"Suffer"是一个动词，表示遭受痛苦、困难或损失。它可以用作及物动词或不及物动词，常与介词from、for搭配使用。
1.suffer from/for：表示患有某种疾病；（因疾病、痛苦、悲伤等）受苦，受难，受折磨，例如：
He suffers from asthma.
他患有哮喘。（from除掉，表示他哮喘发作了。）
He suffers from a headache every day.
他每天都头痛。
Are you suffering from an excess of stress in your life?
你生活中的压力太大吗？
Many people suffer from mental illness at some point in their lives.
许多人在人生的某个阶段都会得精神病。
He suffers from a rare blood disease.
他患有一种罕见的血液病。
He was eventually diagnosed as suffering from terminal cancer.
他最终被诊断出患了晚期癌症。
He suffers from a serious heart condition.
他患有严重的心脏病。
Those suffering from infectious diseases were separated from the other patients.
传染病患者同其他病人隔离开来。
Many companies are suffering from a shortage of skilled staff.
许多公司苦于缺乏熟练员工。
He made a rash decision and now he is suffering for it.
他当初草率决定，现在吃苦头了。
suffer from something/someone：表示因某事/某人而受到伤害或困扰。例如：
She suffers from constant criticism at work.
她在工作中经常受到批评。
They suffer from the noise pollution in the city.
他们受城市噪音污染的困扰。
A lot of students suffer from exam nerves.
许多学生考试怯阵。
She was intelligent but suffered from a lack of ambition.
她很聪明，但却缺乏远大志向。
In these days of technological change we all suffer from information overload.
在这科技日新月异的时代，过多的信息使人人都应接不暇。
Your enjoyment of a novel can suffer from too much analysis and dissection.
对一部小说过多的剖析可能会影响你对它的欣赏。
2.suffer+名词短语:遭遇，遭受；蒙受
The peace process has suffered a serious blow now...
现在和平进程遭到重创。
Millions of refugees have suffered a total dislocation of their lives.
无数的难民饱受生活颠沛流离之苦。
People suffered many hardships during that long winter.
在那个漫长的冬季，人们吃了很多苦头。
He suffered a serious injury that obliged him to give up work.
他受伤严重，不得已只好放弃工作。
The victim suffered a dreadful injury and lost a lot of blood
受害者受了重伤，大量失血。
Ben suffered a heart attack and Helen rushed to his assistance.
本心脏病犯了，海伦急忙赶过来帮忙。
I suffered a nervous breakdown. It was a traumatic experience
我曾经神经崩溃过。那是一次痛苦的经历。
He had suffered a serious case of food poisoning over the Christmas holidays.
在圣诞假期里，他经历了一次严重的食物中毒。
The party suffered a humiliating defeat in the general election.
该党在大选中惨败。
He has suffered a serious setback in his political career.
他的政治生涯遭遇了一次严重挫折。
The party was suffering a crisis of confidence among its supporters.
当时这个政党在其支持者中正遭受信任危机。
She's suffering a delayed reaction to the shock.
她正在承受着冲击所带来的滞后反应。
Pluto seems to have suffered a major collision that tipped it 122 degrees from the vertical.
冥王星似乎受到过严重撞击，倾斜了122度。
He suffered a vicious attack by a gang of white youths
他遭到一帮白人青年的残暴袭击。
A hospital spokesman said she had suffered a fatal heart attack.
医院发言人说她死于心脏病发作。
He suffered a stunning defeat in the election.
他在选举中惨败。
They suffered a defeat at the polls.
他们在投票选举中惨遭失败。
The team suffered a shock defeat in the first round.
球队首轮失利，十分意外。
The world champions suffered a sensational defeat.
世界冠军遭遇惨败，引起了一片哗然。
The team suffered a major setback when their best player was injured.
最优秀的队员受了伤，使得这支队伍的实力大打折扣。
He suffered a serious injury that obliged him to give up work.
他受伤严重，不得已只好放弃工作。
Many children in the class suffered severe social and economic disadvantage.
班上许多孩子都来自社会地位低下经济困难的家庭。
She suffered no ill effects from the experience.
这次经历没有使她受到不良影响。
suffer a loss：表示遭受损失或失败。例如：
The company suffered huge losses in the last financial year.
公司在上一财政年度出现巨额亏损。
The army was forced to retreat after suffering heavy losses.
部队因伤亡惨重被迫撤退。
The team suffered a heavy loss in the match.
球队在比赛中遭受了惨重的损失。
He suffered loss of memory for weeks after the accident.
事故之后他有几个星期失去记忆。（损失的东西是不可数名词所指，不用不定冠词）
The company suffered a major setback after the product launch.
产品发布后，公司遭受了重大挫折。
suffer a setback：表示遭遇挫折或失败。例如：
After several attempts, he finally suffered a setback and failed to pass the test.
经过多次尝试，他终于遭遇挫折，未能通过考试。
The project suffered a setback due to unforeseen circumstances.
由于意外情况，项目遭遇了挫折。
suffer consequences：表示承受后果或惩罚。例如：
Those who break the law will suffer the consequences.
违法者将承受后果。
The company will suffer economic losses if it doesn't address the issue soon.
如果不尽快解决问题，公司将遭受经济损失。
3. [单独使用的动词] 变差；变糟，失利，失败，不成功
His school work is suffering because of family problems.
由于家庭问题，他的学业日渐退步。
I'm not surprised that your studies are suffering.
你的功课变得越来越差，我并不感到奇怪。