改錯：Youneedhavestudiedthatlatelastnight.Itwasharmfultoyo...

問題詳情：

改錯：You need have studied that late last night. It was harmful to your health.

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【回答】

need→needn't　由後面的句子可知，前一句句意為“昨天晚上你不必學到那麼晚”，因此應用need的否定形式。needn't have done “本不必做某事(而實際上做了)”。

知識點：虛擬語氣

題型：短文改錯