题目内容
18．I had already had supper when you came last night．（否定句）Ihadn't have supper when you came last nightyet．
分析 昨晚你来的时候我已经吃完饭了．
昨晚你来的时候我还没有吃饭．
解答 答案：hadn't，yet．句中是过去完成时had+过去分词，否定是在had后加上not，already放在肯定句中，否定句用yet放句末．故答案是hadn't，yet．
点评 含有be动词，情态动词或者助动词have/has的句子转化成否定时在其后面加上not，一般实意动词的否定式，通常应根据不同时态和人称在实意动词之前加don't，doesn't，didn't等．
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B．cinema
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D．supermarket
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B．￥56
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C．At 8p．m．on May 4th．
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 Milk：￥4/carton |  Lemons：￥2.2each |  Meat：￥22/kg |  Coke：￥4.6/bottl |
 Salt：￥3.5/bag |  Rice：￥40/bag |  Eggs：￥12/kg |  Biscuits：￥15.8/bo |
| Time：April 28th～May 3rd 8：30a．m．～9：30p．m． Special Offer：Any person who shops over fifty yuan can get a small gift． | |||
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B．cinema
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D．supermarket
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