cause
单词辨析：
尤指引起不好的事情。
Smoking can cause lung cancer.
吸烟可致肺癌。
What caused Tom to quit his job?
是什么原因使汤姆辞职的?
指引起某种情感、态度等。
Their sufferings aroused our sympathy.
他们的痛苦引起了我们的同情。
It may arouse his interest in these subjects.
这也许会引起他对这些学科的兴趣。
指导致某种情况或某种情感产生。
War brings death and famine.
战争导致死亡和饥荒。
The success brought the old man great satisfaction.
成功给这位老人带来了极大的满足感。
指引发某事，强调产生的效果。
The drugs effected his death.
毒品导致了他的死亡。
The new manager effected great changes in the firm.
新经理使公司发生了巨大的变化。
指某事发生的原因或做某事的正当理由，常后接介词 for 及 why 或 that 引导的从句，作“理由”解时还可后接动词不定式。
She gave her reason for being late.
她说出了迟到的原因。
He refused to explain the reasons behind his decision.
他拒绝解释为何作出这个决定。
We don't know the reason why she didn't come home.
我们不知道她为什么没回家。
He has reason to feel happy.
他有理由感到高兴。
指导致某事发生的行为、事件等；也指产生某种感情或做出某种举动的正当理由，作此义解时常可与 reason 换用。
Lack of physical exercise is the leading cause of obesity in young students.
缺乏体育锻炼是青少年学生肥胖的主要原因。
What was the fundamental cause of this failure?
这次失败的根本原因是什么？
There is no cause/reason for anxiety.
不必焦虑。
指辩解的理由或推脱的借口，常后接介词 for。
She always has an excuse for being late.
她总是能为自己的迟到找理由。
What is your good excuse for not coming?
你没来有什么正当理由？
指做某事的正当理由，作此义解时通常用复数。
She gave good grounds for divorce.
她给出了充分的离婚理由。
Did the police have reasonable grounds to file a lawsuit against that company?
警方有充分理由起诉那家公司吗？
相关例句：
They make common cause for a few purposes, but for the most part, they pursue their own interests.
他们因为几个目的而联手，可是多数情况下，他们追逐着各自的利益。
Even minor head injuries can cause long-lasting psychological effects.
即使是轻微的头部创伤也会对心理产生长期影响。
You have no cause to worry.
你没有理由心焦。
Low pay is the main cause of job dissatisfaction among teachers.
低薪是教师对工作不满的主要原因。
Refusing to have one leader has not helped the cause.
拒绝推举一名领导者对此项事业毫无帮助。
National isolation can only cause economic and cultural impoverishment.
锁国只会导致经济和文化上的困厄。