The baby couldn't stop ____(laugh)while her mothe___(sing)to her.请说明原因!

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The baby couldn't stop ____(laugh)while her mothe___(sing)to her.请说明原因!

The baby couldn't stop ____(laugh)while her mothe___(sing)to her.请说明原因!
The baby couldn't stop ____(laugh)while her mothe___(sing)to her.请说明原因!

The baby couldn't stop ____(laugh)while her mothe___(sing)to her.请说明原因!
laughing 就是 stop doing 停下来正在做的事情
was singing 这就是 while 引导的时间状语从句,表示正在
句意:妈妈唱歌的时候,小婴儿停止不了大笑

laughing 【can't help doing:不禁

was singing 【从句用过去进行时,表示过去某个时间正在发生的动作。

laughing,were singing

laughing sangwhy?stop doing sth, 停下来做正在做的事,couldn't stop 是过去式,后边的状语从句也要用过去式请问,什么是状语从句,还没学,讲简单一点吧像when,while等引导的时间状语从句,时态必须与主语从句保持一致。when后边的是时间状语从句,前边的句子是主语从句。 当然也有结果状语从句...条件状语从句......

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laughing sang

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laughing
sang