为什么说If I had know that you were coming,I would have picked you up at the airport.是与过去相反?为什么说 If I had know that you were coming,I would have picked you up at the airport.是与过去相反?可以改成 If I knew that you w

为什么说If I had know that you were coming,I would have picked you up at the airport.是与过去相反?为什么说 If I had know that you were coming,I would have picked you up at the airport.是与过去相反?可以改成 If I knew that you w If I (had know) how to sing the song,I would have joined you that day.为什么不是knew if从句的用法I don't know if liuyang_________(赢得)the game为什么用win或will win 或have won或had won Twenty people had already left .I knew that my turn had come.为什么不能说I know that my tuen hadTwenty people had already left .I knew that my turn had come.为什么不能说I know that my tuen had come是不是说前句是过去完成时 所 关于虚拟语气.I have told my friend that if I_______ he was in hot water,i would go and help him out.A:knew B:had known C:should know D:will know您认为答案选什么?为什么?书上的答案是选择A，说因为主句使用：would do some 英语初高中衔接题一道Did you know any English before you arrived in Washington?Yes ,I did .I ___English for two years when I was in middle school.A had learnedB have learned C had been learning D learned打得好有加分2.--I'm afraid if th If.I.Had.You if i had my if后不加能加or not 课本上说不能,但一个外国人说i don't know if you are studying or not,为什么不是说的，是写下来的 英语翻译Let me know if you would like to do a catch up session,as I have one AM opening [next Weds,May 28th,at 10:30].是不是说如果我愿意的话可以28号去见他是吗? If you had any reason you’d know I never want to see you again. I wanted to know if he ___A.had come B.will come (1/2)If you do this you will be happy,I will pretend to know nothing th have had done与had have done区别——，I'd have told you.A.If I would have known B.If I had have known C.Had I known D.Should I know But I don't know if I think too much.为什么要把 if 改成whether? 含I don't know 的几个宾语从句问题I don't know ___.答案是where my class teacher lives now为什么不能是where my class teacher is living nowI don't know ___.答案是how well I did in the exam为什么不能是if I had passed the exam Do you know where I can exchange the money? 这是宾语从句还是地点状语从句?I will go where work conditions are difficult.这又是什么?是宾语从句还是地点状语从句? She seems as if she had done a great th If I Had Eyes 歌词