虚拟语气Themillionsofcalculationsinvolved,hadtheybeendonebyhand,allpracticalvaluebythetimetheywerefinished.A)hadlostC)wouldhavelostB)wouldloseD)shouldhavelost应该选哪项.

Question

虚拟语气
The millions of calculations involved,had they been done by hand,_____ all practical value by the time they were finished.
A) had lost C) would have lost
B) would lose D) should have lost
应该选哪项.

Answer 1

【C】
这句话的虚拟从句被主句用逗号隔开,had they been done by hand是与过去发生的事实相反的假设,主句要用虚拟语气,且有by the time这个时间状语,主句要用完成时态.
正确答案为C,题目译文为：如果用手工计算的话,那些成千上万的演算等完成以后就已失去了其实用价值