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prevent的用法总结大全
prevent的意思
vt. 预防;阻碍;阻止;[宗教]引领
vi. 阻挠，阻止;
prevent的用法
1.防止；预防；阻止
Further treatment will prevent cancer from developing...
进一步的治疗将阻止癌症恶化。
We recognized the possibility and took steps to prevent it happening.
我们认识到了这种可能性，并且采取了一些预防措施。
2. 阻止；制止；阻碍
He said this would prevent companies from creating new jobs...
他说这将使公司无法创造新的工作机会。
Its nationals may be prevented from leaving the country...
其国民可能会被禁止出境。
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。
3.词组用法
“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。
prevent的用法例句
1. A dentist may decide to extract the tooth to prevent recurrent trouble.
牙医可能会决定拔掉那颗牙，以免反复发作。
2. The security zone was set up to prevent guerrilla infiltrations.
设立了安全区以防止游击队员的渗入。
3. Smear Vaseline on to your baby's skin to prevent soreness.
给孩子皮肤上抹些凡士林以防止肿痛。
4. The security forces had to intervene to prevent the situation worsening.
安全部队不得不介入，以防止局势进一步恶化。
5. Police are out in force to prevent a recurrence of the violence.
警方出动大量警力防止暴力事件再次发生。
6. Lemon juice can help to prevent economy-class syndrome by improving blood circulation.
柠檬汁能够改善血液循环，有助于预防经济舱综合征。
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
Nothing would prevent him from speaking out against injustice.
什么也阻止不了他反对公平的演讲。
Her sudden arrival prevented him from going out.
她突然来到,使他不能外出
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
Who prevents the plans from being carried out?
谁阻止了他们计划的实施?
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，她决定制止他当候选人。
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，眼看她是死定了
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
"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。”
剧重演。
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。
实用英语 | 单词catch的12种用法
1. 抓住、接住；接球游戏
单词catch 最常用的含义是“抓住、接住某物”、除此之外，catch作为名词还可以指“两个或以上参与者相互掷球的游戏”
例：
Who will catch the wedding bouquet?
接住新娘捧花的会是谁呢。
I caught the ball and threw it back to my friend.
我接住了球，并扔回给了我的朋友。
My son loves to play catch with his father.
我儿子很喜欢和他爸爸玩接球游戏。
2.逮住人；捕获动物；捕鱼量
catch 第二个意思是“抓住想要逃跑的人或动物，如罪犯、猎物等”。catch 作可数名词有“捕鱼量”的意思。
例：
The suspect was caught within two hours of the crime.
嫌犯在案件仅发生两小时内被捕。
Ms Anderson taught us how to catch and release wild butterflies.
Anderson女士教我们怎样捕捉、放生野蝴蝶。
You can get great catches in that river on a warm summer’s day.
在暖和的夏日，你能在那条小溪捉到很多鱼。
3. 撞见、发现
固定搭配catch somebody doing something 的意思是“撞见某人在做不好的事情;
句型 You wouldn’t catch somebody doing something 的意思是“别指望某人会做某事”。
例：
I was caught eating from the fridge in the middle of the night.
那天夜里，我从冰箱偷偷拿东西吃的时候被抓了个现行。
You wouldn’t catch me buying a jacket for 3000 yuan.
别指望我会花3000块买一件夹克。
4. 赶上、赶乘
我们用catch 来指“赶乘交通工具”或“赶上某个活动或事情”。
例：
Sorry, I have to go and catch the next train home.
对不起，我得赶下一班火车回家。
Hurry up! Don’t you want to catch the opening act?
快点!你难道不想赶过去看第一幕吗?
5. 患病
catch 也可以用来表示生病。catcha cold/ catchan illness, 注意疾病在这里是可数名词哦。
例：
We are prone to catching colds between seasons.
我们在换季时更容易感冒。
6. 缠住、卡住
当然，表示“缠住、卡住”时可以使用catch
例：
Be careful not to get your hair caught when you get out of the car.
下车时当心头发被缠住.
We saved a deer caught in a bear trap.
我们从捕兽夹中救下了一头小鹿。
7. 卷入；陷入
固定搭配get caught up in 的意思是“意外被卷入某件事、被某事缠身”。
例：
John got caught up in a row at a bar yesterday.
昨天在酒吧，John卷入到一场争吵中。
8. 听见
catch 有“听见、听清楚”之义, 后面一般接人。
例：
Could you repeat that? I didn’t quite catch you there.
你能再说一遍吗?我刚才没听清你说的。
9. 撞上
catch也可以表示“身体的某个部位撞上某处”。
例：
We use corner cushions to prevent small children from catching the edges of the furniture.
我们使用桌角垫，防止儿童磕到家具的边角。
10. 着火
catch fire 是固定搭配, 意思是“失火”，在这里catch是及物动词。
例：
The wooden house caught fire due to a short circuit.
由于电线短路，木屋失火了。
11. 蹊跷
catch作可数名词时，有“看似顺利的计划或提议中隐藏的不利因素或问题”之义。
例：
It all seems too perfect. There must be a catch.
一切都太完美了, 其中一定有蹊跷.
12. 般配的对象
catch作名词还可以表示“合适的对象”，这个用法相对口语化。
例：
Why can’t you ask Nancy out on a date? She’s a perfect catch.
