【題目】His uncle _______ have a ball.

A. doesn’t B. don’t C. isn’t D. aren’t

【答案】A

【解析】

句意:他叔叔沒有一只球。由題干可知謂語動(dòng)詞have是實(shí)義動(dòng)詞,所以變否定句要借助于助動(dòng)詞do的適當(dāng)形式,而不能用be動(dòng)詞,所以排除C、D選項(xiàng);do用于主語是第一人稱、第二人稱和第三人稱復(fù)數(shù)形式的句子中,does用于主語是第三人稱單數(shù)的句子中。本題中主語是第三人稱單數(shù)His uncle,所以助動(dòng)詞選用does,其否定式在does后直接加not,縮寫為doesn't;故答案選A。

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