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(共25张PPT)
推测“三剑客”
must一定
can’t
一定不
may
也许
Lesson 129
Seventy miles an hour
New Words
1 wave [we v] v.招手2 track [tr k] n.跑道3 mile [ma l] n.英里4 overtake [ v 'te k](overtook;overtaken)v.从后面超越，超车5 speed limit [spi:d] 限速6 dream [dri:m] v.做梦，思想不集中7 sign [sa n] n.标记，牌子8 driving licence ['dra v 'la s ns] 驾驶执照9 charge [t ɑ:d ] v.罚款10 darling ['dɑ:l ] n.亲爱的(用作表示称呼)
track
overtake
dream
wave
charge
driving licence
mile
speed limit
sign
1英里=1.6km
Let’s read the text loudly
1. Why is the policeman waving
Because he wants Gary to stop.
2. How fast must Gary have been driving
He must have been driving at seventy miles an hour.
3. Has the policeman charged Gary this time
No, he has’t.
Find the answers to these questions
Language Points
wave to sb. 向某人招手（有事）
wave at sb. 和某人挥手（没事）
want sb. to sth.
插入语，征询见解或表达看法
must have done
“那时一定”
can’t have done
“那时一定不”
以...的速度
表对过去的推测
at a speed of...
1. 他当时一定很伤心。
2. Emma那时一定不在读书。
3. Tony一定已经离开了。
4. 你一定已经完成了家庭作业。
You must have finished your homework.
He must have been sad.
Emma can’t have been reading.
Tony must have left.
dream of doing sth. 梦想做某事
我时常梦想成为一名飞行员。
I often dream of becoming a pilot.
n. 梦，梦想
I have a dream.
tell sb. to do sth.
That’s why….“那就是为什么”
这就是我迟到的原因。
charge sb. +money 罚某人多少钱
charge him 100 yuan
had better do sth. 最好做某事
had better not do sth. 最好不要做某事
“听从劝告”
用括号中所给动词的适当形式填空
1.My friends _______ to me when they saw me. (wave)
2. The boy ___________ a house on the wall when the teacher came in.(draw)
3. The blue car had __________ the red one at ninety. (overtake)
4. You should ______his advice, because he is always right. (take)
5. My son can’t ____the truth. (tell)
6. I will ________be more careful next time. (certain)
waved
was drawing
overtaken
take
tell
certainly
翻译句子
1.让我看一看你的驾驶执照。
________________________________________
2.这就是我没有看见那牌子的原因。
________________________________________
3. 请不要超车。（overtake）
________________________________________
4. 你刚才一定是以每小时70英里的速度在开车。（drive at）
________________________________________
Let me have a look at your driving licence.
This was why I didn’t see the sign.
Please don’t overtake.
You must have been driving at seventy miles an hour.
Grammar
must + have been “那时一定是”；
表示对过去很肯定的猜测和推断：
他那时一定在家。
He must have been at home.
must + have been +doing
“那时一定正在做”；
表示对过去正在发生的推测：
他那时一定正在睡觉。
He must have been sleeping.
can’t have been (否定) “那时不可能是”
He can’t have been at home.
I think he can’t have been tired.
may have been 表示“那时可能是”
He may have been at home.
I think he may have been tired.
can’t have been doing “那时不可能正在”
I think he can’t have been sleeping.
may have been doing “那时可能正在”
I think he may have been sleeping.
用must have been 或can’t have been完成句子
1.He was in hospital yesterday. He _______________ill.
2. He ______________ at home. He has been on business for three weeks.
3. Bob _______________to Tokyo yet. He knows nothing about the place at all.
4. He didn’t answer the telephone, so I think he ______________busy at that time.
5. I have lost one of my gloves. It ________________ dropped somewhere.
6. They ________________ asleep because there was too much noise.
must have been
can’t have been
can’t have been
must have been
must have been
can’t have been
He didn’t come to work yesterday. He must have been ill.
He didn’t come to the office this morning. He had to stay at home.
I don’t think she was Austrian. She must have been German.
I lost my pen so I had to buy a new one.
He forgot his case so he had to return home.
She didn’t hear the phone. She must have been sleeping.
Lesson130
He can’t have been...
他那时不可能...
He must have been...
他那时肯定是...
Exercises

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