If it rains tomorrow,we will stay indoors to have our training class句中的it 代表天是吧,天是单数所以后用rains?

翻译：what if it rains tomorrow? if it rains tomorrowIf it rains tomorrow 可不可以改成If it rainy tomorrow 做形容词、、? what will you do if it rains tomorrow同义What will you do if it rains tomorrow?（改为同义句）______ ______ it rains tomorrow? What will happen if it rains tomorrow 改为同义句 What shall we do if it rains tomorrow?是什么意思? if it rains tomorrow,if it will rain tomorrow?什么区别有什么区别,什么用法 we won't go to the mountains if it rains tomorrow为什么要用rains? Do you know ____?A.if it will rain tomorrow B.if it rains tomorrow那个正确啊?为什么? Stay at home tomorrow if it is rains.为什么不能说成是Stay at home tomorrow if it will rain. Even if it rains tomorrow,we'll start out.为什么用Even if if rains it we go to the park tomorrow won't 组成一个问句if rains it we go to the park tomorrow won't 组成一个问句----------------------------------------------------? If it ---tomorrow ,we will go to the Great WallA.isn;t rainB.doesn;t rainC.rains D.not rains If it ( ) tomorrow,we ( ) at home.A.will rain...will stay B.rains...will stay 该否定句.If it rains tomorrow,we will stay home.怎么改? 连词成句picnic,it,not,have,are,going,rains,the,we,if,tomorrow,to We don't know if it rains the day after tomorrow. if it rains tomorrow,we won't go fishing.Then how about going shopping _____? what will you do if it()tomorrow?A.rains B.will rain