when he ( )the door ,he found his keys were nowhere.A opened B would opened C was to opened为什么A不可以 不是时间状语从句中用一般时代替将来时么 还有为什么B不可以啊

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whenhe()thedoor,hefoundhiskeyswerenowhere.AopenedBwouldopenedCwastoopened为什么A不可以不是时间状语从句中用一般时代替将来时么还

when he ( )the door ,he found his keys were nowhere.A opened B would opened C was to opened为什么A不可以 不是时间状语从句中用一般时代替将来时么 还有为什么B不可以啊
when he ( )the door ,he found his keys were nowhere.
A opened B would opened C was to opened
为什么A不可以 不是时间状语从句中用一般时代替将来时么 还有为什么B不可以啊

when he ( )the door ,he found his keys were nowhere.A opened B would opened C was to opened为什么A不可以 不是时间状语从句中用一般时代替将来时么 还有为什么B不可以啊
be to do sth 正要做什么
would do 愿意做什么
们还没开,不能用A

翻译 正当他要打开门,他发现他找不到钥匙。
注意那个 要 字,表示将来做的,现在没有做。
A是过去时,表示已经开了门
B 时间状语从句是不要情态动词 will can 之类的吧。。。