as作为引导词作为关系代词作为副词表示比较让步等 连词“as”在英语中是一个极为常见且功能多样的词汇。它可以根据上下文的需要,担任多种角色,包括引导词、关系代词、副词等。 1. 作为引导词 “as”可以作为引导词,用于引导多种类型的从句,如定语从句、时间状语从句、原因状语从句和方式状语从句等。例如: * 定语从句:She is a teacher as we all know. (正如我们所知,她是一名教师。) * 时间状语从句:As it grew darker, we decided to camp. (随着天色渐暗,我们决定露营。) * 原因状语从句:I didn't go to the party, as I had a prior engagement. (我没去参加派对,因为我有先前的约会。) * 方式状语从句:You must do as I do. (你必须照我做的那样做。) 2. 作为关系代词 “as”可以作为关系代词,用于引导非限制性定语从句,指代整个主句的内容。例如: * As is known to all, he is a brilliant scientist. (众所周知,他是一位杰出的科学家。) 抗遗忘英语单词速记 随时随地背单词 不知不觉背单词 单词不用记 3. 作为副词 “as”可以作为副词,用于修饰形容词、其他副词或全句,表示“同样地”、“一样地”等含义。例如: * She is as tall as her sister. (她和她的姐姐一样高。) * He sings as beautifully as she does. (他唱得和她一样好。) 4. 表示比较 “as”常用于表示比较,结构为“as...as”。这种结构用于描述两个事物在某方面的相似性。例如: * This book is as interesting as that one. (这本书和那本一样有趣。) 5. 表示让步 “as”还可以用于表示让步,常与“though”或“although”互换使用。例如: * Child as he is, he knows a lot. (尽管他还是个孩子,但他知道很多。) 6. 表示时间 “as”可以表示“当……的时候”,用于描述某个动作发生的时刻。例如: * As I was walking home, I saw a familiar face. (当我走在回家的路上时,我看到了一个熟悉的面孔。) 7. 固定搭配和短语 “as”还常与其他词汇搭配使用,形成固定短语或搭配。例如: * as far as (就……而言) * as long as (只要) * as well as (和……一样好;既……又) * as soon as (一……就) 总结起来,“as”在英语中的用法非常广泛,可以作为引导词、关系代词、副词等,并可以表示比较、让步、时间等。掌握“as”的这些用法,可以帮助我们更准确地理解和运用英语。 1. 引导词用法 * She spoke English so fluently _______ a native speaker. * As it was raining, we decided to cancel the outdoor activity. * The teacher explained the concept in detail, _______ it was easy to understand. 答案 * She spoke English so fluently as a native speaker. * As it was raining, we decided to cancel the outdoor activity. * The teacher explained the concept in detail, as it was easy to understand. 2. 关系代词用法 * He has a younger sister, _______ is a talented pianist. 答案 * He has a younger sister, as is a talented pianist. ![]() |