【正文】 定義 ： 在復合句中由從句表示的狀語稱作狀語從句，它可以用來修飾謂語（包括非謂語動詞）、定語或狀語，或是整個句子。 準確掌握每一個連詞的含義是掌握狀語從句的關鍵。 同時要注意主從句的時態(tài)呼應。 狀語從句一般分為九大類 狀語從句類別 : 時間狀語從句 地點狀語從句 原因狀語從句 目的狀語從句 結果狀語從句 條件狀語從句 方式狀語從句 比較狀語從句 讓步狀語從句 ： 引導時間狀語從句的連詞有： when, while, as, the moment, before, after, till, until, since, as soon as 等。 請注意 when, while, as 的區(qū)別 When 當 …… 時候 , 通常指某一特定的時間點，主句與從句的動作同時發(fā)生。 When I opened the window, I saw him e up. When I have time , I will go to see you. When I came home, I met an old schoolmate of mine. He said he would tell her about it when he saw her. *注意： 在時間狀語從句中，主從句都是將來的動作或狀態(tài)時，習慣上主句用將來時，從句用一般現在時。 When 正在 …… 的時候，突然 … 。通常主句是進行時或 be about to 時，在翻譯的時候，when 可以譯成沒想到或突然。 I was walking along the street , when I met him. I was about to fall asleep when my sister came in. One evening, little Hans was sitting near the fire when he heard a loud knock at the door. When 當從句是進行時，主句是一般時，往往表示不滿。 Someone knocked at the door when I was having breakfast. When I was leaving the house, the postman arrived. When the children had gone to bed, she began to prepare her lessons. When=after While 在 …… 期間，往往指一段時間。 While we were in America, we saw him twice. While we were talking, he came in. Strike while the iron is hot. While 表示一種不滿情緒，意思是這邊在干某種重要的事，而另一邊在享受等。 We are cleaning the classroom while they are playing the football. The soldier faces the powder while the beauty powder the face. While I am washing the floor, you can be cleaning the windows. As 一邊 …… 一邊 , 隨著 She was doing her homework as she was listening to the music. As she grew older, she became more beautiful. As 當 …… 時，指一個動作緊接著一個動作發(fā)生，從句通常用進行時。 As I was going out, it began to rain. I saw Mary as she was going on the bus. As he was eating his breakfast, he heard someone knock at the door. Someone patted me on the shoulder as I was standing before the shop window. The moment 一 …… 就 …… =as soon as , immediately, Did you remember to give Mary the money you owed her? Yes, I gave her the moment I saw her. Not… until 直到 …… 才 He didn’t leave the office until he finished the work. =He left the office when he finished the work. Not …until 可以和 when 互換 Before 在 …… 之前 The passengers should arrive at the airport an hour before the flight departs. Did you work as a stewardess before you e to this pany? It was not long before I fot it all. (It was /will be …before… 是常用句型 ) He ran off before I could stop him. After 在 …… 之后 The customer left the ticket counter after he had a quarrel with the ticket agent. The plane took off after the air traffic controller gave clearance. Since 自從 ……, 通常主句用現在完成時 I have never been there again since I graduated from the university. The captain has traveled almost everywhere in the world since he became a pilot. It is just a week since we arrived here. (It is /has been… since… 是常用句型） As soon as 一 …… 就 …… Jack went to school as soon as he got well. I’ll ring you u