17 根据先行词来判断介词 Track17
17 根据先行词来判断介词 Track17
所选用的介词与先行词构成固定搭配。比如：at the rate，in the direction，to the extent，to the degree，at the temperature，with ease，by the means等。
先看两个简单句：
About a thousand species of animals are in danger of extinction. They are being destroyed at this rate and the rate has increased.
约有1,000种动物濒临灭绝。它们目前正在 以这样的速度 遭到残害，而且 这个速度 还在加快。
我们现在要明确说是什么速度在增加：the rate（接定语） has increased，所以用they are being destroyed at this rate 作定语修饰the rate。我们便得到：
The rate (they are being destroyed at which ) has increased.
连词要放在从句开头，所以变为：
The rate ( at which they are being destroyed) has increased.
最后，我们得出一个标准的定语从句，如下：
a.About a thousand species of animals are in danger of extinction, and the rate at which they are being destroyed has increased.
约有1,000种动物濒临灭绝，而且遭到残害的速度日益加剧。
以下更多例句，请认真分析：
b.When television was first introduced, the extent to which it would affect society could not have been foreseen.
最早发明电视的时候，人们并没有预见到它会对人类社会产生重大影响。
c.It is useful to be able to predict the extent_________which a price change will affect supply and demand.
A. from
B. with
C. to
D. for
正确答案：C。
d.It is the way we understand the world and the means by which we shape it.
这就是我们理解这个世界的方式，同时也是我们塑造它的手段。
e. The speed at which an animal lives is determined by measuring the rate at which it uses oxygen.
通过测定动物消耗氧气的速率可以确定该动物的生长速度。
f.Americans regard education as the means by which the inequalities among individuals are to be erased and by which every desirable end is to be achieved.
美国人认为，教育可以消除群体中存在的不公，实现个人的理想。
g.A frequent criticism of most online companies has been the snail's pace at which they deliver their products.
人们对大多数网络公司的怨言是他们如蜗牛爬行一般的送货速度。
h.The pressure from spending in turn determines the ease with which prices increase. 来自消费的压力转而又决定了价格上涨的快慢。
i.The ease_________the fish can be collected from the shore has almost resulted in its extinction.
A. which
B. with what
C. with which
D. with that
正确答案：C。
j.By bringing about a great leap in the speed and ease with which information moves from place to place, the Internet has greatly accelerated the rate of scientific and technological changes.
互联网使信息传递更快捷、方便，由此大大加速了科技变革的进程。
先看两个简单句：
About a thousand species of animals are in danger of extinction. They are being destroyed at this rate and the rate has increased.
约有1,000种动物濒临灭绝。它们目前正在 以这样的速度 遭到残害，而且 这个速度 还在加快。
我们现在要明确说是什么速度在增加：the rate（接定语） has increased，所以用they are being destroyed at this rate 作定语修饰the rate。我们便得到：
The rate (they are being destroyed at which ) has increased.
连词要放在从句开头，所以变为：
The rate ( at which they are being destroyed) has increased.
最后，我们得出一个标准的定语从句，如下：
a.About a thousand species of animals are in danger of extinction, and the rate at which they are being destroyed has increased.
约有1,000种动物濒临灭绝，而且遭到残害的速度日益加剧。
以下更多例句，请认真分析：
b.When television was first introduced, the extent to which it would affect society could not have been foreseen.
最早发明电视的时候，人们并没有预见到它会对人类社会产生重大影响。
c.It is useful to be able to predict the extent_________which a price change will affect supply and demand.
A. from
B. with
C. to
D. for
正确答案：C。
d.It is the way we understand the world and the means by which we shape it.
这就是我们理解这个世界的方式，同时也是我们塑造它的手段。
e. The speed at which an animal lives is determined by measuring the rate at which it uses oxygen.
通过测定动物消耗氧气的速率可以确定该动物的生长速度。
f.Americans regard education as the means by which the inequalities among individuals are to be erased and by which every desirable end is to be achieved.
美国人认为，教育可以消除群体中存在的不公，实现个人的理想。
g.A frequent criticism of most online companies has been the snail's pace at which they deliver their products.
人们对大多数网络公司的怨言是他们如蜗牛爬行一般的送货速度。
h.The pressure from spending in turn determines the ease with which prices increase. 来自消费的压力转而又决定了价格上涨的快慢。
i.The ease_________the fish can be collected from the shore has almost resulted in its extinction.
A. which
B. with what
C. with which
D. with that
正确答案：C。
j.By bringing about a great leap in the speed and ease with which information moves from place to place, the Internet has greatly accelerated the rate of scientific and technological changes.
互联网使信息传递更快捷、方便，由此大大加速了科技变革的进程。
