let第三人称单数

1. 让
2. 假设，假定
3. 出租，租给；承包
4. 允许，容许
5. 使流出；放出，排放
6. 放，放长
7. 让...进入
8. 听任
9. 使得
10. 被承包；被人借用中
11. 阻碍，妨害
12. 出借
13. 提出建议时说

1. 障碍，阻碍，妨碍
2. 出租；出租的房屋；租客
3. 球触网重发，球触网，发球擦网或比赛受阻碍 ，擦网球

1. vt. 让,使 allow to do or happen
2. vt. & vi. 出租 rent
3. vt. 放掉,松掉 stop holding

1.允许，任由，让（某事发生）
If youlet something happen, you allow it to happen without doing anything to stop or prevent it.

let是什么意思

e.g. People said we were interfering with nature, and that we should justlet the animals die...
人们说我们是在干涉自然界，还说我们应该任由动物死去。
e.g. Thornelet him talk...
索恩让他畅所欲言。

2.允许，准许，同意（某人做某事）
If youlet someone do something, you give them your permission to do it.

let的意思

e.g. I love sweets but Mum doesn'tlet me have them very often...
我爱吃糖，可妈妈不让我常吃。
e.g. The Americans won'tlet her leave the country...
美国人不允许她出境。

3.（开门、让路等）允许（…进、出或通过）
If youlet someone into, out of, or through a place, you allow them to enter, leave, or go through it, for example by opening a door or making room for them.

e.g. I had to get up at seven o'clock this morning tolet them into the building because they had lost their keys...
今天早上我不得不7点钟就起床开门让他们进楼，因为他们把钥匙弄丢了。
e.g. Ilet myself into the flat...
我自己开门进了公寓。

4.（用于引出要说的话）让我，我来
You uselet me when you are introducing something you want to say.

let

e.g. Let me say it again. I despised Wade's life...
我再说一遍。我厌恶韦德的生活方式。
e.g. Let me tell you what I saw last night...
我来告诉你我昨晚见到了什么。

5.（用于礼貌地表示愿意提供帮助）让我，我来
You uselet me when you are offering politely to do something.

let的近义词

e.g. Let me take your coat...
我来帮您拿外套。
e.g. Let me get you something to drink.
我给你拿杯喝的来。

6.（用于将他人的注意力引向下面的话题）让我们
You saylet's or, in more formal English,let us, to direct the attention of the people you are talking to towards the subject that you want to consider next.

e.g. Let's consider ways of making it easier...
咱们来想想办法把它变得更容易些吧。
e.g. Let us look at these views in more detail.
我们来具体研究一下这些观点。

7.（用于提出建议或表示赞同）让我们
You saylet's or, in formal English,let us, when you are making a suggestion that involves both you and the person you are talking to, or when you are agreeing to a suggestion of this kind.

e.g. I'm bored.Let's go home...
我觉得好无聊。我们回家吧。
e.g. 'Shall we go in and have some supper?' — 'Yes,let's.'
“我们要不要进去吃点晚饭？”——“好啊，走吧。”

8.（用于委婉地发出指令）让我们
Someone in authority, such as a teacher, can uselet's or, in more formal English,let us, in order to give a polite instruction to another person or group of people.

let的近义词

e.g. Let's have some hush, please...
请大家安静一下。
e.g. 'Let us pray,' said the Methodist chaplain.
“我们来祈祷吧，”那个循道宗牧师说。

9.（表示犹豫或思考）让我看看/让我想想
People often uselet in expressions such aslet me see orlet me think when they are hesitating or thinking of what to say next.

e.g. Now,let's see. Where did I leave my bag?...
嗯，我想想。我把包放哪儿了？
e.g. 'How long you been living together then?' — 'Erm,let me think. It's about four years now.'
“那你们住在一起有多久了？”——“呃，我想想。到现在差不多4年了。”

10.（表示不关心）任由，让，随
You can uselet to say that you do not care if someone does something, although you think it is unpleasant or wrong.

e.g. If he wants to do that,let him do it...
他要做，就让他做好了。
e.g.Let them talk about me; I'll be dead, anyway...
随他们怎么说我吧；我反正是要死的。

11.（表示认为某人应该做某事）让
You can uselet when you are saying what you think someone should do, usually when they are behaving in a way that you think is unreasonable or wrong.

e.g. Let him get his own cup of tea...
自己的茶让他自己端。
e.g. If they value these data,let them pay for them.
他们要是看重这些数据，就让他们出钱买。

