目的状语从句的用法

http://www.sina.com.cn 2008年03月15日 15:13   新东方

  考点78: 目的状语从句的用法

  目的状语从句可以由表示“为了, 以便”的so that(有时省略so), in order that和表示“以免, 以防”的lest, for fear that, in case引导(lest, for fear that后的目的状语从句一般要用“可以省略的should+动词原形”的虚拟语气形式; in case后的目的状语从句多用虚拟语气, 但也可用陈述语气)。例如: They set out early that they might arrive in time. 他们早点动身, 以便及时到达。// She takes notes carefully in class so that she may use them when she reviews her lessons after class. 她在课堂上认真记笔记, 以便她能在课后很好地复习功课。// He shouted at the top of his voice in order that he might be heard. 他尽力大声叫喊, 以便别人能听见。// I will not make a noise lest I (should) disturb you. 我不出声, 以免打搅你。// He is working hard for fear that he (should) fail. 他认真学习, 以免考不及格。// Take your umbrella in case it rains. 带上雨伞, 以防下雨。

  如果表示“为了, 以便”的目的状语从句的主语与主句的主语相同, 可用in order to或 so as to取代该目的状语从句, 注意体会以下例句: He hurried through his work in order to catch the train. 他匆匆干完手中的活, 为的是能赶上火车。// I sent the plans in order for you to study them fully before the meeting. 我寄上这些计划以使你会前充分研究一下。 // The desks are kept some distance apart, so as to prevent cheating. 这些书桌都隔着一段距离摆放, 以防作弊。 // I came so early as to catch the first train. 我起得早, 以便能赶上头班火车。

  [考题1] I’d like to arrive 20 minutes early ____ I can have time for a cup of tea. (2005北京)

  A. as soon as B. as a result C. in case D. so that

  [答案] D

  [解析] so that表示希望实现的目的。

  [考题2] Roses need special care ____ they can live through winter. (2004)

  A. because B. so that C. even if D. as

  [答案] B

  [解析] so that表示希望实现的目的。

  [考题3] Leave your key with a neighbor ____ you lock yourself out one day. (2007北京)

  A. ever since B. even if C. soon after D. in case

  [答案] D

  [解析] “you lock yourself out one day”是应该避免出现的结果, 下划线处应选用in case, 引导目的状语从句, 表示“以免……”。

  [考题4] I shall stay in the hotel all day ____ there is news of the missing child.(2000上海春)

  A.in case B.no matter C.in any case D.ever since

  [答案] A

  [解析] 题干意为: 我将整天在旅店里呆着, 以防有丢失孩子的消息。本题应选in case引导目的状语从句表示“以防……”。

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