【英语】2010-2011学年同步精品学案(人教必修1):Unit 1 Period One Warming Up,Pre-reading and Reading
【英语】2010-2011学年同步精品学案(人教必修1):Unit 1 Period One Warming Up,Pre-reading and Reading第5页

  用法点拨

  (1)这是一个省略结构。while是一个引导时间状语从句的连词,后面省略了you are。

  (2)状语从句的主语和主句的主语是同一个人或物,并且从句中含有 be 动词的某种形式,这时从句中的主语连同这个 be 动词可一起省略,且并不影响句子的意思。这种情况一般出现在由 when, while, before, after, until, unless, if, though/although 等连词引导的从句中。

  Don't talk while eating. 吃饭的时候不要说话。

  He knows many things though (he is) very young.

  他年龄不大,但知道的事不少。

  (3)当状语从句为"连词+it is +adj."时,也常将it is 省略掉。

  When (it is) possible,I'll go to Beijing to see you.

   可能的话,我将去北京看你。

  If (it is) necessary,I'll come tomorrow.

  必要的话,明天我就来。

  完成句子

  (1)When_he_was_young(年轻时),he gained many prizes.

  (2)I won't go to the party unless_invited(除非被邀请).

  (3)When/while_at_school( 上学时), he was not good at languages.

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  用法点拨

  (1)not...until...直到......才......,直到......为止。其中,until既可作连词,也可作介词。

  (2)当not until位于句首时,句子要倒装。其结构为:Not until+从句/表时间的词+助动词+(主句)主语+谓语+其他。

  Not until the teacher came in did the students stop talking.

  直到老师进来学生们才停止讲话。

  (3)not until的强调结构为:It is/was not until+从句/表时间的词+that+其他。将上面两句改为强调句为:

  It was not until the teacher came in that the students stopped talking.

  翻译句子

  直到父亲回来我才看电视。

  (1)I_didn't_watch_TV_until_my_father_came_back.

  (2)Not_until_my_father_came_back_did_I_watch_TV.

  (not until 放在句首)

  (3)It_was_not_until_my_father_came_back_that_I_watched_TV.(强调until从句)

  考题例证

  "You can't have this football back ________ you promise not to kick it at my cat again,"the old man said firmly.(广东高考)

  A.because B.since C.when D.until

  答案 D

  解析 表示直到......才发生的结果。

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