问题描述：
关于虚拟条件句的一道英语题.
If calculations_____by Chinese Supercomputer Tianhe--1A for a second ,it would take thousands of years for one man to finish them by hand.
were done
如果不根据主句来判断.请问“If calculations_____by Chinese Supercomputer Tianhe--1A for a second ”这句为什么不是真实条件句?
If calculations_____by Chinese Supercomputer Tianhe--1A for a second ,it would take thousands of years for one man to finish them by hand.
were done
如果不根据主句来判断.请问“If calculations_____by Chinese Supercomputer Tianhe--1A for a second ”这句为什么不是真实条件句?
问题解答：
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