作业帮___at the door ,i'v hardly rung the bell ____ the door opened.为什么用standing ,before?
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___at the door ,i'v hardly rung the bell ____ the door opened.为什么用standing ,before?
___at the door ,i'v hardly rung the bell ____ the door opened.为什么用standing ,before?
___at the door ,i'v hardly rung the bell ____ the door opened.为什么用standing ,before?
1）standing 是属于现在分词.语法规定,如果动词要做主语,不能用原形,只能用ing形式或不定式（to do）,这里不能用不定式是因为不定式表示目的,而这里表示当时的状态就是正在站在门口,所以用ing形式.
2）hardly .when/ before 是固定搭配.翻译成中文就是“一.就.”按门铃在开门之前,主句用过去完成时；开门在后,所以从句用过去式.用时间状语before作为连词也是适合语法的.
Standing at the door, I had hardly rung the bell before / when the door opened.
standing 现在分词作伴随状语
hardly ....when/ before 表示一....就...
站在门口，我刚一按门铃，门就开了。
___at the door ,i'v hardly rung the bell ____ the door opened.为什么用standing ,before?
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