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8.许多学生在昨天的会议上受到了表扬。( a number of)

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9.前天，我碰巧在街上遇到了我的一位大学同学。(happen)

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10.爷爷坐在沙发上，高兴地给孩子们讲着故事。(-ing形式作伴随状语)

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四

was walking along; when; heard

We were about to set off when it began to rain.

we were on the point of setting off when it began to rain.

I was about to telephone/ call him when his letter arrived.

I was on the point of telephoning him when his letter arrived.

I had just finished my test paper when the bell rang, announcing the exam was over.

三

①As we all know...

As is known to us, the earth moves around the sun.

As we all know/ As is known to us,, success comes from hard work.

As I explained on the phone②as is often the case.

③as is shown in the report

as we had expected

二、

一、

Everyone is fond of cycling to work.

Not everyone is fond of cycling to work.

=Everyone isn't fond of cycling to work.

Nobody is fond of cycling to work.

二、

All the houses were destroyed in the earthquake.

All the houses were not destroyed in the earthquake. =Not all houses were destroyed in the earthquake.

No house were destroyed in the earthquake.

三、

Both ( the) windows are open.

Both ( the) windows are not open.= Not both ( the) windows are open.

Neither( the) windows are open.

1.不是每本书都有教育意义。

2.并非人人都喜欢这本书。

3.昨晚发生了地震，但是没有人受伤。

一、

it is going to rain.

were

had been

The building shakes violently as if it were in an earthquake.

The girl listened as if she had been turned into a stone.

She looks as if she were ten years younger.

She loves the boy as if she were his mother.

1. happen to meet

2 too; to say

3. thought little/nothing of

4. right away/ at once

5.as if

6. at an end

7. was dug out

8. Thousands of

9. The number of

10. A number of trees

IV

1 The child burst out laughing. /The child burst into laughter.

2. Li Ming speaks as if he were American.

3. The wooden house was completely destroyed in the big fire.

4. She was too excited to fall asleep.

5.An old man was/is trapped in the lift.

6. The number of cars in my city is increasing fast these years.

7. The sun rises in the east and sets in the west.