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. (過去分詞 ) 5. I know how to light a camp fire because I had done it before .(原因狀語從句) 狀語的位置比較靈活,可以位于句首、句末或句中。 enough用作狀語修飾形容詞和副詞時必須后置。 Presentation ? 狀語從句主要用來修飾主句或主句的謂語。一般可分為九大類,分別表示時間、地點、原因、目的、結(jié)果、條件、讓步、比較和方式。盡管種類較多,但由于狀語從句與漢語結(jié)構(gòu)和用法相似,所以理解和掌握它并不難。狀語從句的關(guān)鍵是要掌握引導不同狀語從句的常用 連接詞 和 特殊的連接詞 即考點?,F(xiàn)分別列舉如下 : 1. 時間狀語從句 ? 常用引導詞: when, as, while, as soon as, while, before, after, since , till, until 特殊引導詞: the minute, the moment, the second, every time, the day, the instant, immediately , directly, no sooner … than, hardly …when, scarcely … when I didn’t realize how special my mother was until I became an adult. While John was watching TV, his wife was cooking. The children ran away from the orchard(果園 ) the moment they saw the guard. No sooner had I arrived home than it began to rain. Every time I listen to your advice, I get into trouble. 2. 地點狀語從句 ? 常用引導詞: where 特殊引導詞: wherever, anywhere, everywhere Generally, air will be heavily polluted where there are factories. Wherever you go, you should work hard. 3. 原因狀語從句 ? 常用引導詞: because, since, as, since 特殊引導詞: seeing that, now that, in that, considering that, given that, considering that, My friends dislike me because I’m handsome and successful. Now that everybody has e, let’s begin our conference. The higher ine tax is harmful in that it may discourage people from trying to earn more. Considering that he is no more t