"Lie down!"the boy said to his dog.改为同义句

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"Lie down!"the boy said to his dog.改为同义句
"Lie down!"the boy said to his dog.改为同义句

"Lie down!"the boy said to his dog.改为同义句
The boy ordered his dog to lie down.

The boy told his dog to lie down.

if 引导真实条件句的,主句用一般将来时态,从句用一般现在时态。
If it doesn't rain tomorrow ,we will go fishing .
when 引导的从句,后面是短暂性动词,就是通常是一般过去时态
eg :when I heard the news ,I felt very happy .
后面是延续...

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if 引导真实条件句的,主句用一般将来时态,从句用一般现在时态。
If it doesn't rain tomorrow ,we will go fishing .
when 引导的从句,后面是短暂性动词,就是通常是一般过去时态
eg :when I heard the news ,I felt very happy .
后面是延续性动词,通常是过去进行时态
eg :When I was listening to music ,the bell rang .
while :后面常用过去进行时态
eg :While he was singing ,somebody knocked at the door.

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