what ( )you( )(do)at two o'clock?when( )it( )(begin)to rain?
问题描述：
what ( )you( )(do)at two o'clock?when( )it( )(begin)to rain?
答
will do will begin? 或者 did do ,will begin
答
did do
did begin
答
were doing 下午两天你在做什么?过去进行时
did begin 雨是什么时候开始下的?一般过去时
答
were doing
did begin
在强调一个时间点时，应该用进行时态。