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问题: 不会的英语

( )it rain tomorrow ,we would have to put off the meeting .A were B should Cwould D will 为什么选B呀?

解答:

本题是虚拟条件句中的一种,表示与将来的事实相反。
条件从句可以用“should+ 动词原形”等,主句用“would (should/ might / could)+动词原形”。
例如:
If it should rain tomorrow, we would have to put off the meeting.
如果明天下雨的话,运动会将被推迟到下周五举行。
原题目是上面例句的倒装形式
Should it rain tomorrow,we would have to put off the meeting.
意义相同,只不过是倒装形式。