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托福语法指导-从属连词及真题要点解析

[08-08 15:02:19]   来源:http://www.xuehuiba.com  托福语法词汇   阅读:8794
概要:(2) The chief foods eaten in any country depend largely on —— best in its climate and soil.(A) it grows(B) what grows(C) does it grow(D) what does grow (90.1)[答案] B what grows = the thing that grows…另请注意:介词后面通常不能接that引导的从句,但可接what引导的名词性从句。(3) A hinge joint is —— permits the forward and backward movement of a door.(A) the(B) what(C) those(D) whose (88.10)[答案] B what = the thing that…(4) Essentially, a theory is an abstract. Symbolic representation of —— rea
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  (2) The chief foods eaten in any country depend largely on —— best in its climate and soil.

  (A) it grows

  (B) what grows

  (C) does it grow

  (D) what does grow (90.1)

  [答案] B what grows = the thing that grows…另请注意:介词后面通常不能接that引导的从句,但可接what引导的名词性从句。

  (3) A hinge joint is —— permits the forward and backward movement of a door.

  (A) the

  (B) what

  (C) those

  (D) whose (88.10)

  [答案] B what = the thing that…

  (4) Essentially, a theory is an abstract. Symbolic representation of —— reality.

  (A) what it is conceived

  (B) that is conceived

  (C) what is conceived to be

  (D) that is being conceived of (89.5)

  [答案] C what = the thing that (is conceived to be…) .答案(A)中的代词it是多余的,因为what本身即已包含了先行词(the thing ) 和关系代词(that) .答案(B)中的关系代词that引导的从句不可以置于介词的后面。

  (5) Most of the food what elephants eat is brought to their mouths by their trunks. (93.10

  [答案] B what应改为that.此句已含有先行词food,不能再用关系代词what.

  5. 主句和从句

  解题要点 主语从句是TOEEL常考而中国考生又较陌生英文文法结构。有关主语从句的命题几乎全部集中在structure (1-15题)中。主语从句的特点是读起来有种头重脚轻的感觉,而且有两个谓语动词。连词That 引导的主语从句应特别留意。因为That 在句中没有任何意义,它只具有引导出主语从句的功能,因而很容易被忽略。

  全真例题分析

  (1) —— xenon could not from chemical compounds was once believed by scientists.

  (A) For

  (B) It was

  (C) That

  (D) While (91.1)

  [答案] C That引导的主语从句。其中第一个谓语动词could from 是从句的谓语,第二个系动was是主句的谓语。

  (2) —— to space travelers is high acceleration of deceleration forces.

  (A) Danger can be

  (B) They can be dangerous

  (C) What can be dangerous

  (D) While danger (93.1)

  [答案] C what引导的主语从句。What既是从句的连词,又是从句的主语。

  (3) —— has been a topic of continual geological research.

  (A) Did the continents originate

  (B) How did the continents originate

  (C) Have the continents originated

  (D) How the continents originated (91.1)

  [答案] D How 引导的主语从句。

  (4) —— progress helps to relieve scarcities is a fact accepted by economists.

  (A) Technological

  (B) That technological

  (C)Although technological

  (D)There is technological

  [答案] B. That 引导的主语从句,当连续读到两个谓语动词(e.g. Helps…is),而空格在句首,应首先考虑主语从句。这是主语从句典型的句子结构。

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