问题补充:
单选题Igotupearlythatmorning,butI_____sobecauseIhadnoworktodo.A.mustn’t have doneB.didn’t need to doC.needn’t have doneD.can’t have done
答案:
C解析needn’t have done表示“过去不必做而做了某事”,若表示“不必做某事(且实际上未做)”则用“didn’t / don’t / doesn’t need to.”
时间:2021-02-21 19:57:24
单选题Igotupearlythatmorning,butI_____sobecauseIhadnoworktodo.A.mustn’t have doneB.didn’t need to doC.needn’t have doneD.can’t have done
C解析needn’t have done表示“过去不必做而做了某事”,若表示“不必做某事(且实际上未做)”则用“didn’t / don’t / doesn’t need to.”