从属连词 He fell off the bike _____. A. while he rode B. while he was riding C. while he is riding D. while on bike 一、典例精析 【解析】本题主要考查的是while 引导的时间状语从句，一般而言，主句的动作发生在从句之中，故从句要用进行时态，故选B。 【答案】B 连 词 连词分为并列连词和从属连词两大类。并列连词是连接主语与主语，谓语与谓语，句子与句子，分词与分词的词，它要求前后两部分有相同的形式和语法作用；而从属连词一般连接主句与从句，从句形式有名词性从句，定语从句和状语从句等。 二、考点剖析 从属连词--用来引导从句。常见的从属连词有： (1)引导时间状语从句的after, before, when, while, as, until, till, since, as soon as等。 (2)引导条件状语从句的if, unless等。 (3)引导原因状语从句的because, as, since等。 (4)引导目的状语从句的so that, in order that等。 (5)引导让步状语从句的though, although, even if等。 (6)引导结果状语从句的so that, so…that, such…that等。 (7)引导比较状语从句的than, as…as等。 (8)引导宾语从句的that, if , whether等。 Mr. White was taking a shower _____ the UFO landed on the street. A. where B. while C. when D. whether C While Mr. White was taking a shower，the UFO landed on the street. “when” 和 “while” when引导的状语从句的动作多为终止性动词，也为可持续动词；但while只能是可持续动词。 我会一直工作到你回来。 I will work till you come back. not…until/ till 直到……才 …till 直到……为止 翻译：我会到你回来时才睡觉。 I won’t go to bed until/ till you come back. 我父亲直到我们吃完饭时才回来。 My father _____ come back until we had supper. 翻译：他直到3岁才会讲话。 He _____get up until his mother wakes him up. didn’t 他经常等到妈妈叫他才起床。 He _____ speak until he was 3. couldn’t doesn’t He took the MP3 player with him _____ he could enjoy music during the trip. A. because B. so that C. when B 他起早是为了赶上早班车。(表目的) ①He got up early so that he could catch the early bus. ②He got up early so that he caught the early bus. 他起早，结果赶上了早班车。（表结果） He got up so early that he caught the early bus. so…that so that：①为了； ② 所以，结果 如此……以致 三、巩固提升 My sister _____ go to bed _____ my mother came back last night. not until B. doesn't; until C. didn't; until D. aren't; until 【解析】句意：我妹妹昨晚知道我妈妈回来才上床睡觉。固定短语not…until…直到……才……，last night昨晚，是一般过去时态，所以此句借助助动词did,故选C。 【答案】C 连 词 连词分为并列连词和从属连词两大类。并列连词是连接主语与主语，谓语与谓语，句子与句子，分词与分词的词，它要求前后两部分有相同的形式和语法作用；而从属连词一般连接主句与从句，从句形式有名词性从句，定语从句和状语从句等。 用法 从属连词--用来引导从句。 从属连词 四、思维导图 ... ...
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