when能否与完成时使用,是否因when在当(即条件状语从句)和何时(即简单句)意思时使用情况不同?书中when在条件状语从句主句和从句中举例:1.When you have got enough points,a cloud will come down and carry you o

Question

when能否与完成时使用,是否因when在当(即条件状语从句)和何时(即简单句)意思时使用情况不同?
书中when在条件状语从句主句和从句中举例:
1.When you have got enough points,a cloud will come down and carry you off to a place you have never visited before.
2.The film had been on for ten minutes when we entered the cinema.
书中使用是否正确?那在简单句中呢?

Answer 1

书中应该是正确的,意为“当”.
教你一个技巧,主短从长（主句是一个短暂性动作,从句时一个延续性动作）用when,while,as皆可.主长从长用while,as.主长从短或主短从短用when,as.