I will go to church every month on the day of 1st and 15th.
(注：go to the church 意为去教堂（仅仅是到教堂去,不一定祈祷）；
而go to church 则意为去教堂做礼拜,所以这里只要用go to church 就可以表达“去教堂祷告”的意思了~）
希望可以帮到你~^^