资源简介

(共25张PPT)
Unit 1 The Changing World
Section A What changes have taken place around you
课时3(4a-4c)
1. 掌握并正确运用词汇：course, digital, audio, dirt, track, wide, tunnel
2. 能区分一般过去时和现在完成时。
Let’s discuss.
1.When did the first smartphone appear on the market
The first smartphone, IBM Simon, appeared on the market in 1993.
2.How have smartphones changed our life
Smartphones have made our life more convenient. We can work, study, do shopping and make friends by smartphones. But now many people have become addicted to smartphones.
What are the tenses of the verbs in bold
simple past
present perfect
一般过去时和现在完成时的区别
① 句式结构不同
一般过去时 主语+ was/were+其他.
主语+动词的过去式+其他.
现在完成时 主语+have/has +动词的过去分词+其他.
I visited the museum yesterday. 我昨天参观了这家博物馆。
I have visited the museum before. 我以前参观过这家博物馆。
一般过去时 表示过去某个时间发生的事情或存在的状态，说话的侧重点在陈述过去发生的事情或存在的状态。
现在完成时 表示到说话时为止已经发生（不一定结束）或完成的动作或状态，强调造成的结果或对现在产生的影响。
一般过去时和现在完成时的区别
② 侧重点不同
I went to Beijing last month.
我上个月去过北京。
I have bought a new mobile phone.
我买了一部新手机。
I have been to Jingdezhen many times.
我去过景德镇很多次。
言下之意：我现在有新手机用了。
言下之意：我对景德镇比较熟悉。
一般过去时和现在完成时的区别
② 侧重点不同
一般过去时 通常与yesterday、last week、two years ago、just now、in 2022等具体的表示过去的时间状语连用。
现在完成时 通常与already、never、many times、so far、till now、recently、these days等表示频度或一段时间的状语连用。
一般过去时和现在完成时的区别
③ 时间状语不同
I went to the zoo last week.
上周我去了动物园。
My father bought that watch ten years ago.
我爸爸l0年前买了那块手表。
He has already finished his homework.
他已经完成了家庭作业。
I have never seen the film before.
我以前从没看过这部影片。
一般过去时和现在完成时的区别
③ 时间状语不同
Read the sentences and circle the verbs. Pay attention to the verb tenses.
4a
He became a good friend of your grandfather about 20 years ago. They haven’t seen each other for ages!
We used to have to travel far to see a doctor. Our village has just built a new hospital.
Many people used to work in big cities. Now, more of them have come back to live and work here.
Complete the conversation with the correct forms of the verbs in brackets.
4b
A: _____ you _____ (be) to the new library yet
B: No, I __________ (not know) there was a new library. When did it _____ (open)
A: It _______(open) last Friday. I _____(go) there with my grandpa on Saturday night.
B: _____ you _____(like) it
A: Of course! It’s the most high-tech library I _____ ever ______ (visit).
Have
been
didn’t know
open
opened
went
Did
like
have
visited
Complete the conversation with the correct forms of the verbs in brackets.
4b
B: Oh, what _____ you _____ (see) there
A: There are sections with books about science and Chinese culture, as well as a huge section with children’s books. I also _____ (read) some digital books on the computer. My grandpa _______ (listen) to some audio books because he can’t see well.
B: Cool! I _________ (bring) my little brother there tomorrow.
did
see
read
listened
will bring
There are sections with books about science and Chinese culture, as well as a huge section with children’s books. (教材P5 4b)
as well as 除……之外，也，还
as well as as well
含义 除……之外，也，还 也，还
位置 位于所连接的两个成分之间，不能位于句尾 通常位于句尾
用法 连接对等成分，在语义上通常强调其前面的信息（翻译时通常先译后面的，再译前面的） 无侧重，用于补充信息
【辨】 as well as与as well
There are sections with books about science and Chinese culture, as well as a huge section with children’s books. (教材P5 4b)
as well as 除……之外，也，还
It’s a good time for you to be with each other as well as having the enjoyable food.
这是你们品尝美味佳肴和相聚的好时光。
Reading more books can improve our English as well.
