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英语动词时态问题When Edison died,it was propoesd that the America pe

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英语动词时态问题
When Edison died,it was propoesd that the America people turn off all power in there homes,streets,and factories for several minutes in honor of this great man.
请问在这个句子中,turn为什么不用过去时?是因为turn前面省略了should吗?这里为什么可以省略should?
英语动词时态问题When Edison died,it was propoesd that the America pe
全句的关键在于propose这个词,表示提议.turn之前确实省略了should.此句为虚拟语气.注:
在与demand,order,propose,request,require,suggest,arrange,insist,command,desire,advocate,maintain,urge,direct,move,prefer,arrange,recommend等连用的宾语从句中,其谓语用“should + 动词原形”,should也可省略.