在if it rains tomorrow,i will stay at home 这类句中,怎么判断哪个是主句,哪个是

在if it rains tomorrow,i will stay at home 这类句中,怎么判断哪个是主句,哪个是 英语中If的用法问题If it rains tomorrow , I will stay at home 这句话是对的, if it rains tomorrow,i will stay at home和if it rained,i woul 该否定句.If it rains tomorrow,we will stay home.怎么改? if it rained tomorrow .i should stay at home.if it rains ,i i will stay at home if it rains this afternoon.这里为什么用rains? if it rains tomorrow,we will stay at home ,we won't go to th They will stay at home () it rains tomorrow. ( )1.If it ,I at home.A.rain; stay B.rains; stay C.will rain Stay at home tomorrow if it is rains.为什么不能说成是Stay at home to If it _______ tomorrow,we will stay at home. He will stay at home if it ______(rain)tomorrow.