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Module 12 Unit 3 Language in use
【學習目標】
一、掌握情態動詞 must, can, could 表推測。
二、掌握祈使句的用法。
【學習過程】
一、根據句意及首字母補全單詞
1. K_________ money in a safe place.
2. We played basketball i_________ because it rained.
3. I'll hear a footstep on the s__________.
4. Earthquake is very c____________ in Japan.
5. Many earthquakes can cause a lot of d__________.
6. They c____________ people from the beach.
二、選用方框中的介詞完成句子

1. People are trying to clear the rocks _____ the roads.
2. She learnt __________ underwater earthquake.
3. They cleared people ______ the beach just minutes before a huge wave reached the land.
4. I met my friend Tom _______ my way home.
5. Our parents are proud _______ us.
6. A ten-year-old girl saved about one hundred other tourists in 2004_________ warning them that a huge ocean wave was coming across the sea.
【課堂導學】
一、情態動詞must, can, could 表示推測
情態動詞can, could 表示“能夠，可以”等意義,can, could 還表示對現在或將來的推測。意為“會，可能”。
1、can 表示推測時，往往用于否定句和疑問句。用于疑問句時，can 比could 表示的“可能性”要大；用于否定句時，can’t 表示“不可能”。
例如：You can’t be serious! 你不是認真的吧！
2、could 則可用于肯定句、否定句和疑問句，表示某事有可能發生或可能是事實
例如: He could be in pain. 他可能很疼。
Can/Could this be true 這有可能是真的嗎？
3、情態動詞must 也可以表示猜測，意思為“一定、準是”，通常只能用于肯定句。
例如：Betty, you must know! 貝蒂，你肯定知道！
辨析：
（1）Who sent the present Can it be your brother 是誰送來的禮物啊？會是你哥哥嗎？（詢問可能性）
（2）It must be your brother. 肯定是你哥哥。（語氣強烈，表示非常肯定）
（3）It can’t be my brother. His still in France. 不可能是我哥哥，他還在法國。（表示不肯能）
二、祈使句表達說話人對對方的叮囑、勸告、希望、禁止、建議、請求或命令等。祈使句一般以動詞原形開頭，無時態和數的變化。常見的句型如下：
1、動詞原形構成的祈使句
此類祈使句暗含的主語是you, 但通常省略。祈使句的句首或句末有時加please, 還可以加上稱呼語，用逗號與句子主體隔開。例如：
Have a nice day! 祝你度過美好的一天！
Come this way, please. 請走這邊。
Please be quiet, boys! 男孩們，請安靜！
Make sure he’s warm. 確保他不受涼。
祈使句否定形式往往在句首加上do not (don’t ) 或never。例如：
Don’t use the lift. 不要使用電梯。
Never be late again! 再也不要遲到了！
2、 let’s 構成的祈使句
這類祈使句往往用于提出建議，例如：
Let’s spend this weekend in the countryside. 這周我們到鄉下度周末吧。
祈使句否定形式是當祈使句表示邀請或建議(Let’s…) 時，則在Let’s與 do之間加not。
例如：Let’s not hurry. 我們不要太急。
3、無動詞祈使句
在請求、命令和口號中，常用無動詞祈使句，它實際上是省略了動詞，從而使祈使句更簡潔有力。
例如：Just a minute, please! 請稍等！
This way, please! 請走這邊！
祈使句否定形式是句首加not。 例如：Not there! 不是那兒!
【課堂練習】
一、單項選擇（語法專練）
( ) 1. --- Look at the boy running on the ground. Is it Davis
--- It ____ be him. I saw him go to the teacher’s office just now.
A. must B. can’t C. could D. might
( ) 2. Her doctor said, “________ work so hard”
A. Stop B. Don’t C. Can’t D. No
( ) 3. ________ in bed. It’s bad for your eyes.
A. Not to read B. Don’t read C. Don’t to read D. Not read
( ) 4. ________ when you cross the road.
A. Do care B. Care C. Be careful D. To be careful
( ) 5. ________ your child. We’ll look after him.
A. Not to worry about B. Don’t worry about
C. Not worry for D. Don’t worry with
( )6. —Do you believe what he says 　—Yes，it __________ be true.
A. can B. could C. need D. has to
( ) 7. The book on the teacher’s desk _____yours. Your name seems to be on it.
A. maybe B. must be C. may is D. has to be
( ) 8. Li Ying ____________ be here now as she went to Beijing three days ago.
A can’t B needn’t C mustn’t D may not
( ) 9. ---The lake is said to be dry. Is that true ---It ________.Look, some kids are swimming in it.
A. must be true. B. can’t be true C. may not be true D. can be true
( ) 10. ---David, is that man your head teacher
---It _____ be him. He’s the tallest in our school.
A. mustn’t B. can’t C. needn’t D. won’t
【課后練習】
一、用所給單詞的適當形式填空
1. The earth can rise and fall beneath the building without ______________ (shake) it.
2. _________ (luck), my mum was at home.
3. People must stay inside to keep away from _______ (fall) rocks.
4. Do you keep them __________ (warmly).
5. Don’t move them to a ____________(comfortably) place。
二、根據要求完成句子
1. The government is warning people about an earthquake. (劃線部分提問)
________ _________ the government _________
2. The children didn’t go to the playground because it rained. (同義句轉換)
The children didn’t go to the playground _________ ________ rain.
3. There is something wrong with the radio. (改為否定句)
There _____ ____________ wrong with the radio.
4. She went to London by air yesterday. （劃線部分提問）
______ ______ she ______ to London yesterday？
5. Let’s go swimming.(改為否定句)
Let’s _______ ___________ swimming.
三. 閱讀理解
When some plates of the earth move suddenly, an earthquake happens. Many earthquakes begin under the sea. Earthquakes may happen anywhere on the earth. They often happen near the mountains.
　　During an earthquake, the shakings make rocks rise suddenly and even crack (斷裂) open. Houses fall, people are killed or hurt, and sometimes the whole villages or cities are destroyed.
　　Can we do something to keep ourselves safe from earthquakes Scientists have studied earthquakes and make maps that show the “earthquake belts”. In areas (地區) in these belts, it’s possible for earthquakes to happen. In these areas we should build strong houses to fight against earthquakes.
　　In the future, scientists will be able to tell when and where an earthquake will be before they happen. They can also tell people what to do and how to do it.
1. A large number of earthquakes often happens _____.
A. in the area B. on land
C. at night D. next to mountains
2. The reason for an earthquake is _______.
A. the result of rock plate sudden movement
B. that there are so many plates on the earth
C. that the sea is too deep
D. rocks’ cracking open
3. A map showing the earthquake belts will tell people ______.
A. what kind of houses to build
B. what kind of houses can stay up in an earthquake
C. where earthquake may happen
D. how to keep themselves safe during an earthquake
4. In the future we’ll be no longer so afraid of earthquakes ______.
A. with the help of scientists’ exact prediction (預報)
B. because of a map showing the “earthquake belts”
C. because we can guess the date and place of earthquakes
D. as scientists know what to do and how to do it
5. Choose the best title for the passage.
A. An Earthquake B. A Scientist and an Earthquake
C. How to Fight Against Earthquake
D. Earthquakes Today and Tomorrow
四、作文。
請以你的切身經歷就這個問題What should we do when a big fire happens 展開作文，字數60詞左右。
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