你为什么 不约Nancy呢，她可是个完美对象。
动名词的用法，掌握这些用法，轻松解决类似题目，一起学习吧
首先，为大家介绍一个动名词用法口诀：
动名词常泛指，句法作用宾/表/定与主，时态/语态之形式，一般/完成/被动式。
Being done 系被动，不含任何进行意。用作主语请留意，常用it作形式主语，不指未来发生事，表达的信息系已知。
用作表语请记清，作用相当一名词，检验方法很简单，主与表换位能成立。
用作定语也易辩，表示名词之用途。
用作宾语稍复杂，关键留意谓语动词(跟动名词作宾语的常用动词附后)，时态同谓动作比较，先于谓动用完成式，其逻辑主语不固定，在句中/句外均有之。
否定式其前加not，复合式其前加物主词，非句首宾格词也可用，尤其口语中更如此。
说明：1、主-----主语 2、宾-----宾语 3、表------表语 4、定------定语 5、谓动---谓语动词
动名词的用法：
一、动名词作主语
1. 直接位于句首做主语。例如：
Swimming is a good sport in summer.
2. 用 it 作形式主语，把动名词(真实主语)置于句尾作后置主语。
动名词做主语时，不太常用 it 作先行主语，多见于某些形容词及名词之后。例如：
It is no use telling him not to worry.
常见的能用于这种结构的形容词还有：better，wonderful，enjoyable，interesting，foolish，difficult，useless，senseless，worthwhile，等。
注意：important，essential，necessary 等形容词不能用于上述结构。
3. 用于“There be”结构中。例如：
There is no saying when he'll come.很难说他何时回来。
4. 用于布告形式的省略结构中。例如：
No smoking ( =No smoking is allowed (here) ). (禁止吸烟)
No parking. (禁止停车)
5. 动名词的复合结构作主语
当动名词有自己的逻辑主语时，常可以在前面加上一个名词或代词的所有格，构成动名词的复合结构
(这时，名词或代词的所有格做动名词的逻辑主语)。
动名词的复合结构也可以在句中作主语。例如：
Their coming to help was a great encouragement to us.
二、动名词作宾语
1.作动词的宾语
某些动词后出现非限定性动词时只能用动名词作宾语，不能用不定式。常见的此类动词有：
admit, appreciate, excuse, stand, advise, allow, permit, avoid, consider, enjoy, finish
They went on walking and never stopped talking.他们继续走，说个不停。
I found it pleasant walking along the seashore.在海滩上走真是乐事。
Mark often attempts to escape being fined whenever he breaks traffic regulations.
每当马克违反交通规则时，他常常企图逃避罚款的处分。
2.作介词的宾语
We are thinking of making a new plan for the next term. 我们正考虑为下学期制定新的计划。
Shall we have a rest or get down to doing our work? 我们休息呢还是开始干活?
3.作形容词的宾语
The music is well worth listening to more than once. 这种曲子很值得多听几遍。
We are busy preparing for the coming sports meet. 我们正为马上到来的运动会忙着做准备。
三、动名词作表语
动名词作表语时句子主语常是表示无生命的事物的名词或what引导的名词性从句。
表语、动名词与主语通常是对等的关系，表示主语的内容，主语、表语可互换位置。
Your task is cleaning the windows. 你的任务就是擦窗户。
(Cleaning the windows is your task.)
What I hate most is being laughed at. 我最痛恨的就是被别人嘲笑。
(Being laughed at is what I hate most.)
四、动名词作定语
动名词作定语往往表示被修饰词的某种用途。如：
a walking stick =a stick for walking=a stick which is used for walking
a washing machine=a machine for washing=a machine which is used for washing
a reading room=a room for reading=a room which is used for reading
a measuring tape=a tape for measuring=a tape which is used for measuring
sleeping pills=pills for sleeping=pills which is used for sleeping
动名词是非限定动词的一种形式，由动词原形+ing构成。它既有动词的特征，又有名词的特征，故称。
动名词也有时态和语态的变化，如表所示(以及物动词write为例)，不及物动词没有语态的变化。
时态、语态主动被动一般式writingbeing written完成式
having writtenhaving been written
动名词使用注意事项：
1) 动名词做主语时，谓语动词为单数
2) 在动名词和不定式中，作为介词的宾语是动名词
3) 动名词的否定直接在其前加否定词，通过代词的宾格或所有格形式给出逻辑主语
例：I would appreciate you calling back this afternoon.
4) 有些词后只能接动名词
acknowledge;admit; advise;advocate;allow;appreciate; avoid; celebrate; consider; contemplate; defer; delay; deny;
detest; discontinue; dislike; dispute; enjoy; it entails; escape; excuse; explain; fancy; feel like; finish; forgive; can’t help;
hinder; imagine; it involves; keep; it means; mention; mind; miss; it necessitates; pardon; postpone; practice; prevent;
recall; report; resent; resist; risk; suggest; understand...
5) 另外还有一些接-ing形式的常用说法
it’s no good; it’s no/little/hardly any/ use; it’s not/hardly/scarcely use; it’s worthwhile; spend money/time; there’s no;
there’s no point in; there’s nothing worse than; what’s the use/point
6) 有些词后面加不定式和动名词均可
remember,forget,try,stop,go on,continue,stop,regret,cease,mean后面均可用不定式和-ing形式，但意义截然不容。
例：remember to do/doing：
①I remembered to post the letters.(指未来/过去未来将要做的动作)
②I remembered posting/having posted the letters.(我记得做过这个动作)
forget与remember的用法类似。
regret的用法：
①I regret to inform you that…(我很遗憾地通知你……)
②I regretted having left the firm after twenty years.(为了“二十年前的离开”而遗憾。)
try to(努力)与try +–ing(试验)：
①You really must try to overcome your shyness.
②Try practicing five hours a day.
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