Unit 9 When was it invented?Section A（3a-4)period2

课件39张PPT。Unit 9
When was it invented?Section A
Period TwoObjectivesTo learn to understand and use passive voice (questions and statements)
To listen and speak about helpful inventions and annoying inventionsReviewWords and expressions bulb
light bulb
microwave
microwave ovenn. 电灯泡；电灯
电灯泡
n. 微波
微波炉A: When was…invented?
B: It was invented in…
A: Who was it invented by?
B: It was invented by…
A: What is the … used for?
B: The … is used for doing… ReviewWhat is it / are they used for?It’s an annoying invention.
Because it wakes me up when I’m sleeping. alarm clockI think computer is the most helpful invention.
Because it helps me search the information that I need. computerWhat do you think is the most helpful or annoying invention?3aPairworkMake a list of five helpful inventions and five annoying inventions.Helpful inventions:
vacuum cleaner, soundproof door and window, car, computer, fax machine
Annoying inventions:
air-conditioner, truck, telephone, junk food, ice cream oral practice
Sentence pattern:
What is this in the picture?
What is it used for?
Do you think it is helpful / annoying?A: What is this?
B: It is an alarm clock.
A: What is it used for?
B: It is used for waking people up in the morning.
A: Do you think it is annoying?
B: Sometimes, when I want to go on sleep.Dialogue 1:Dialogue 2:
A: What is this?
B: It is a light bulb.
A: What is it used for?
B: It is used for giving light.
A: Do you think it is helpful?
B: Yes, I think so. Because I always do
homework and read books in the
evening by its light.3bPairworkA: What do you think is the most
annoying invention?
B: I think the most annoying invention
is the air-conditioner.
A: Why is that?
B: Well, I feel uncomfortable in the
room with an air-conditioner.GroupworkWhat would you do if you are alone on
a tiny island?Imagine that you are alone on a tiny
island. Choose five inventions you would
like to have on the island with you. Tell
the group what you choose and why.A: I’d like to have some matches
because I could light a fire to keep
warm.
B: Yes, but that’s not going to help you
leave the island. I think it would be
better to have a cell phone.Dialogue 1:Dialogue 2:A: I’d like to have a telescope because
I could look far.
B: Yes, but that’s not going to help
you leave the island. I think it
would be better to have a signal lamp. GrammarThe passive voice
被动语态
语态是表示主语与谓语的关系的。如果主语是动作的执行者，动词要用主动语态；反之，如果主语是动作的承受者，动词就要使用被动语态。
被动语态谓语部分结构为助动词be + 过去分词。 各种句型的被动形式注意：这里 be 的形式决定了被动语态的时态，其后的过去分词没有变化。重点内容肯定句
主语 + be + 过去分词 + (by …)
否定句
主语+ be not +过去分词 +(by …)
一般疑问句
Be +主语+过去分词 + (by …)?
特殊疑问句
疑问词 + be +主语 + 过去分词 + (by …)?Maria bought the book last year. (主动句)
The book was bought by Maria last year.
When was the book bought by Maria?
What was bought by Maria last year?被动句：让我们看一看各种句型的主动语态变为被动语态时，到底发生了什么变化？do/doesis/am/are + donedidwill/
be going to dowas/were + donewill be donebe going to be doneS +
was/were
+doneS +
was/were
+not + doneWas /Were
+S + done?S + will not
be + doneS +
am/is/are
going to
be doneAm /Is/Are
+S + going to
be done?S +
am/is/are
not going to
be doneWill+ S
+done?S + will be
+doneLet the word fly“Come”在英语中是十分常用的单词，在口语中更离不开它。Come on, 让我们一起来看看come的用法吧！comeEasy come, easy go.
—Hazlitt易得者亦易失。——赫斯特 上面我们说了句come?on, 其实come?on用在口语中，有很多意义，可以根据语境而定。
a. Come?on! Don’t?feel?shy!
来吧，别害羞。 (劝人发言或演讲)
b. Come?on! It’s?getting?late.
快点，天要黑了。(催促他人)
c. Come?on! Shouted?the?boys.
加油! (用于比赛时，“加油”之意)
d. Come?on! This?way, please.
来！请走这边。(招呼别人) 大家还知道come?on其他的意思吗？come on
1. 跟着来 You'd better go now, and I'll come on later. 你最好现在就去,我随后就来。
2. 进展 How are things coming on? 情况怎么样?
3. 逐渐开始 Night is coming on. 夜幕徐徐降临。
4. 上演 This play is coming on again next month. 这出戏下月又要上演了。 Stop worrying about your problem. You’ll cross that bridge when you come to it. 试着翻译下面的英文，注意单词come的用法。别担心你的问题了。船到桥头自然直。Languages come easily to some people. 语言学习对有些人来说易如反掌。Come again? I didn't quite understand
what you said. 再说一遍好吗？你刚说的话我不明白。I came up with a good idea to that question. 对于那个问题我想到一个好主意。This is where the argument comes in. 这就是争议所在。I hope someone comes by and picks us up. 我希望有人经过然后让我们搭便车。Bob comes from an old family. 鲍勃出身于一个古老的家族。活学活用从上面给出的例句我们可以看到come
的含义很丰富，口语中更是随处可见
它的身影。与come相关的搭配非常丰富，大家想一想与come相关的搭配或口语表达，选择几个进行造句或对话
练习。Grammar FocusReviewQuiz用所给单词的适当形式填空。
What do you think is _____________
(useful) one of the three?
2. This machine ______ (use) to make
noodles.
3. I think the computer is a great ________
(invent).
4. Computers can be used for _________ (study) English.
5. A TV set gives people more opportunities _________ (enjoy) themselves.the most usefulis usedinventionstudyingto enjoy 1. Last weekend, Jack _______ to a
birthday party and he had a lot of fun.
(2010吉林长春)
A. invite B. was invited
C. invited D. is invited实战中考2. —Look, what an old palace! It looks so
great! —Yeah, it ______ nearly 800 years ago.
(2010 吉林省通化市)
A. was building?? ? B. was built?? ??? ??? ?
C. has built?? ??? ??? ? D. is built
3. Liu Xiang _______ by his coach to train
regularly. (2010天津)
A. advised B. advises
C. was advised D. be advised4. Last month a new law _____ in China
to stop people from smoking in public
places. (2010 江苏省盐城市) A. is passed?? ??? ??? ? B. passes?? ??? ??? ?
C. had passed?? ? D. was passed
5. —Susan, why are you still here? They
are all ready to start. —I’m sorry, but I _____ when to leave.
(2010 山西省) A. don’t tell??? B. didn’t well????
C. wasn’t toldPreviewTo preview the words describe how food tastes
To preview the history of some foodHomeworkWrite a short passage about five inventions what you chose and why.