题目内容
14.The children have never done that before.(改为反意疑问句)The children have never done that before,havethey?
分析 --孩子们以前从来没有做过.
--孩子们以前从来没有这样做过,是吗?
解答 答案:have they 反意疑问句分为两个部分,要遵循:"前肯后否,前否后肯"的原则,never表示否定,故后面用肯定式,时态是现在完成时,have是助动词,故答案是 have they
点评 要熟记反意疑问句的结构,运用恰当的助动词,有系动词、情态动词和助动词的可以直接运用,如果没有必须根据时态、人称、单复数等方面找.
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