题目内容
3.I think he has a ruler.(改为否定句)Idon't think hehas a ruler.
分析 --我认为他有一把尺子.
--我不认为他有一把尺子.
解答 答案:don't;has.考查否定句.句意"--我认为他有一把尺子.--我不认为他有一把尺子.",宾语从句的否定转移,主句的谓语动词是think,并且主句的主语是第一人称而且为一般现在时,从句的否定词一般要转移到主句上.实义动词前加don't.第二个空从句主语是he,谓语用第三人称单数has.答案是don't;has.
点评 本题考查否定句.通常是在be动词,情态动词后加not.一般现在时态,主语不是第三人称单数用don't,主语是第三人称单数用doesn't.一般过去时态用didn't.还有其它用法需要牢记.
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