分析 --它們是我的書(shū).
--它們不是我的書(shū).
解答 答案:are not.考查否定句.根據(jù)含有be動(dòng)詞are的陳述句的否定句直接在are后加not,故答案是 are not.
點(diǎn)評(píng) 考查否定句.通常是在be動(dòng)詞,情態(tài)動(dòng)詞后加not.一般現(xiàn)在時(shí)態(tài),主語(yǔ)不是第三人稱(chēng)單數(shù)用don't,主語(yǔ)是第三人稱(chēng)單數(shù)用doesn't.一般過(guò)去時(shí)態(tài)用didn't.還有其它用法需要牢記.
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