题目内容
15．We did something interesting last weekend．（变否定句）Wedidn't doanything interesting last weekend．
分析 --上周末我们做了一些有趣的事．
--上周末我们没有做任何有趣的事．
解答 答案：didn't；anything．考查否定句．根据last weekend上周末，可知是一般过去时态，含有实义动词did，变否定句在实义动词前加didn't，实义动词变原形do．something否定句中改为anything任何事情．答案是didn't；anything．
点评 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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