时间状语从句(全面掌握)

状语从句 思考：什么是从句？ I don’t know the girl in red. I don’t know the girl who is playing under the tree. 从句要素：① 至少要有两个句子 ② 要有引导词 一、 什么是状语从句 状语的功用：状语说明地点、时间、原因、目的、结果、条件、方向、程度、方式和伴随状况等。 状语一般由副词、介词短语、分词和分词短语、不定式或相当于副词的词或短语来担当。其位置一般放在句末，但也可放在句首或句中。 I didn’t realize how special my mother was until I became an adult. You should have put the book where you found it. I didn’t go because I was afraid. 二、状语从句的分类 1.时间状语从句2.地点状语从句3.原因状语从句4.条件状语从句5.目的状语从句 6.让步状语从句7.比较状语从句8.方式状语从句9.结果状语从句10.伴随状语从句 ▲ 常见考点： 考点一、主句与从句的时态呼应问题； 考点二、连接词的选择。 考点三、状语从句与非谓语动词之间的替换； 考点四、根据从句与主句的逻辑关系选用从属连词； 3、时间状语从句详解 1.引导词 （1）基本类：before ,after ,when ,while ,as ,since ,till ,until ,once ,as soon as. （2）名词类：（由名词词组充当引导词） the moment ,the minute ,the second ,the instant ,(一…就…) every time ,each time ,the first time ,the last time （3）副词类：（由副词充当引导词） immediately ,directly ,instantly (一…就…) （4）句型类： no sooner…than… ,hardly/scarcely…when…（一…就…） 2.引导词具体讲解： 当…时候：It was six o’clock when I got home. Sb was doing sth when… 1)when 这时 Sb was about to do sth/was on the point of doing sth when… Sb had just done sth when… 既然: It was foolish of you to take a taxi when you could walk there in five minutes. 既然你能 5 分钟就走到那儿，再搭出租车真是太傻了。 当…时候(引导持续性动作): He fell asleep while he was reading a book. 2) while 然而(用于句中) : He likes pop music while I am fond of folk music. 虽然,尽管(用于句首) While volleyball is her main focus, s...