prevent的用法和辨析
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词汇精选：prevent的用法和辨析
一、详细释义：
v.
阻止，妨碍 [I,T]
例句：
This discrepancy will prevent me from obtaining a visa.
因为这一差错，我将得不到签证。
例句：
The police have been trying to prevent them carrying weapons.
警方一直都设法阻止他们携带武器。
预防，防止 [I,T]
例句：
The solution then is to prevent the country from becoming a net debtor in the first place.
解决这个问题，首先是要防止一个国家成为净债务国。
例句：
These methods prevent pregnancy.
这些方法能防止怀孕。
二、词义辨析：
block,bar,hinder,obstruct,prevent,hamper
这些动词均含有“阻止、阻塞”之意。 block语气强烈，指有效堵住了通道，使人或物无法通过。 bar含义与block很接近，指阻塞通道或禁止出入，但有对暗示不用障碍物的阻止或禁止。 hinder语气较轻，多指阻碍、拖延人或事，强调使进展速度缓慢下来。 obstruct正式用词，语气强，多指以干扰或设置障碍的方式阻碍交通，使不能自由畅通。 prevent含义广泛，指采取预防措施或设置障碍去阻止某人或某事。 hamper侧重因受到约束或阻碍而造成的行动困难。
三、参考例句：
These methods prevent pregnancy.
这些方法能防止怀孕。
These methods prevent pregnancy.
这些方法能防止怀孕。
This will prevent leaning back.
这将避免身体向后地倾斜。
The condom helps prevent pregnancy.
避孕套是避孕措施之一。
Vitamin C is supposed to prevent colds.
维他命C被认为能预防感冒。
They held their breath to prevent exposure.
他们屏住呼吸以防暴露。
Crop rotation helps prevent soil erosion.
农作物轮作有助于防止水土流失。
These rules are intended to prevent accidents.
这些规则旨在防止事故发生。
Atmospheric conditions often prevent observation of stars.
大气的情况常使人们无法观察星星。
Nobody can prevent our getting married.
谁也阻止不了我们结婚。
商务写作指南：prevent、prohibit和ban的用法
WRONG: The Lease does not provide for a period of time during which the Tenant is prevented to use the Premises.
错误用法：租约中并未指明房客不能使用所租房屋的时间界限。
RIGHT: The Lease does not provide for a period of time during which the Tenant is prevented from using the Premises.
正确用法：租约中并未指明房客不能使用所租房屋的时间界限。
WRONG: The crew should be provided with training on how to prevent from sea contamination.
错误用法：船员应该接受关于如何防止海洋污染的培训。
RIGHT: The crew should be provided with training on how to prevent sea contamination.
正确用法：船员应该接受关于如何防止海洋污染的培训。
Although the verb “prevent” takes the preposition “from”, it can also be used with no preposition. The rules are as follows:
尽管动词“prevent”可以带介词“from”，它也可以不用介词。规则如下：
“prevent” + something
“prevent”+某事
The soldiers prevented the evacuation.
例句：士兵们阻止撤离。
“prevent” somebody from + -ing
“prevent”某人做某事
The soldiers prevented the refugees from evacuating.
例句：士兵们阻止难民们撤离。
The word “prohibit” works in exactly the same way:
单词“prohibit”的用法和“prevent”基本一致：
“prohibit” + something
“prohibit”+某事
The school rules prohibit smoking.
例句：学校规定禁止吸烟。
“prohibit” somebody from + -ing
“prohibit”某人做某事
There are no specific provisions in the law that would prohibit an employer from summarily dismissing an employee due to his/her misconduct.
例句：法律中没有特定的条文禁止雇主在暑假期间因为员工的表现不佳而将其解雇。
The verb “ban” also works in the same way:
动词“ban”也是类似的用法：
The government banned advertising of tobacco products in 2002.
例句：2002年，政府禁止烟草制品打广告。
The court banned him from attending football matches.
法庭禁止他参加足球比赛。
BBC英语：一分钟学会 Prevent 和 Avoid的用法区别
Hi guys! Dan for BBC Learning English here. This time we're looking difference between prevent and avoid.
大家好!我是BBC英语学习的丹，这节课我们学习prevent 和avoid的区别。
Prevent basically means stop. If you prevent something, you stop it from happening - often before it starts.
prevent主要表示阻止。阻止某事即不让某事发生——通常在事情发生之前。
You can prevent something, prevent something from happening or prevent someone from doing something.
用于表示阻止某事，组织某事发生或者阻止某人做某事。
For example:
比如说：
The arrival of the police prevented crime.
警察到来制止了犯罪。
Or:
再比如：
Losing my passport prevented me from flying.
我的护照丢了，上不了飞机。
Or:
又比如：
I prevented her from slapping me! Wow!
我挡住了她打我的手!哇!
Now avoid, basically means miss. If you avoid something, you try to make it miss you.
avoid主要表示错过。如果你避免某事，即努力让某事不发生在自己身上。
For example:
例如：
I avoided meeting my ex.
我避免碰见前任。
Or:
再比如：
I avoided the slap easily!
我轻松躲过了掌掴!
英语固定用法：prevent doing sth.
Prevent 阻止;阻碍;阻挠
prevent doing sth. 阻止做某事
prevent sb from doing sth 阻止某人做某事
1.
Nothing would prevent him from speaking out against injustice.
什么也阻止不了他反对公平的演讲。
2.
Her sudden arrival prevented him from going out.
她突然来到,使他不能外出
3.
Their prompt actions prevented the fire from spreading.
他们敏捷的行动阻止了火势的蔓延不能阻止他鸣不平
4.
Who prevents the plans from being carried out?
谁阻止了他们计划的实施?
5.
She thought he would make an abject fool of himself, and for her sake, as well as his, decided to prevent him from standing.
她认为他会当众出丑，为他俩着想，她决定制他当候选人
6.
He began to think that she had not died but that she was going to, unless he could find some way to prevent it.
渐渐地他就认为她并没有死，可他要是想不出法子加以挽救的话，眼看她是死定止。
7.
But this did not prevent the parents unable to shake his head.
但这丝毫没有阻止父母不住地摇头。
He said the "six steps" or "building blocks" can help prevent history from repeating itself.
他说，这“六个步骤”或“搭建屏障”可以帮助预防历史重演。
And yet they did not understand how they had to act to prevent a replay of the past.
然而，他们不明白自己怎样做才能防止过去的悲剧重演。
"The test is just a finger prick away, and can prevent a lot of problems, " he said.
他说：“检测仅仅是进行手指刺破，但却能阻止许多问题。”
Nothing but a miracle could prevent the company from going bankrupt.
只有奇迹发生，这家公司才能免于破产。
Was more to prevent ugly you secretly sneaked into the bottom of my heart.
更得严防丑恶偷偷潜入你心底。
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