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what 's the matter with her?does she have a earache?she does

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what 's the matter with her?does she have a earache?she does have a earache,she has a headache.
she,her ,have,has,的变化规则?
what 's the matter with her?does she have a earache?she does
she 第三人称 主格形式; her 宾格形式; have 是在主语是 第一人称单复数,第二人称单复数,第三人称复数时 用,即 I have,we have,you(你) have,you(你们) have,they have; has 是在主语是第三人称单数时用,即 he/she/it has
1.with 是介词 介词后+宾格
2和4.一个基本简单句的结构是 主语 + 谓语.如果是肯定句 She(主语) has(谓语) an earache/headache.变疑问句时 助动词提前,因为是第三人称单数时主语,所以用 does ,之后谓语has 变have,最终句子就是 does she have an earache?
3.she does have...这句是强调句,用助动词 do 表示她确实有,因主语是she第三人称单数 所以用 does