Unit 7 Know Our World Unit 7 Review课件+素材(45张PPT)

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名称 Unit 7 Know Our World Unit 7 Review课件+素材(45张PPT)
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更新时间 2022-03-19 22:00:18

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(共45张PPT)
八年级英语下(JJ)
教学课件
Unit 7 Know Our World
Unit Review
Lead in
Let's watch a video !
Grammar
现在完成时
一、现在完成时的基本结构
现在完成时由“助动词 have/has + 过去分词”构成,其基本句式结构为:
① 肯定句:主语 + have/has + 过去分词 + 其他.
I have seen this film.
② 否定句:主语 + have/has not + 过去分词 + 其他.
I have not seen this film.
③ 一般疑问句:Have/Has + 主语 + 过去分词 + 其他
肯定回答:Yes, 主语 + have/has. 否定回答:No, 主语 + haven't/hasn't.
—Have you seen the film —Yes, I have. / No, I haven't.
和主语一致
have not = haven't; has not = hasn't
have/has 常可缩略为 -'ve/-'s
二、过去分词的构成
1. 规则变化(与动词过去式规则一样,此类称作规则动词)
一般在词尾直接加 -ed 以不发音的e结尾的,加 -d 以“辅音字母+y”结尾的,改y为i加-ed 重读闭音节以一个辅音字母结尾的,双写这个辅音字母后加 -ed
work→worked slice→sliced study→studied stop→stopped
-ed 的读音规则:
① 在元音或浊辅音后读 [d],如 tried [tra d],lived [l vd]。
② 在清辅音后读 [t],如 worked [w kt],stopped [st pt]。
③ 在[t][d]后读[ d],如 mended [mend d],wanted [w nt d]。
2. 不规则变化(此类称作不规则动词,有很多)
原形(不定式) 过去式 过去分词
be was/were been
have had had
choose chose chosen
put put put
run ran run
参看课本P136-137 Irregular Verbs(不规则动词表) 三、现在完成时的用法
1. 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。常和 just(刚刚),already(已经),yet(还,仍然),ever(曾经),never(从未),before(以前),so far(到目前为止)等连用。
— Have you had your breakfast yet
— Yes, I have. I've just had it.
— Have you ever heard this song
— No. I've never heard it before.
Julia has collected over 100 beautiful hair clips so far.
现在完成时用法1:
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。
past
I had breakfast.
I'm not hungry now.
present
I have already had breakfast.
(早餐过去吃的,现在不饿。)
图示法表示
2. 现在完成时还可以表示过去某一时间开始并一直持续到现在的动作或状态,常与“for + 时间段”或“since + 时间点 / 从句”连用,这时要用延续性动词。
They have worked in this company for 30 years.
He has been in the army since 2016.
(错:He has joined the army since 2016.)
【特别提醒】如果要对 for 或 since 短语提问,疑问词用 how long。
— How long have you lived in this area
— For at least 10 years.
现在完成时用法2:
表示过去某一时间开始并一直持续到现在的动作或状态。
图示法表示
past
I moved here
in 1990.
I still live here.
present
I have lived here for 30 years.
(30年来一直生活在这里)
【拓展延伸】
部分非延续性动词(词组)和与之对应的延续性动词(词组)的表达。
非延续性动词(词组) 延续性动词(词组)
become be
borrow keep
buy have
get up be up
fall asleep be asleep
make friends be friends
finish be over
leave be away (from)
非延续性动词(词组) 延续性动词(词组)
open be open
close be closed
lose be lost
die be dead
join be a member of / be in
begin/start be on
come/go be here/there
turn on/off be on/off
have/has been to 表示“曾经去过某地”,暗含现在已不在那里了。后可接次数,如 once, twice, three times 等,表示“去过某地几次”,也可和 just,never,ever等连用。 My sister has been to Dalian twice. 我姐姐去过大连两次。
Have you ever been to the West Lake
你曾经去过西湖吗
have/has gone to 表示“去某地了”,暗含说话时该人不在现场。 — Where is Jim 吉姆在哪里
— He has gone to England.他去英国了。 (尚未回来)
四、have/has been to 与 have/has gone to 的区别
五、现在完成时 VS 一般过去时
现在完成时表示过去发生的某一动作对现在造成的影响或结果,强调的是现在的情况,因此不能和表示过去的时间状语连用。
I have already done my homework.(不能用last night等)
I've been to Paris before.(不能用last year等)
2.一般过去时只表示过去的动作和状态,与现在无关。可以和表示过去的时间状语连用。
I did my homework last night.
