Lesson 130 He can’t have been...他那时不可能......He must have been...他那时肯定是......
一.Look,listen and repeat.
看图听录音，然后练习。
1
Was he ill or tired?
He can’t have been ill.
He must have been tired.
2
Was it your new hat or your old one?
It can’t have been my new hat.It must have been my old one.
3
Was she Danish or Swedish?
She can’t have been Danish.She must have been Swedish.
4
Was he a dentist or a doctor?
He can’t have been a dentist.He must have been a doctor.
5
Was she forty or fifty?
She can’t have been forty.
She must have been fifty.
6
Was it the 20th or the 21st yesterday?
It can’t have been the 20th.
It must have been the 21st.
7
Was he the youngest or the oldest of all the children?
He can’t have been the youngest.
He must have been the oldest.
8
Was he reading or sleeping?
He can’t have been reading.
He must have been sleeping.
二.Written exercises书面练习
A Complete these sentences using had to or must have been.
完成以下句子,用had to 或must have been 填空。
Example:
He is very tired because he had to get up early this morning.
He didn’t get up early this morning.He must have been tired.
1.He didn’t come to work yesterday.He_must have been ill.
2.He didn’t come to the office this morning.He_had to stay at home.
3.I don’t think she was Austrian.She_must have been German.
4.I lost my pen so I _ had to buy a new one.
5.He forgot his case so he_had to return home.
6.She didn’t hear the phone.She_must have been sleeping.
B Write new sentences.
模仿例句改写以下句子。
Example：
I think she was Danish.(Swedish)
I don’t think she was.She can’t have been Danish.
She must have been Swedish.
1.I think they were Canadian.(Australian)
I don’t think they were.They can’t have been Canadian.
They must have been Australian.
2.I think she was Finnish.(Russian)
I don’t think she was.She can’t have been Finnish.
She must have been Russian.
3.I think they were Japanese.(Chinese)
I don’t think they were.They can’t have been Japanese.
They must have been Chinese.
4.I think they were butchers.(bakers)
I don’t think they were.They can’t have been butchers.
They must have been baker’s.
5.I think she was a dentist.(doctor)
I don’t think she was.She can’t have been a dentist.
She must have been a doctor.
6.I think he was a sales rep.(the boss)
I don’t think he was.He can’t have been a sales rep.
He must have been the boss.
7.I think she was seventeen.(twenty-one)
I don’t think she was.She can’t have been seventeen.
She must have been twenty-one.
8.I think they were five.(seven)
I don’t think they were.They can’t have been five.
They must have been seven.
9.I think he was seventy-six.(over eighty)
I don’t think he was.He can’t have been seventy-six.
He must have been over eighty.
10.I think she was fifty-five.(under fifty)
I don’t think she was.She can’t have been fifty-five.
She must have been under fifty.
11.I think it was the 17th yesterday.(16th)
I don’t think it was.It can’t have been the 17th yesterday.
It must have been the 16th yesterday.
12.I think it was Tuesday yesterday.(Wednesday)
I don’t think it was.It can’t have been Tuesday yesterday.
It must have been Wednesday yesterday.
13.I think it was the 19th yesterday.(20th)
I don’t think it was.It can’t have been the 19th yesterday.
It must have been the 20th yesterday.
14.I think it was cheap.(expensive)
I don’t think it was.It can’t have been cheap.
It must have been expensive.
15.I think it was easy.(difficult)
I don’t think it was.It can’t have been easy.
It must have been difficult.
16.I think she was old.(young)
I don’t think she was.She can’t have been old.
She must have been young.
17.I think he was ill.(tired)
I don’t think he was.He can’t have been ill.
He must have been tired.
18.I think they were listening to the radio.(watching television)
I don’t think they were.They can’t have been listening to the radio.
They must have been watching television.
19.I think she was retiring.(looking for a new job)
I don’t think she was.She can’t have been retiring.
She must have been looking for a new job.
20.I think they were sitting.(standing)
I don’t think they were.They can’t have been sitting.
They must have been standing.
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