为什么I had him arrange car这句话中用arrange而不用arranged?

为什么I had him arrange car这句话中用arrange而不用arranged? i had him arrange for a car.的意思是不是‘我让他去准备车子’. I had lost him . I kept looking at the man ,wodering where I had seen him before .为什么不用whether I had seen him 填空The secretary has had the travel agency____everything for the manager's trip.(arrange)答案是就是arrange,为什么? I asked him what had happened 为什么要用had happened 而不直接用happened I ___ him very well,but I haven't seen him this week.为什么用know不用had known i forget wheter i (have)seen him before.为什么不能用had? I had f_____ to make him angry. I have had business ______with him.(relative) The Attack had been the boundary,had I lost him it is years since i saw him（追加）it is years since i saw him为什么不说it is years since i has seen him而it was years since i had seen him 却可以 为什么he said,''did you see him last night变为he asked me whether i had seen him the night before为什么改成 whether i had seen ,had是怎么改的?seen是怎么改的 arrange arrange 英语过去分词的小问题有句话：have you met him?yes,i have just met him,i had never met him before.这段话我老觉得应该说：have you met him?yes,i have never met him before i had just met him.不对的话,为什么呢?我绕不过 If i ( ) more time,i would havegone with him.A had B had had 填哪一个. The minister had his secretaries _____ a press conference.A arrange B to arrange C arranging D arranged这条主要D是重点..为什么不选..不是有had something done的搭配吗..意思也行得通......