12.（表示祈祷或盼望）让
You can uselet when you are praying or hoping very much that something will happen.

e.g. Please God,let him telephone me.
上帝啊，求你让他打电话给我吧。

13.假设；假定；如果
You can uselet to introduce an assumption on which you are going to base a theory, calculation, or story.

e.g. Let x equal 5 and y equal 3...
设x等于5，y等于3。
e.g. The new man in my life (let's call him Dave) had a very jealous ex-girlfriend.
我生命中这个新男人（就叫他戴夫吧），他的前女友是个醋坛子。

14.出租（房屋、土地等）
If youlet your house or landto someone, you allow them to use it in exchange for money that they pay you regularly.

e.g. She is thinking of letting her house to an American serviceman...
她正考虑把房子租给一个美国军人。
e.g. The reasons for letting a house, or part of one, are varied.
把整套房子或其中一部分租出去，其原因是多种多样的。

15.（网球或羽毛球发球时的）擦网球，触网重发
In tennis or badminton, if you serve alet, the ball or shuttlecock touches the net but lands in the correct part of the court. You then serve again.

16.（通常用在否定句后）遑论，更别提，更不用说
Let alone is used after a statement, usually a negative one, to indicate that the statement is even more true of the person, thing, or situation that you are going to mention next.

let的解释

e.g. It is incredible that the 12-year-old managed to even reach the pedals,let alone drive the car.
12岁的孩子能踩到踏板已经是不可思议，就更不用说开车了。

17.不打扰；不干涉
Tolet someonebe means to leave them alone and not interfere in what they are doing.

e.g. If your child is really sick and needs sleep and quiet,let him be.
如果孩子真的病了，需要睡眠和静养的话，就不要去打扰他。

18.松开；放开
If youlet go of someone or something, you stop holding them.

e.g. Shelet go of Mona's hand and took a sip of her drink...
她放开莫娜的手，抿了一口饮料。
e.g. She held the photos with the determined grip of a small child and wouldn'tlet go.
她像小孩一样紧紧攥住那些照片，不肯放手。

19.放弃，舍弃（感情、态度、控制权）
If youlet go of a feeling, attitude, or the control that you have over something, you accept that you should give it up or that it should no longer influence you.

e.g. In therapy, she began tolet go of her obsession with Mike...
在心理治疗中，她开始逐渐放下对麦克的痴迷。
e.g. The work should focus on helping parents tolet go of their children.
工作应以协助父母放松对子女的管教为重点。

20.放走；释放；让…逃走
If youlet someone or somethinggo, you allow them to leave or escape.

let的意思

e.g. They held him for three hours and theylet him go...
他们扣留了他3个小时后放走了他。
e.g. I'm quite happy really to net a fish and thenlet it go.
网到鱼后又把它放生，我挺开心的。

21.解雇；解聘；让…离职
When someone leaves a job, either because they are told to or because they want to, the employer sometimes says that they areletting that persongo .

e.g. I've assured him I have no plans tolet him go...
我向他保证，我绝对没打算让他走人。
e.g. Peterson waslet go after less than two years.
不到两年彼得森就被解雇了。

22.不予理会；不予追究
If someone says or does something that you think is annoying or stupid and youlet it go, you do not react to it or say anything about it.

e.g. Let it go, he thought. He didn't feel like arguing.
管它呢，他想。他并不想争吵。

23.放松；随心所欲
If youlet yourself go, you relax and behave much more freely than usual.

e.g. Stop worrying about what you're feeling.Let yourself go.
不要总想着自己是什么感觉。放轻松点。

24.不修边幅；不注意仪表
If someonelets themselves go, they pay less attention to themselves or their appearance than they used to, so that they look untidy or unattractive.

let的翻译

e.g. If you havelet yourself go, you should consider doing something about it for the sake of your health.
你以前要是对自己不管不顾，现在应该为了自己的健康着想而改变一下。

25.(使自己)陷入，卷入，招惹（麻烦等）
If you say that you did not know what you wereletting yourself in for when you decided to do something, you mean you did not realize how difficult, unpleasant, or expensive it was going to be.

e.g. He got the impression that Miss Hawes had no idea of what she was letting herself in for...
他觉得霍斯小姐根本不知道自己会惹来什么麻烦。
e.g. I realized I'dlet myself in for something from which there was no turning back.
我意识到自己陷入了没有退路的境地。

