【题目】David wakes up early in the morning.(改否定句)
David________ ________ ________ early in the morning.
【答案】doesn't wake up
【解析】
肯定句句意：戴维在早上醒得早。改成否定句后的句意是：戴维在早上醒得不早。否定句需要助动词和否定词not，因为主语David属于单三，所以助动词用单三形式does与主语保持一致. does not=doesn't. 否定句结构是：主语+doesn't +动词原形+其它句子成分。故答案为：①doesn't ②wake ③ up