Does she have a sister 为什么要用have不用has?不是说he she it要用动词三单形式吗?

Does she have a computer? Does she have a computer?答：__________ Does she have a soccer ball?意思 Does she have a basketball?答句 does she have a conputer意思 Does she have a hat?怎么回答? Does she have a cat?否定怎么说? Does she have -------- --------- --------- -------- you does she have a pen 和 does she has a pen那个对? Does your mother have a sore nose?答句答句是 Yes,she does.还是Yes,it does. Does your mother have a _______?Yes,she does.She _____ at Huaxing Clothes Store. ( )your grandma ( ) a computer?yes,she ( )a.does.has.does b.does.have.does 选a,还是选b? 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? ( ) she ( ) an elder sister?A.Does have B.Do have C.Does has D.Do has computer,she ,a,have,does（?）连词成句 Does she have a big hands?(作肯定回答) Does she have a computer(变陈述句） Does she have a tennis racket作否定回答