状语从句课件Leo.ppt

副词性从句（状语从句）语法讲与练 欢迎来到从句大家庭！ 从句分三类： 名词性从句，形容词性从句，副词性从句。 副词性从句就是状语从句，家庭成员最多。 高考状语从句考查重点 从属连词的选择； 同类状语从句中连词的辨析。 引导状语从句的关联词是从属连词 考点2 表示时间的词组引导状从 as soon as, no sooner…than…,hardly (barely, scarcely) …when…等用法都表示主从动作相继发生。 hardly和no sooner放在句首，从句要倒装。 例：Hardly had she sat down when the telephone rang. Immediately, instantly，the moment，the instant, the minute, the second，the day (the + 瞬时名词/段时名词) 等 表示时间概念的词也可引导时间状从。 例： I went to see him immediately I heard from him. by the time, each time, every time, any time, last time, next time, first time, soon after, shortly after都可以作为连词引 导时间状语。如：I recognized him the moment I saw him. By the time he was four, he had taught himself math. Each time he came, he would call on me. 考点3 until/ till 主句谓语动词是持续动词，“直到…为止”。如： I worked till (until) he came back. not…until…: “直到…才”,主句谓语动词必须是短暂性的 如： She won’t go to bed till/until he returns home. not…until结构若在强调句中成为被强调的部分，须将not 和until连在一起并前移，如果not until在句首，主句倒 装。 It was not until he came back that I know it. = Not until he came back did I know it. 重要考点 几个极易混淆的时间状语从句： It was +时间点+when…（当的时候时间是） It was 5 am when we arrived at the village. It was/will be+时间段+before…(没过…就／过了…才) It was/will be two weeks before we met/meet again. It is /has been +时间段+since…（自从…以来有…） It is/has been 3 years since we last met. 突破点：一看be动词的时态，二看时间段还是时间点。 注意：在“It is /has been +时间段+since…”句型中，从句 的动词必须是短暂性的，如果是延续性的动词，时间要从 从句的动作结束时算起。如： It is 3 years since I smoked.( 我戒烟有三年了) 注意： 时间状语从句中谓语动词不能用任何一种将来 时，只能用现在时和过去时表示将来时。 考点 地点状语从句和定语从句的区别： ①定语从句前有一个表示地点的名词作先行词；而地点状语从句无此特征。 ②地点状语从句可位于句首，而定语从句不可。 I found the pen where I had left it． I found the pen in the desk where I had left it． 考点2 Now that(既然), seeing that, considering that 等也可以引导原因状语从句。 ___________you have finished your homework, you may go home now. A. When B. In that C. From that D. Now that 考点1 as引导让步状语从句倒装,作为从句表语的形容词 或者名词位于从句主语之前。此外还有however也要倒 装。 although 不可以倒装，though可倒可不倒，不倒多 ________, he doesn’t study well. As he is clever