多读书也能提升我们的英语水平。
【辨】 as well as与as well
There are sections with books about science and Chinese culture, as well as a huge section with children’s books. (教材P5 4b)
as well as 除……之外，也，还
as well as连接两个并列成分作主语时，谓语动词应与其前面的主语保持人称和数的一致。
Tony as well as his friends is from England.
托尼还有他的朋友们都来自英格兰。
用法拓展
Complete the passage with the correct forms of the verbs in brackets. Why are local people richer and happier than before
4c
In the past, it _____ (be) difficult to travel in Guizhou. In many places, there used to ____ (be) no bridges to cross mountains and rivers, and most roads were just dirt tracks. This _____ (make) it difficult for locals to bring products to the market or to develop industry.
was
be
made
Complete the passage with the correct forms of the verbs in brackets. Why are local people richer and happier than before
4c
Now great changes _________ (take) place. The government ________ (build) thousands of kilometres of highways, railways, and wide roads. It has also built many high bridges and tunnels. A journey that used to _____ (take) a day now takes only a few hours. As a result, the lives of local people ____________ (improve). They are much richer and happier than they once _____ (be).
have taken
has built
take
have improved
were
... and most roads were just dirt tracks. (教材P5 4c)
dirt /d t/ n. 泥土；尘土（不可数）
Pack the dirt firmly round the plants.
将植物周围的土培实。
Little Tom is playing in the garden and his face and hands are covered with dirt.
小汤姆正在花园里玩，他的脸和手上全是泥。
dirt
n. 泥土；尘土
dirty
adj. 脏的
If you step on the dirt in the yard, your shoes will get dirty quickly.
如果你踩到院子里的泥土，你的鞋子会很快变脏。
This made it difficult for locals to bring products to the market or to develop industry. (教材P5 4c)
make it + adj. + for sb. + to do sth. 使做某事对某人来说
该句型中it是形式宾语，不可省略，真正的宾语是to do sth.。
Some useful apps made it convenient for me to live here.
一些有用的应用程序让我在这里的生活很方便。
Teamwork makes it possible for us to finish the task quickly.
团队合作使我们快速完成任务成为可能。
This made it difficult for locals to bring products to the market or to develop industry. (教材P5 4c)
make it + adj. + for sb. + to do sth. 使做某事对某人来说
We all consider it necessary for us to take notes in class.
我们都认为上课记笔记对我们来说很有必要。
有此用法的常见动词还有find、 think、consider等。
The government has built thousands of kilometres of highways, railways, and wide roads. (教材P5 4c)
反义词：narrow 狭窄的
wide /wide/ adj. 宽的；宽阔的
（表示道路、河流等）宽的
（表示距离）宽度为……的
The small path starts narrow and becomes wide from here.
这条小路一开始很窄，到这个地方就变宽了。
wide
（表示眼睛）睁大的
Her eyes were wide with wonder.
地惊讶地睁大了眼睛。
The river is more than three metres wide.
这条河宽3米多。
1. —Peter, did you play table tennis with your friends after school yesterday
—No, I didn’t. We _____ vegetables in our school garden.
A. water B. have watered
C. watered D. will water
一、选择填空
C
2. So far, more and more students _____ good learning habits by making plans.
A. develop B. have developed
C. developed D. will develop
一、选择填空
B
二、阅读短文，用括号中所给词的适当形式填空
There is a community park near my home. Five years ago, it 1._____ (be) just a small place with dry grass and no trees. People 2._________ (not like) to take a walk there at that time. Three years ago, the government 3._______ (plant) many trees and built a small lake in it. Since then, the park 4._________ (turn) into a beautiful place with fresh air. So far, my family and I 5._________ (spend) a lot of happy time there together.
was
didn’t like
planted
has turned
have spent
一般过去时：陈述过去发生的事情或存在的状态
现在完成时：强调造成的结果或对现在产生的影响
一般过去时：was/were或动词的过去式
现在完成时：have/has+动词的过去分词
一般过去时和现在完成时的区别
句式结构不同
一般过去时：具体的表示过去的时间状语
现在完成时：表示频度或一段时间的状语
侧重点不同
时间状语不同
1. 用一般过去时和现在完成时写几句句子，描述家乡近几年发生的变化，以及这些变化给你的生活带来的影响。
2. 将本课所学内容形成重点笔记。

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