1.withhold的基本意思是“抑制”“制止”,如“扣留”某事物、“保留”某意见或想法等,还可表示“止住”眼泪等。
2.withhold一般用作及物动词,接名词或代词作宾语; 用作不及物动词时,常与介词from连用。
3.withhold的过去式和过去分词均为withheld。

withhold from(v.+prep.)
1.使…得不到 keep sth back from (usually sb)
▲withhold sth from sb/sth
I think you are withholding the truth from me; please tell me, however painful it is.我想你一直对我隐瞒了真情,无论真情是多么令人痛苦,请告诉我。
The employers have to withhold the tax from your pay before you receive it.雇主们在你们领工资前必须从中扣除税款。
2.忍住不…; 抑制住 prevent oneself, as with patience, from sth or doing sth
▲withhold from sth/v-ing
How shall I withhold from tears when we part?我们要分手时,我怎能抑制住自己的眼泪呢?
It is often difficult to withhold from expressing one's opinion.一个人要把自己的意见憋在心里通常是困难的。
▲withhold sb from sth
The captain withheld his men from attack.那位上尉不让士兵进攻。

用作及物动词
▲S+～+n./pron.
I withheld payment until they had fulfilled the contract.他们履行合同后,我才付钱。
I shall withhold my consent.我将不予同意。
The judge withheld the decision until he had heard all the evidence.那位法官听完所有的证据后才作出裁定。
The sun withheld its light.太阳光黯淡了。
We can't withhold our laughter.我们忍不住笑出声来。
The dam is too weak to withhold the pressure of the rising water.水坝不够牢固,抵挡不住水上涨的压力。