When was your mother born Do you know (合并成一句)Do you know () your mother () ()?

问题描述:

When was your mother born Do you know (合并成一句)
Do you know () your mother () ()?

Do you know (when) your mother (was) (born)? 这是一个宾语从句,从句要用陈述语序.

When was your mother born Do you know (合并成一句)
Do you know (when) your mother (was) (born)?