人教课标版必修高考英语I重点句型总复习(3)

http://www.sina.com.cn 2007年11月20日 18:33   英语教师网

  9、although/though引导让步状语从句

  教材例句

  Although she didn’t know the best way of getting to places,…

  句型解读

  Although conj. “尽管,虽然”,引导让步状语从句。拓展:

  ① although 从句多在句首, though 从句可在主句前、中、后任何位置,而且though 可以作副词用于句末,作“但是,不过”讲,而although 无此用法。

  ② although 用来陈述事实而不用于假设,所以as though(仿佛,好像),even though(即使,尽管)中不能用although。

  ③ though 引导的让步状语从句可以倒装(将表语、状语、情态动词后的动词原形前置到句首,此用法同as),而 although 不可以。

  10、once 引导时间状语从句

  教材例句

  Once she has made up her mind, nothing can change it.

  句型解读

  Once 可作为从属连词,作“一(旦)……就……”解,连接一个表示时间的状语从句。从句中常用一般现在时,现在完成时表将来。

  如:Once you have begin you must continue.

  Once printed,the book will be very popular。

  11.there be 句型

  教材例句

  Now, imagine there has been a big earthquake.

  句型解读

  “There +be +主语+其它成分”结构中there为引导词,本身无意义,谓语动词按照就近一致原则。其它相似句型还有:

  There happen to be 碰巧有

  There seems/appears to be 好像有

  There is likely to be 可能有

  There may/might be 也许有

  There must be 一定有

  There can’t be 不可能有

  There is said/reported to be 据说/据报道有

  There used to be 曾经有

  There is sure/certain to be 一定有

  12.It seems/seemed that…从句

  教材例句

  It seemed that the world was at an end。

  句型解读

  从句表示“(在某人)看来好像;似乎”

  ① It seems/looks/appears as if/though…看起来好像…

  ② Sb./Sth. looks as if/though…(不用seem/appear)

  ③ There seems/appears(to be)…(不用 look)

  There appears to have been a mistake. =It appears that there has been a mistake.

  ④ It seems so. =So it seems.看来似乎是这样。

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