怎样改英语简单句?这里有几题,(最好说一下怎么改）1.We didn't go out for a walk because it was raining.We didn't go out for a walk_____ _____ the rain.2.He was so excited that he couldn't go to sleep.He was _____ ____ ____ go to bed.3.I don't know when we will begin the work.I don't know ____ ____ ____the work.还有，复合句呢？怎么改？

1.because of
2.too excited to
3. when to begin
because it was raining,we didn't go out for a walk
So excited,he couldn't go to sleep
Not kowning, we will begin the work

1.We didn't go out for a walk (because of) the rain.
2.He was (too excited to) go to bed.
3.don't know when to start the work.

1.because of 后面接名词
2 too excited to 太兴奋了而不能
3.when to start

1.改写成：because of
2.too excited to
3. when to begin
这是改写句子的一道题。要求用另一种方式表达上句的意思。两个句子意思应该一样。

一般形式是疑问词加动词不定式.例如where to go
1.because of(后面加名词)
2.too excited to（too……to固定形式）
3.when to begin