26.告知；告诉；使知情
If youlet someoneknow something, you tell them about it or make sure that they know about it.

e.g. They want tolet them know that they are safe...
他们想让他们知道他们安全无事。
e.g. If you do want to go, pleaselet me know.
如果你真想去的话就请告诉我。

27.泄露；无意中吐露
If youlet drop ,let fall, orlet slip information, you reveal it casually or by accident, during a conversation about something else.

e.g. How could she know about that? He'd certainly neverlet drop any hint...
她是怎么知道的？他绝对没有走漏半点风声。
e.g. He might havelet something slip in a moment of weakness.
他可能一时大意说漏了嘴。

28.放任；给予完全的自由
If you say that someone hasbeen let loose in a place or situation, you mean that they have been given complete freedom to do what they like in that place or situation, and you suggest that this may be risky.

let的近义词

e.g. She has all the glee of a little girllet loose in a sweetie shop...
她像糖果店里无人管束的小女孩那样兴高采烈。
e.g. Trainees go through a four-hour lesson before they arelet loose on the controls.
受训人员须上4小时的课才能自由进行操作。

29.（常指地）发（声），讲（话）
If someonelets loose a sound or remark, they make it, often suddenly.

e.g. Helet loose a long, deep sigh...
他突然喟然长叹了一声。
e.g. Hilllet loose a torrent of abuse against those who prosecuted his case.
希尔对控告他的人破口大骂起来。

30. tolet fly -> see fly
tolet your hair down -> see hair
tolet someone off the hook -> see hook
tolet it be known -> see known
to live andlet live -> see live
tolet the side down -> see side
tolet off steam -> see steam

31.使美中不足；使差强人意；使不理想
If somethinglets youdown, it is the reason you are not as successful as you could have been.

e.g. Many believe it was his shyness and insecurity whichlet him down...
很多人认为是他的腼腆和缺乏安全感拖了他的后腿。
e.g. Sadly, the film islet down by an excessively simple plot.
遗憾的是，过于简单的情节使得这部电影差强人意。

32.给（轮胎等）放气
If youlet down something such as a tyre, you allow air to escape from it.

e.g. Ilet the tyres down on his car...
我把他的汽车轮胎放了气。
e.g. Remove wheelnuts,let down tyre, put on spare.
拧下车轮螺母，放掉车胎的气，换上备用胎。

相关词组：let downlet downlet inlet in onlet intolet offlet onlet outlet uplet up on

let by〔pass〕 (v.+adv.)

让…过去 allow (sb/sth) to pass through
let sb/sth by〔pass〕

Let me by, please.

请让我过去。

The cars all stopped to let the fire engine by.

车辆都停下来,让消防车通过。

I shall let that remark pass.

我不会去理会那种议论。

let bygones be bygones

既往不咎,过去就算了 let the past be forgotten

let down (v.+adv.)

使…失望,失信 disappoint sb especially by breaking a promise

let go (of) (v.+v.+prep.)

松手,放弃 stop holding;give up
let go

Don't let go.

别放手。

let go sth

Don't let go the rope.

抓牢绳子,别松手。

Let go my shirt.

放开我的衬衣。

He was about to let go the arrow when someone called him.

他正要射箭,突然有人喊他。

let go of sb/sth

You're mad,Kehr!For heaven's sake, let go of me!

你疯了,凯尔!看在上帝份上,快放开我。

But I let go of it, how could it burn me?

我把它放掉了,它怎么会烫我的手?

Let go of that, please.

请把它放开。

You cross the road with Granny,Ad—and don't let go of her hand till you're on the other pavement.

艾德,你扶着奶奶过马路,等穿过马路后再放开奶奶的手。

Don't let go of the handle.

不要松开这把手。

let in (v.+adv.)

容许,接受 admit (sth)

let in for (v.+adv.+prep.)

使…卷入 cause (sb or oneself) to have sth unwanted
let sb/oneself in for sth

His illness has let us in for a lot of extra work.

他一生病,给我们增加了不少额外的负担。

I hope you realize what you're letting yourself in for!

我希望,你意识到你给自己揽了多大的麻烦!

let in on (v.+adv.+prep.)

〈非正〉让知道或参与 allow sb to share a secret or take part in sth
let sb in on sth

They have agreed to let the headmaster and three senior teachers in on the discussions.

他们已同意让校长和三位资深教师一起参加讨论。

let into (v.+prep.)