When did you go to Paris (when 一定不要和现在完成时连用)
3. 日常对话中通常两种时态配合使用,开始提到一件事做没做或发生过时用现在完成时,说起这件事具体情形时用一般过去时。
— Have you been to Japan
— Yes, I have. I went there last year.
— Who did you go with
— …
被动语态
语态是动词的一种形式, 用来表示主语和谓语之间的关系。主动语态表示主语是动作的执行者, 被动语态表示主语是动作的承受者。
一、被动语态的基本结构
a. The math teacher is respected by all his students.
数学老师被他所有的学生尊敬。
b. The truck was made in 1958.
这辆卡车制造于1958 年。
c. The meeting will be held in September.
会议将在九月举行。
d. My car is being repaired now.
现在我的车正在被修理。
e. The quality of our products has been greatly improved.
我们产品的质量已大大提高了。
f. The room must be kept clean.
房间必须保持干净。
二、被动语态的用法
(1)当动作的执行者不必或不易说出时,用被动语态。
The flowers are watered every morning.
(2)需要突出动作的承受者时,用被动语态。动作的执行者由by引出且置于谓语动词之后,也可省略。
The new teacher is liked by all the students.
(3)表示“据说,据报道,人们相信”等,常用“It is +过去分词+ that从句”句型。
It is believed that both of the chairs were repaired by him.
(4)文章的标题、广告、新闻等用语也常使用被动语态。
Teachers Wanted. (省略了are) 招聘老师。
三、不能使用被动语态的情况
(1)系动词get,turn,become,seem,look,sound,smell,taste,feel等后接形容词作表语时,用主动形式表示被动含义。
) That dog looks dangerous.
(2)动词need,want以及短语be worth 等后接动词-ing时,用主动形式表示被动含义。
My flowers need watering.
(3)某些表示主语质地特征的不及物动词,如write,wash,sell,read,clean,drive 等,它们的主语为物时,用主动形式表示被动含义。
This kind of skirt sells well here.
(4)不及物动词或词组没有被动结构,如:take place (发生),happen(发生),come out(发生),break out(爆发), appear(出现), disappear(消失),last(持续)等。
四、主动语态与被动语态的转化
注意事项:
(1)含双宾语的主动结构变被动结构时,不要忽略间接宾语前的介词。
We gave some flowers to Miss Gao on Teachers’ Day.
→ Some flowers were given to Miss Gao on Teachers’ Day.
(2)含有动词短语的主动结构变被动结构时,不要漏掉短语中的介词或副词。
We handed in our homework last Friday.
→ Our homework was handed in last Friday (by us).
(3)在含有使役动词make或感官动词(see, watch, notice, hear 等)的主动语态的句子中,这些词后常跟省略to的动词不定式,但是改为被动语态时则要把省去的to还原。
I saw him cross the road and enter the shop.
→ He was seen to cross the road and enter the shop (by me).
(4)含双宾语的主动结构变为被动结构时,既可将间接宾语转化为主语,也可将直接宾语转化为主语。若将间接宾语转化为主语,则保留直接宾语;若将直接宾语转化为主语,则保留间接宾语,且在被保留的间接宾语前加上介词to或for。
My mother gave me a pencil.
→ I was given a pencil by my mother.
→ A pencil was given to me by my mother.
Building Your Vocabulary 
I. Read the clues and complete the crossword using the words
from this unit.
DOWN
1. Please ________ for your exams, or you'll fail.
5. If you put your ________ in me, I will not let you down.
7. Do people in Britain ________ when they meet
prepare
trust
kiss
ACROSS
2. It is ________ to arrive at a party on time.
3. We go to school every day ________ weekends.
4. These plants float on the ________ of the lake.
6. There are many ________ that visit China every year.
polite
except
surface
tourists
Ⅱ. Fill in the blanks with the correct forms of the words in the box.
translate pronounce spell polite increase
1. The letter “k” in knife is not ____________.
2. The population of that country is __________ at about 6% per year.
3. It is difficult for me to ___________ this passage into Chinese.
4. Older people should be spoken to ________.
5. You've ________ my name wrong.
pronounced
increasing
translate
politely
spelt
Grammar in Use 
Ⅰ.Fill in the blanks using “have/has been” or “have/has gone”.
