Question

I would have gone to visit him in the hospital had it been at all possible,

but I was fullyoccupiedthe whole of last week.
请问为什么用was呢？
“had it been at all possible”是什么意思？谢谢。

Answer 1

翻译：我本来想到医院看你，但是整个上周我都在茫茫碌碌，如果真正可能的话（可以去看你）。
这是虚拟语气的句子，表示对过去的虚拟，说明这件事情已经过去，表示遗憾呢
had it been at all possible 省略 if it had been possible at all.
at all 是加强语气的短语
but I was fully occupied the whole of last week. be occupied表示忙碌的状态，
occupied是形容词，忙碌的相当于busy；last week 这是过去的时间，所以用过去时
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