I visit my grandparents twice a year 就画线部分提问,画线部分是twice a ye

How often do you visit my grandparents?
对频率提问用How often.
Does he sometimes watch TV at home on weekends?
三单用Does,动词的三单就可以去掉
Jim doesn’t do homework in the evening.
改否定句在does后+not,后面还要+原形（do）.
ererplag没见过,我才疏学浅.How often does Frank...sports?
How many apples do you eat erery day?
对数词提问用How many