suffer什么时候及物，什么时候接from、for？

RT.

给例给真相。

suffer

vi.

1. 受痛苦，感到痛苦(或苦恼)，受苦难；感到疼痛；患病：

例句: He is suffering from the loss of his old friend.
他正遭受失去老朋友的痛苦。

He is still suffering after medicine.
吃过药后，他依然感到很难受。

2. 受损失，受害：

例句: You'll suffer from smoking too much.
吸烟过多你的健康会受到损害。

to suffer from floods遭受水灾

3. 变差，变糟：

例句: One's sight suffers for ages.
年老后视力会变差。

4. 受惩罚，(尤指)被处死刑；殉难：

例句: You will suffer one day for your carelessness.
你大大咧咧的早晚要受惩罚的。

They have suffered for the country.
他们已为国殉难了。

5. 处于不利地位，受到妨碍：

例句: His firm suffered when he wasn't in.
他不在期间，他的商号经营得十分惨淡。

I don't think our relations will suffer for such a small quarrel.
我认为这样的小吵小闹不会妨碍我们之间的关系。

6. 作为动作(或作用)的对象，承受：

例句: to suffer from pressure承受压力

7. [废语]忍受，忍耐，耐心地坚持

vt.

1. 遭受，蒙受，经受(痛苦、烦恼、损失等)：

例句: I can not tolerate to suffer the loss of 1% of the profit.
我不能容忍把百分之一的利润损失掉。

to suffer pain忍受疼痛

2. 经受，经历：

例句: to suffer change经历变迁

You must suffer the test.你必须经受考验。

3. 宽恕，原谅，听任，容忍：

例句: No man could suffer his vulgarities.
谁也无法容忍他的粗野言行。

to be not able to suffer a little inconvenience
受不了一点儿委屈

4. 允许，准许：

例句: Will you suffer me to go with you?
我能跟你一起去吗?

He could suffer himself to be persuaded by me.
他倒是能听进我的劝告。

suffer from和suffer for所表达的意思不同，具体可见上面例句。

suffer from 是固定短语，遭受……痛苦 而suffer of 不是固定短语，一般也不这么使用。

附： suffer vt. ①遭受，经受; ~ pain (hardship) 遭受痛苦(困苦). ~ punishment 受罚. The farmers ~ed considerable losses from the bad crops. 因收成不好农民遭受很大损失. ~ change 经过变化. ②容忍；听任；允许; I will not ~ such conduct. 我不能容忍这种行为. ~ sb to come near 允许某人走近. I will ~ you to be present. 我会准许你出席的. How can you ~ such insolence？ 你怎么能容忍这样的傲慢无礼呢？ vi. ①受苦，受难，受罪; Sick people ~. 病人受苦. ~ for one's wisdom 聪明反被聪明误. The inhabitants were ~ing for provisions. 居民当时因粮食缺乏吃尽了苦头. ~ from illness 害病. ~ with throat trouble 患喉病. She ~s from headaches. 她时常头痛. You will ~ for your foolishness some day. 总有一天你会因为你的愚蠢受到惩罚. ②受损失，受损害; The engine ~ed severely. 这架引擎受损害很大. Our work will ~ if we are careless. 如果我们不小心，工作就要受损失.