作业帮before vs时态 句子一条
来源：学生作业帮 编辑：作业帮 分类：综合作业 时间：2024/05/10 07:41:24
before vs时态 句子一条
Everyone was frisked before getting on the plane.
这是个成句喔,是正确的没错.
根据时间的推算,如果是这样：
Everyone had been frisked before he got on the plane.
这样也对
那么、
如果把before的从句换成非谓语：
Everyone had been frisked before getting on the plane.
这样okay么?
Everyone was frisked before getting on the plane.
这是个成句喔,是正确的没错.
根据时间的推算,如果是这样：
Everyone had been frisked before he got on the plane.
这样也对
那么、
如果把before的从句换成非谓语：
Everyone had been frisked before getting on the plane.
这样okay么?
当然可以,语法上没错,这里getting是动名词,相当于主语+动词+宾语.但是这里是过去完成时,即在过去某一动作发生前已经完成,所以这里还是用第一种比较好点.