题目内容
7.The Australians have already written down the story.(改为否定句)The Australianshaven't written down the storyyet.
分析 澳大利亚人已经写下这个故事了.
否定句:澳大利亚人还没写下这个故事了.
解答 答案:haven't,yet.
原句是一个肯定句,谓语动词是have written,这是由have+过去分词构成的谓语,其中have是助动词,所以要用其否定式haven't+过去分词来构成否定式,又因为在句末还有一个空,所以要用yet来填空,yet的意思是"也"经常用于否定句中,综上所述,故填haven't,yet.
点评 首先要掌握否定句的经常构成方法,然后结合具体的题目,就可以确定正确答案.
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