如题所述
要看主句时态是否是现在完成时态，有has就用has；主句中有助动词，考虑用助动词。
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第1个回答 2011-09-30
当has表示“有”(也可用does)，或者当助动词表示现在完成时，用has;
当has不表示“有”的意思时，用助动词does;
如：He has a sister, hasn't(或doesn't) he?
has表示“有”
He has finished the work, hasn't he?
现在完成时
She has a walk after supper, doesn't she?
has不表示“有”
当has不表示“有”的意思时，用助动词does;
如：He has a sister, hasn't(或doesn't) he?
has表示“有”
He has finished the work, hasn't he?
现在完成时
She has a walk after supper, doesn't she?
has不表示“有”
