before表示时间先后顺序地点或位置条件或前提 一、时间先后顺序 “before”最常见的用法是表示时间上的先后顺序,即某事发生在另一事之前。它常常与过去时态连用,用来描述过去发生的两个事件之间的时间关系。例如: * I had finished my homework before my parents came back. (在父母回来之前,我已经完成了作业。) 二、顺序或排列 除了表示时间上的先后顺序外,“before”还可以用来表示事物在空间或顺序上的排列。它通常用于描述事物的前后位置或顺序。例如: * Please write your name before your address. (请在你的地址前写上你的名字。) 三、地点或位置 在某些上下文中,“before”可以用来描述物体相对于另一物体的位置关系。这种情况下,“before”接近于“in front of”的意思。例如: * The cat sat before the fireplace. (猫坐在壁炉前。) 四、条件或前提 “before”也可以用于表示某个动作或事件发生的条件或前提。它通常与情态动词连用,表达某种必要条件。例如: * You must finish your report before you can go home. (你必须完成报告才能回家。) 新概念英语mp3 高中英语单词听力 新概念英语mp3下载 人教版初中英语mp3 五、与动词连用 在语法结构中,“before”经常与动词连用,构成时间状语从句。它引导的句子描述主句动作发生之前的情况。例如: * We need to book the tickets before we can travel. (我们需要先订好票才能旅行。) 六、否定句中的用法 在否定句中,“before”的用法稍有不同。它通常表示“直到……才”的意思,强调某事的延迟发生。例如: * I didn't realize my mistake until it was too late before I could correct it. (直到我无法纠正时,我才意识到我的错误。) 七、与其他副词连用 “before”有时可以与其他副词连用,共同描述事件的先后顺序或条件。这种连用可以增强句子的表达力。例如: * They had scarcely arrived before they started arguing. (他们刚到就开始争论了。) 八、特定表达与习语 在英语中,还有一些包含“before”的特定表达或习语,它们具有固定的含义和用法。例如: * Long before:很久以前 * Before long:不久之后 这些习语在日常交流中经常出现,掌握它们有助于更自然、准确地使用英语。 一、单项选择题 1. I had finished my homework _______ my parents came back. A. after B. before C. when D. while 2. Please write your name _______ your address. A. after B. before C. during D. since 3. The cat sat _______ the fireplace. A. behind B. before C. beside D. between 4. You must finish your report _______ you can go home. A. after B. before C. when D. until 5. We didn't start the meeting _______ everyone had arrived. A. until B. after C. before D. since 二、填空题 1. She left the office _______ it started to rain. 2. I had never seen such a beautiful sunset _______ I went to Hawaii. 3. The train left the station _______ the passengers had boarded. 4. We need to make a decision _______ it's too late. 5. I had barely finished my meal _______ the phone rang. 三、改错题 1. I will do my homework after I finish watching TV. (改为使用“before”) 2. She went to bed after she brushed her teeth. (改为使用“before”) 3. We started eating dinner before the food was ready. (找出错误并改正) 4. I had to wait for my friend before we could go to the movies. (改为否定句) 5. I had never been to Japan before I visited last year. (改为肯定句) 四、翻译题 1. 请在吃饭前洗手。(Translate this sentence using “before”.) 2. 我还没有说完话,他就已经挂断了电话。(Use “before” to express this idea.) 3. 我们必须在太阳下山前到达山顶。(Translate this sentence using “before”.) |
鲜花 |
握手 |
雷人 |
路过 |
鸡蛋 |
分享
邀请