suffer 指一般的损害、痛苦等等,但suffer from指长期的或习惯性的痛苦或困难.
suffer vi.受痛苦；受损害
vt.遭受；忍受
suffer the result /heavy losses /injuries承受结果/遭受大损失/负伤
suffer from headache/illness 遭受头痛/疾病的困扰
suffer (vt.) 和suffer from的区别：suffer 指一般的损害、痛苦等等,但suffer from指长期的或习惯性的痛苦或困难.
名词形式：suffering
suffer
1.感到疼痛、痛苦
He died very quickly,he didn't suffer much.他死得很快,没有多少痛苦.
2.承受,遭受
You must be prepared to suffer consequences.你要准备承担后果.
suffer from
1.患有（疾病等）
She suffers from headache.她患头痛病
2.为...所苦,因...而吃苦头
Our business has suffered from lack of investment.我们的企业因缺乏投资而受苦.
I'm suffering from a real lack of time this week.
我这周为时间不够用而苦.
Mrs.White's little boy is suffering from a bad flu bug again.