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求解一道关于“oughtto”英语语法题(注意看答句最后一句,此题有严重争议,求大师解)-Oughtthepostmantodeliverthelettersnow?-No,he.Hecanhavebreakfastfirstandthebeginhiswork.A、oughtn'tB、needn'tC

题目详情
求解一道关于“ought to ”英语语法题(注意看答句最后一句,此题有严重争议,求大师解)
-Ought the postman to deliver the letters now?
-No,he _____.He can have breakfast first and the begin his work.
A、oughtn't B、needn't C、shouldn't D、ought not to
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答案和解析
依据题干看,选项D满足要求.
首先,问句中用ought to+动词原形的结构,那么回到也应该对应:ought to的某种形式;
其次,选项A与D完全不同,一个有to一个没有to;我们也可以把D项改为:oughtn't to;
再次,问句用ought to,回答一般不用should的某种形式;尽管should=ought to.
选项B意为“没必要”,与语境、语意均不符.
希望能对你有帮助.