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prevent ... from 妨碍,,防止,,预防 Nothing can prevent us from carrying out the plan. 什么也无法阻挡我们去实施这个计划。 Ways must be found to prevent the poisonous gases from polluting the air. 一定要找到办法防止有毒气体污染空气。 Nobody can prevent him from running the risk. 没有人能够阻止他去冒险。 My only idea was to prevent the woman from speaking. 我唯一的想法就是不让那女人讲话。 Cotton mittens will prevent the baby from scratching his own face. 棉的连指手套使婴儿不会抓伤自己的脸。 His prompt action prevented the fire from spreading. 他的果断行动制止了火势的蔓延。 I have been unavoidably prevented from coming. 我身不由己, 不能前往。 详解:prevent指“阻止成功”,如果阻止了,但是没有成功,不可用prevent。如果说她阻止他去,实际上他的确没有去,可以说She prevented him from going.但是他不听劝,还是去的话,要说She tried to prevent him from going, but he still went; prevent加宾语时,宾语后不可接不定式。 She prevented him to go. 该句是错误的表达。 prevent的基本意思是“止”,可表示“阻止”(某计划或意图)、“防止”(已有兆头的险事、恶事)、“制止”(某人做某事)等,强调做好预先的防备或准备,含有“阻止成功”的意味。 prevent主要用作及物动词,可接名词、代词或动名词作宾语,不接不定式作宾语。用作prevent宾语的动名词前常有物主代词或者名词,人称代词宾格表示其逻辑主体。prevent可用于被动结构。prevent偶尔也可用作不及物动词。 表示“阻止做某事”,可用prevent sb/sb's v -ing,也可用prevent sb from v -ing,这几种用法在意义上没有明显的区别。
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