This dress costs her 90 yuan.(改为一般疑问句)
问题描述：
This dress costs her 90 yuan.(改为一般疑问句)
答
Does this dress cost her 90 yuan？
一般疑问句只需将助动词提前即可
答
一般疑问句：
Does this dress cost her 90 yuan?
翻译：
这件裙子花费了它90元？
答
Does this dress cost her 90 yuan?
一般现在时,主语为单数第三人称,谓语是实义动词的句子,改成一般疑问句,在句前加Does,动词变为原形.