句型转换

问题描述:

句型转换
对划线部分提问,划线部分是(twice)Mr and Mrs White have been to the West Lake twice.

原句的意思是.White先生和White女士曾经去过西湖两次.
所以应该用 How many times 来提问
所以问句应该是:
How many times have Mr and Mrs White been to the West Lake?