the man would have been saved if a helicopter ___(be)availab
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the man would have been saved if a helicopter ___(be)available.空格处为什么填had been呢?主句不是过去完成时吗?那从句为什么也用过去完成时呢?为什么不再往后推一个时态呢?都快搞混了
if 引导的句子,主句若是现在完成时,从句则用过去完成时.主句have been 是现在完成时,则从句用过去完成时had been.
不知道这样解释楼主清楚了吗?
不知道这样解释楼主清楚了吗?
the man would have been saved if a helicopter ___(be)availab
The man would have been saved if a helicopter ______(be) ava
用正确的动词填空:The man would have been saved if a helicopter______
if it---,the crops would be saved.
1\ Much labor would have been saved if electronic computer (
if it should rain, the plant would be saved.
if ___ money with him,he would have been robbed
___(be)he not a disabled man,he would have had more promotio
If I had saved the effort ,would the pain be less
If I had saved the effort, would the pain be less?中文翻译是什么意思
___it rain,the crops would be saved.
____,george would have been a rich man.