suppose it rains tommorrow,what should we do?这是什么用法?从句是一般现在时,主句却用过去时?

求:Suppose it rains,what shall we _________（suppose）it rains,we will stay at home. suppose it rains tommorrow,what should we do?这是什么用法?从句是一般现在时,主句却用过去时? every time it rains it often rains 男歌手的,高潮是When it rains rains rains it rains rains rains找出来追加50,决不食言 sometimes it rains和it rains sometimes 是不是一样的? it rains cats and dogs. I never rains,it pours. Sometimes it rains q____ heavily. suppose it rains tommorrow,what should we do?假设明天下雨,我们该做什么?下雨是明天发生的动作不是用将来时吗?为什么用一般现在时? It always rains there in summer对always rains提问 sometimes it rains 为什么填rains而不填rain? but it rains sometimes.句中rains为何是复数? Tom wants to know if---have a picnic tomorrow.Yes,But if it---,we`ll visit the museum instead.A you will.rains B will you .rains Cyou.will rain it never rains,but it pours It never rains,it pours是什么含义 It never rains,it pours.意思