初中時間狀語從句語法及練習(xí)(編輯修改稿)
2025-04-20 12:35 本頁面
【文章內(nèi)容簡介】 I didn39。t manage to do it until you had explained how. 直到你教我后，我才會做。 區(qū)別：1）until可用于句首，而till通常不用于句首?！ ±纾篣ntil you told me, I had heard nothing of what happened. 直到你告訴我以前，出了什么事我一點也不知道。 3）until when 疑問句中，until要放在句首。例如： Until when are you staying? 你呆到什么時候？ Until next Monday. 呆到下周一?！? 注意：否定句可用另外兩種句式表示。 4）Not until…在句首，主句用倒裝?！? 例如：Not until the early years of the 19th century did man know what heat is. 直到19 世紀(jì)初，人類才知道熱為何物。 Not until I began to work did I realize how much time I had wasted. 直到工作，才認識到我已蹉跎了許多歲月。 5）It is not until… that…. 例如：It was not until I began to work that I realized how much time I had wasted. （四）巧辨before和until在日常英語教學(xué)中，我們遇到學(xué)生問這樣的一些問題： will spend six hours at his desk____he finishes his position. bike hit the tree____I could get off. knocked at the door for more than five minutes____Mrs white answered it. was____yesterday____be____the secret. until；that；knew ?。粀hen；knew before；that；found ??；that；didn39。t find 怎樣才能清楚地解釋其選擇的原因，這就涉及到until與before的區(qū)別問題。 實際上，只要我們把握住兩者使用時本身的含義及主句動詞是終止性的，還是延續(xù)性的，肯定式，還是否定式兩大點，就能容易地解決這類問題?，F(xiàn)詳細闡明如下： 一、在下列情況下，兩者可互換用，但含義略有不同。before表示“在……之前”的意思，強 調(diào)時間先后關(guān)系；而until表示“直到……才”的意思，主句是肯定句則表示主句動作的終 止時間；主句是否定句則強調(diào)主句動作的起始時間。 。常見的動詞是open,start,leave,arrive,finish, stop等。例如： (1)The noise of the street didn39。t stop until/before it was midnight. (2)The children won39。t e back until/before it is dark. (3)I didn39。t leave the lovely boy until/before his mother came home. 、延續(xù)性謂語詞，這類動詞用stand,stay,talk,be,wait等。例如： (1)He lived with his parents until/before he graduated from school. (2)I will wait until/before he es to my help. (3)I shall stay heer until/before you e back. 二、在下列情況下，用before不用until。 、終止性謂語動詞，只用before。例： (1)He fell asleep before I could take off his clothes. (2)We arrived there before it atarted to rain. (3)The holiday came to the end befor I knew it. (4)He almost knocked me down before he saw me. ，只用before，常伴有時間段狀語或時間段暗示。例： (1)It was quite some time before he found the elephant at all. (2)We had walked a long way before we found some water. (3)We had sailed for two days before we saw the land. (4)The fire lasted about four hours before the firefighters could countrol it. (5)It was midnight before my brother came home. (6)It was three months before they met again. ，就發(fā)生主句謂語動作，只用before。常譯為“未及”，“不”或“不等
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