this is my sister对My sister提问。

this is my sister's skirt.对my sister 's 划线提问~

Whose skirt is this

Who is this girl?

这个女孩是谁?

This girl is my sister

这个女孩是我的妹妹（姐姐）

划线提问这种题型特点就是变成特殊疑问句，根据划线内容确定合适疑问词。本句是对my sister提问，对人提问用who，所以答案是Who is this?

提问有很多。比如:
What is her name?她叫什么名字？
What does she do?她是做什么的？
How old is she?她几岁了?

who is this? 这是谁? 礼貌点问 应该说 who is this lady? may I have the name of this lady?

对my sister提问应该是Who is this?

丅his iS my mother

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