People used to pay in cash.
People are used to paying by WeChat or Alipay.
have used
图片来源于网络
People lived in small old houses in the past.
Most people rode bikes to go out many years ago.
People used to pay in cash.
Now there are many tall buildings in the city.
Most people choose to take trains to travel now.
Now they live in comfortable new flats.
Beijing has become a big modern city.
China has already built a high-speed railway network.
People have used these tools for about a decade.
simple past tense
present perfect tense
simple present tense
People lived in small old houses in the past.
Most people rode bikes to go out many years ago.
People used to pay in cash.
Now there are many tall buildings in the city.
Most people choose to take trains to travel now.
Now they live in comfortable new flats.
Beijing has become a big modern city.
China has already built a high-speed railway network.
People have used these tools for about a decade.
simple past tense
present perfect tense
simple present tense
一般过去时表示过去某个时间或某一段时间内发生的动作或存在的状态。
now
Past
future
一般现在时表示经常性或习惯性发生的动作或状态，或描述一个客观事实。
now
Past
future
现在完成时表示过去发生或已经完成的动作对现在造成的影响或结果。或表示过去的动作或状态一直持续到现在，并有可能持续下去。
now
Past
future
影响或结果
People lived in small old houses in the past.
Most people rode bikes to go out many years ago.
People used to pay in cash.
Now there are many tall buildings in the city.
Most people choose to take trains to travel now.
Now they live in comfortable new flats.
Beijing has become a big modern city.
China has already built a high-speed railway network.
People have used these tools for about a decade.
simple past tense
present perfect tense
simple present tense
Can you find the time words in each sentence
... ago
/
now
now
now
/
in the past
already
for ...
一般过去时 一般现在时 现在完成时
yesterday系列
yesterday, yesterday morning,
the day before yesterday
last系列
last night, last week,
last month, last year ...
ago系列
two days ago, three years ago,
a long time ago ...
具体年/月/日
in 2000, in May, on Monday ...
其他
in the past, just now, when +句子
常用标志词
already，yet，
never，ever，
just，so far,
for+时间段,
since+过去的时间点/从句,
in/over the past 10 years,
...
now, usually, often
...
A: Your hometown is Guizhou, right What was it like in the past
B: Well, traveling there _________ (be) really difficult. Most roads _________ (be) just dirt tracks, and we _________ (have) to go over mountains to go out. It _________ (take) a whole day to reach another city.
A: That sounds terrible! So _________ it _________ (change) a lot
B: Yes, great changes _________ (take) place. The government________ already _________ (build) thousands of highways, many high bridges, and several tunnels through the mountains. Now you can go straight through the hills instead of going around them!
A: How has life changed for local people
B: It ___________ (become) much easier and more convenient. Now it only ______(take) a few hours to travel around, and everyone _________ (get) richer and happier than they once were.
A: That’s great to hear!
Complete the conversation with the correct forms of the verbs.
was
were
took
has
changed
have taken
has
built
has become
has got
Ask about the past
Describe the past
Ask about changes
Describe the changes
Ask about life now
Describe the results
Respond positively
How do they talk about the changes in their hometown
had
tunnel [ t nl]
n. 隧道
dirt n. 泥土；尘土
track n.小路
takes
Talk about how your hometown has changed over the past years.
Ask about the past
Describe the past
Ask about changes
Describe the changes
Ask about life now
Describe the results
Respond positively
A: What was your hometown like in the past
B: Well, ...
A: That sounds terrible! So has it changed a lot
B: Yes, great changes have taken place. The government / ...
A: How has life changed for local people
B: ...
A: That’s great to hear!
A: Hi, Wang Yu. What was your hometown Zhuji like in the past
B: Well, the streets were quite narrow, and there were only a few
small shops around.
A: So has it changed a lot
B: Yes, great changes have taken place. The government has
already built a new high-speed railway station and several large
shopping malls.
A: That’s so great! How has life changed for local people
B: It has become much more convenient. Now we can take the high-
speed railway to Hangzhou in just 20 minutes, and everyone has
got richer than they once were.
A: That’s so great to hear!
A sample conversation
Review the grammar of this lesson and know how to use different tenses in different contexts correctly.
Do some related exercises to consolidate.
Homework
Must do:
Ask your parents about more changes in your hometown.
Choose to do:
谢 谢 观 看！
Thanks!
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