问题 选择题
Mr. Brown, a good friend of mine, __________ us but that he was short of money at the time.
A.would helpB.would have helped
C.had helpedD.helped
答案

B

but that 引导的从句表示假设条件,谓语用陈述条件。例如:But that he was prevented, he would have accomplished his design.

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