我们之前学习了从句、介词短语表原因，今天继续花样表因果——用动词和动词短语表原因。
1、说到动词表因果关系，大家首先想到的是cause
cause做动词时，表"造成，导致”的意思，尤其指造成不好的事情发生。
cause做动词表因果关系时，一般有三种用法:
1.cause sth The difficult driving conditions caused several accidents.
2. cause sb/sth to do The bright light caused her to blink.
3. cause sb sth I hope the children haven't caused you too much trouble.
2、result in, lead to, bring about 三者都表示“引起，导致’的意思。
Your positive thoughts and words result in positive actions.
New ways of thinking lead to opportunities and growth.
Changes in habitat may bring about the reduction in some species.
在使用这三个短语的时候，要注意-点: 它们后面通常跟名词或名词短语。
3、contribute to也是比较常见的表示因果关系的短语。它的本意是对...作贡献"，
表示不好的方面时相当于“造成，导致"。There are 6 main factors that contributeto depression.
表示好的方面相当于"有助于”。
The increased taxes and the television advertising both contribute to the reduction of smoking.
动词表示原因，大家都掌握了吗?一起来小小的总结一下吧!
1. cause 造成，导致;尤其指不好的事情
2. result in, lead to, bring about 引起，导致
3. contribute to 负面:造成、导致; 正面:有助于
小练习
1、All improvement requires making changes, but not all changes result____improvement!
A. for
B. in
C. of
答案：B
2、Highway motor vehicle accidents often___ death.
A. lead to
B. result about
C. bring up
答案：A
3、飞行员的失误导致飞机坠毁。下面哪个句子的翻译是错误的?
A.The crash of the plane was due to pilot error.
B. Pilot error resulted in the crash of the plane.
C. Because the pilot error, the plane crashed.
答案：C
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