你好!因为主语Milk是一个第三人称单数,当主语为第三人称单数he,she, it等时,实义动词要变为相应的第三称单数;当主语为非第三人称单数I, you(你), we,you(你们) they时,实义动词要用动词的原形.而在变否定句和疑问句时,不能直接在动词上变,而是要借助另一类动词:助动词do、does. (1)肯定句: ① I have a blue book. ② He has a brother. ③ She wants to be a teacher. ④ They like to play basketball. (2)否定句:主语+don’t/doesn’t+动词原形.其中do/does为助动词,是来帮助实义动词构成否定或疑问句的,但加了do/does后,其后面的动词必须用动词原形. ① I have a blue book.(变为否定句)→I don’t have a blue book. ② He has a brother. (变为否定句)→He doesn’t have ③ She wants to be a teacher. (变为否定句)→She doesn’t want to be a teacher. ④ They like to play basketball. (变为否定句)→They don’t like to play basketball. (3)一般疑问句:Do/Does +主语+动词原形+其他?句中加了do/does后,其后面的动词还是必须用动词原形. ① I have a blue book.(变为一般疑问句)→Do you have a blue book? ② He has a brother. (变为一般疑问句)→Does he have a brother? ③ My brother does his homework before supper. (变为一般疑问句) →Does your brother do his homework before supper? ④ She wants to be a teacher. (变为一般疑问句)→Does she want to be a teacher? ⑤ They like to play basketball. (变为一般疑问句)→Do they like to play basketball? (4)特殊疑问句:特殊疑问词+一般疑问句? ① Your sister likes English best because it’s interesting. (对划线部分提问) →Why does your sister like English best?
求问what does Mike have中的do为什么加es
1个回答
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