主将从现 we must do something before it's too late.按照主将从现,后面不是应该用it will be too late?

主将从现 we must do something before it's too late.按照主将从现,后面不是应该用it will be too late? 什么是'主将从现“ 什么是主将从现 主将从现是什么意思? 什么是主将从现 英语主将从现 主将从现 主将从现是什么意思不要和我说那些专用术语,我是完全听不懂的或者用这几道题来讲一讲也行（/是or的意思）We must do something before it's/it will be too lateI'm going to bed when I finish/I will finish my work 初中英语主将从现一道选择题If they go to the Great Wall,________ if it _______rain tomorrow.A.so we will,doesn'tB.so do we,doesn'tC.so will we,doesn'tD.so will we,won't 哪些词是用主将从现 什么叫做“主将从现” 主将从现的意思 we must do some cleaning now 改否定句 some要变 any吗 If it rains tomorrow,we don't go hiking.不是主将从现吗 what would you do if you saw the traffic accident ,不是主将从现么 if主将从现和虚拟语气的不同What should we do if it _____ tomorrow?A.should snow B.would snow C.snow D.will snow 如果有snows可以选吗?我觉得if主将从现和虚拟语气都表示如果,都没什么区别啊?If only I _____ my watch If it____tomorrow,what would we do?第一,如果根据if主将从现原则,可用rains；第二,根据虚拟语气原则,可用were to rain 或would、should rain.这样都对么? —It's such a long way .What shall we do --- you __take my car if you want.A will B may 选哪个不是主将从现啊