- 最后登录
- 2008-11-25
- 在线时间
- 0 小时
- 寄托币
- 1148
- 声望
- 0
- 注册时间
- 2006-3-9
- 阅读权限
- 25
- 帖子
- 1
- 精华
- 0
- 积分
- 1098
- UID
- 2195156
![Rank: 4](template/archy_plt8/image/star_level3.gif)
- 声望
- 0
- 寄托币
- 1148
- 注册时间
- 2006-3-9
- 精华
- 0
- 帖子
- 1
|
这里的氛围真好,感觉复习起来不那么孤单了,呵呵,问一个语法题.0101的13题
13. In geometry, an ellipse may be defined as the locus of all points -------distances from two fixed points is constant.
(A) which as the sum of
(B) of the sum which
(C) the sum of whose
(D) whose sum that the为什么选A啊?有点想不明白
well, C should be correct. here is my opinion:
the sum of whose is correct.
In geometry, an ellipse may be defined as the locus of all points the sum of whose distances from two fixed points is constant. (whose = all points)
"the sum of whose distances from two fixed points" explains "the locus"
椭圆是到两点距离之和恒定的点的集合
Let's take a look at the sentence when choosing A
In geometry, an ellipse may be defined as the locus of all points which as the sum of distances from two fixed points is constant.
To determine whether it is right or wrong, let's split the second clause into seperate components:
Subject: which (refers to "all points", right?)
Verb: is
Appositive: the sum of distances from two fixed points
Complement: constant
It's not hard to see that the appositive is totally different from the subject, Obviously, we cannot say: all points is constant. it is wrong , wrong, and wrong either in Garmmer or meaning! In addition, to be regarded as an appositive, the sum of distances from two fixed points should be enclosed by two comma ",". So I'm sorry but A is out of the question!
B is definitely wrong, because the subject would be "the locus of all points."
D is definitely incorrect, because there is needed a verb following "that" clause.
Here is a correct sentence: (We read it below and i add a "," there, it is easy to understand)
An ellipse may be defined as the locus of all points, the sum of whose distances from two fixed points is a constant.
C. You see, there are 2 sentences in question, "an ellipse may be defined as the locus of all points" and "distances from two fixed points is constant" So, we need to make one sentence to be clause by using relative pronoun or conjuction. But from those choices are all relative pronoun. Choice (C) is the most appropriate answer, "whose" refering to " points". This question come from "In geometry, an ellipse may be defined as the locus of all points, and the sum of distances of all points from two fixed points is constant.
[ 本帖最后由 xizzhu 于 2006-4-10 22:26 编辑 ] |
|