in+时间段,当用于将来时的时候,表示在.之后,用how soon 提问,当用于过去时的时候表示在.之内,用when
1过去将来时的构成(句型如下:)
肯定句:主语+be(was,were)going to+动词原形~.
否定句:主语+be(was,were)not going to+动词原形~.
疑问句:Be(Was,Were)+主语+going to+动词原形~?
肯定句:主语+would(should)+动词原形~.
否定句:主语+would(should)not+动词原形~.
疑问句:Would(Should)+主语+动词原形~?
仅供参考
I would cover the distance in five minutes when I went to school