I have had may holiday.的否定句为I haven't had may holiday.变否定句方法：主语+doesn't\don't+动词原形+宾语。一般现在时变否定句的规则：含有实义动词的句子,变否定句分两步.（1）如果主语是第三人称单数时,要在实义动词前加doesn't,后面的动词用原形.例:He eats an apple. 否定句:He doesn't eat an apple.
