This is my sister.(改为一般疑问句)

问题描述:

This is my sister.(改为一般疑问句)

is This my sister

Is this your sister?

Is this your sister?

Is this my sister?

Is this my sister?
一转二调三问号.就是be动词提前(放在最前面)其他的不变,最后打问号.