now 这里用法?I had left it on a chair beside the door and now it wasn't there.为什么now 可以用在过去式?这里的now是什么词性,

now 这里用法?I had left it on a chair beside the door and now it wasn't there.为什么now 可以用在过去式?这里的now是什么词性, 英语语法:As soon as I got home,I found I____my jacket on the playground首先,这里为什么要用had left呢?用left不行吗?还有,可以说说这里found的用法吗? leave和put用法新概念英语第二册18课中有句话：After I had had lunch at a village pub,I looked for my bag.I had left it on a chair beside the door and now it wasn't there!其中left it 可以用put it After i had had lunch at a village pub,这里的两个had是什么用法 I have been working in this factory for about 20 years and seldom []so tired as now选择 A I have left B I had left C have I left D had I left I not once had left we have thirty minutes left now.在这里,left是怎么回事? when I locked the door,I realized I ( ) my key at home.这里填 left 还是 had left ,或者二者均可为什么? I have been living in the United States for twenty years,but seldom ___so longly as now.A have I left B I had felt C I have felt D had I left I see him every now and then,but not often.这里的every是什么用法? Hardly……when 的用法如Hardly had I left home when it began to rain. Who ____(take away) my book?I left it here just now.这里面写什么,为什 求分析句子 as 在这里的用法 ,原文：News organizations quoted officials as saying Mr.Mubarak had left the capital and traveled abroad. 英语时态,现在完成时和过去完成时的用法After i ---dinner,I left home with my bag for school.A had B have had C had had D was having为什么不选 C 而选 B I left mine at home.为什么这里要用left fill up这里的用法we always had sandwiches , partly, i suspect, because the bread filled you up cheaply. 这里的fill up是什么用法呢 I had left it on a chair beside the door我想问 door前面为什么要加the 而不是a?After I had had lunch at a village pub, I looked for my bag. I had left it on a chair beside the door and now it wasn't there! As I was looking for it, the land Yesterday,I had Mike (repair)my bike .Now it is OK.为什么这里用repair不应该用repaired吗?