It rains sometimes可以说It is sometimes rain

It rains sometimes可以说It is sometimes rain sometimes it rains 为什么填rains而不填rain? it rains sometimes sometimes it rains和it rains sometimes 是不是一样的? it,always,hot,is,summer,and,in,sometimes,rains, Sometimes it is___(rain)here 一、句型转换1.Sometimes it rains heavily.（改为同义句）There is sometimes the it often rains,sometimes it rains quiet______ Sometimes it rains heavily.可以改写成Sometimes there is___rain sometimes when it rains小提琴谱 it sometimes rains in my hometown 神秘园 sometimes when it rains