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1、你想表达 "妈妈做饭时，爸爸在修电脑"，怎么说？
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2、你想询问 "昨晚 8 点他在做什么"，怎么说？
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3、你想描述 "地震发生时我正在上课"，怎么说？
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4、 beat、the、wind、against、windows、the、strong（.）
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5、power、out、went、the、dinner、we、having、while、were（.）
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6、tornado、hit、were、we、hiding、when、the、safe、in、room（.）
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7、while、were、sleeping、rain、the、cats、and、dogs、rained（.）
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8、doing、was、what、at、you、8、last、night（?）
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9、仿写句子：当暴风雨来临时，我们正在超市购物。（storm、come、shop、supermarket）
We in the supermarket when the .
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10、They were not doing chores at that time.（改为肯定句）
They chores at that time.
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11、She was reading a book. Her brother called her.（用 when 合并句子）
She was reading a book her brother called her.
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12、We were watching TV when the power went out.（改为同义句）
we were watching TV, the power went out.
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13、He was playing basketball at 4 yesterday afternoon.（对划线部分提问）
he at 4 yesterday afternoon?
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14、 They were talking happily the rain started suddenly. （when/while）
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15、 the storm came, we were having a picnic in the park. （when/while）
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16、 The bell rang the teacher was giving a lesson. （when/while）
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17、 my mother was cooking, I was cleaning my room. （when/while）
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18、 I was walking home I met my old friend.（when/while）
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19、 选词填空
power、tornado、soundly、beat、hide、while
(1)、The hit the small town and destroyed many houses.(2)、We had to in the safe room because of the strong storm.(3)、The rain was heavily against the roof all night.(4)、There was a cut last night, so we used candles.(5)、She slept after a long day of hard work.(6)、I was doing my homework my sister was listening to music. -
20、____ the boys were playing football, it suddenly began to rain.A、When B、While C、As soon as