英语8.“We could have walked to the station as it was so near.”8.“We could have walked to the station as it was so near.”“Yes.A taxi _____at all necessary”A.wasn’t B.hadn’t been C.wouldn’t be D.won’t be为什么?

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英语8.“We could have walked to the station as it was so near.”8.“We could have walked to the station as it was so near.”“Yes.A taxi _____at all necessary”A.wasn’t B.hadn’t been C.wouldn’t be D.won’t be为什么?
英语8.“We could have walked to the station as it was so near.”
8.“We could have walked to the station as it was so near.”
“Yes.A taxi _____at all necessary”
A.wasn’t B.hadn’t been C.wouldn’t be D.won’t be
为什么?

英语8.“We could have walked to the station as it was so near.”8.“We could have walked to the station as it was so near.”“Yes.A taxi _____at all necessary”A.wasn’t B.hadn’t been C.wouldn’t be D.won’t be为什么?
第一句话的意思:路那么近,我们本该走到车站的.
could have done本来应该,与过去事实相反,要用could/should/would/might加上have done
第二句话的意思是:根本没有必要叫出租车.
因为的确没有必要,与过去事实没有相反关系,所以选A.

could have done表示本可以做却没有做
所以答句的时态应与问句相符,
B

选a

B
虚拟语气