1. I ________ ________ a middle school student for over two years.
2. He ________ ________ to school, so you can visit him there.
3. We ________ ________ in college for about three months.
4. She ________ ________ to see Xiao Hong. Please call her later.
5. A: Where's Dad
B: He ________ ________ to Britain. He ________ ________ abroad several times.
have been
has gone
have been
has gone
has gone has been
Ⅱ. Fill in the blanks using the correct voice.
1. What language ___________(speak) in Canada
2. The stars can ______________(not see) in the daytime.
3. Planes, cars and trains __________(use) by business people for travelling.
4. Many tall buildings ____________(build) in our city next year.
5. This medicine should ___________(shake) before you take it.
is spoken
not be seen
are used
will be built
be shaken
6. These words could _______________(translate) by that girl.
7. Geography can ___________(learn) by travelling.
8. Our earth must ___________(treat) well.
9. It ________(say) that he has been to Antarctica.
10. Jim didn't come to the party because he ______________ (not invite).
be translated
be learned
be treated
is said
wasn't invited
Listening and Speaking 
Ⅰ. Listen to the passage and match.
Germans
Americans
Englishmen
Italians
will probably be 15 minutes early.
will be 15 minutes late.
should be allowed up to an hour.
will arrive on time.
Travelling to every part of the world is getting easier, but how well do we know and understand each other Here’s a simple test. Imagine you are planning to hold a meeting at four o’clock. What time should you expect your foreign business friends to arrive If they are Germans, they’ll arrive on time. If they are Americans, they’ll probably be 15 minutes early. If they are Englishmen, they’ll be 15 minutes late. You should allow up to an hour for the Italians.
listening material
Ⅱ. Work in groups. Discuss what you know about different countries around the world and the places you are most interested in.
Putting It All Together 
Ⅰ. Read the passage and answer the questions.
Asia
Asia is the largest continent in area and population. It covers more than 44 million square kilometres. There are more than forty countries in Asia. Some of them are China, India and Japan. China is the biggest country in area and population.
More than four billion people live in Asia. That's more than half of the world's population! Mount Qomolangma(or Mount Everest) is in the Himalayas. It is the highest mountain in the world. The Yangtze River (the Changjiang River) in China is the third longest river in the world.
1. Which is the biggest country in Asia
2. How many people live in Asia
3. What is the highest mountain
China is the biggest country in Asia.
More than four billion people live in Asia.
Mount Qomolangma is the highest mountain.
Ⅱ. Suppose you have a two -week holiday to travel. Make a plan and write a short passage.
Task tips:
Where are you going How are you going Who are you going with What are you going to do there
I have a two- week holiday. My parents and I want to go to Wuhu for my holiday. We will go there by train. We are going to go sightseeing and take some photos. Then we will visit Jiuzi Square and the Mirror Lake Park. Finally, we are going to enjoy some delicious food in the Food Street.
Self-Evaluation 
Find more examples from this unit. Then mark your stars.
Ⅰ. Talking about Contrast and Comparison
But body language is not the same in all cultures.
______________________________________________
______________________________________________
I can express contrast and comparison in English.
☆ ☆ ☆ ☆ ☆
Sometimes we describe the same thing in different ways or use different words.
Ⅱ. Present Perfect Tense
He has been to every continent except Antarctica.
She has gone to visit her.
_________________________________________
I know how to use the present perfect tense.
☆ ☆ ☆ ☆ ☆
Jenny and I have been to China twice.
Ⅲ. Passive Voice
These dry places are called deserts.
_____________________________________________
_____________________________________________
I know about the passive voice.
☆ ☆ ☆ ☆ ☆
It must be treated well for our children and for our children's children, too!
Start at home.
East we go.
Cross the ocean,
To Japan.
East We Go
Ocean east to
America's west.
Cross that country,
To Atlantic's coast.
Europe to Russia,
Then we are back home again.
Thank you!
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