嵌入,插入 set sth into sth

let it go at that

不再管〔说〕了,到此为止 stop taking any more trouble;agree not to say any more

let loose (v.+adj.)

散开 scatter
let sb/sth loose

Jim caught Rose's arm and would not let her loose.

吉姆抓住露丝的手臂不放。

Don't let that tiger loose.

不要放开那只老虎。

She let the balloon loose and it quickly rose into the air.

她放开气球,气球很快就升上天空。

Has the dog been let loose or is it still tied up?

狗已经放了还是仍在拴着?

let sb loose

No one should let a young child loose on a car with the engine running.

谁也不应该把小孩子放在发动起来的汽车里面而不加照顾。

Who let that student loose on the class?

谁让那个学生在课堂上胡闹的?

let loose

The dark clouds are going to let loose soon.

乌云很快就会散开。

let me see

让我想想 I'm thinking or trying to remember

let off¹ (v.+adv.)

放掉〔过〕,免除 release or excuse sb from punishment;excuse from (a task or an obligation)

let off² (v.+prep.)

放掉〔过〕,免除 release;excuse sb from punishment;excuse from (a task or an obligation)
let sb off sth/v-ing

The judge decided to let the boys off the punishment that they deserved to give them a chance.

法官决定给这些男孩一个悔过自新的机会,免去他们应受的惩罚。

You're lucky that they let you off all washing-up.

你真幸运,他们免除了让你洗那些碗碟的苦差事。

The teacher told us that he would let us off our homework.

老师告诉我们不要做作业了。

She let the boy off playing piano.

她没有强迫孩子练习弹钢琴。

let on (v.+adv.)

〈非正〉泄密,透露;假装 reveal a secret;pretend;simulate
let on about sth

Don't let on about the price of the car.

不要把这辆汽车的价钱泄露出去。

Don't let on about his hiding place.

别告诉别人他躲藏的地方。

let on to-v

Don't ever let on to know me.

切记不要露出你认识我的样子。

She let on not to understand.

她假装不理解。

let on that-clause

Don't let on that I've let her into the secret.

我已把秘密告诉了她,请别说出去。

Don't let on that I saw him coming out of the shop late at night.

不要泄露我看见他深更半夜从商店里出来这件事。

He let on that he was a professor.

他冒充他是个教授。

let on to sb that-clause

Don't let on to Kehr that we are going to the movie tonight.We don't want her to know.

别把我们今晚去看电影的事告诉凯尔,我们不想让她知道。

let on for (v.+adv.+prep.)

使承担 cause to have (sth unwanted)
let oneself on for sth

He didn't know what a lot of unpaid work he was letting himself on for when he agreed to become secretary of the society.

当他同意担任该协会的秘书时,他不知道他将要做多少无报酬的工作。

let oneself go

较平常不注意外表 take less care of one's appearance than usual

let out (v.+adv.)

〈非正〉泄露秘密 allow sth to become known
let sb/oneself/sth ⇔ out (of sth)

Let me out! I'm locked in!

放我出去! 我被锁住了!

Don't trouble to see me to the door,I'll let myself out.

别麻烦送我出门了,我会自己出去的。

I'd rather not let the children out in this wet weather, for it is very easy for them to catch a cold.

在这种阴湿的天气里,我想还是不让孩子们出门,因为他们很容易感冒。

The doctors are letting mother out of hospital next week.

医生们准备让母亲下星期出院。

If neither of us wants to go to the party, we'll have to find an excuse to let us out.

如果你我都不想去参加这个聚会,我们就必须找个能使我们不去的借口。

After six years they let him out for good behaviour.

由于他表现良好,他们在关了他六年后将他释放。

Don't let the dog out.

不要把狗放出去。

Please let the water out of the bathtub.

请把浴缸里的水放掉。

If the tyres are too hard, just let some of the air out.

如果轮胎太硬,那就放点气出来好了。

Jacelin has become so fat that his wife has had to let out his trousers several inches round the waist.

杰斯林太胖了,他妻子不得不将他的裤腰放宽几英寸。

Let out the main sail, let's make use of this wind!

主帆打开,让我们乘风前进!

She let out a terrible scream.

她发出一声可怕的尖叫。

It's good to let out your feelings in a shout.

大喊大叫着发泄一下感情是有好处的。

Dade won't be let out of prison for at least six years.

达德至少要坐6年牢。

If he was given five years' imprisonment, he could be let out after three years.

要是他被判5年徒刑,他就可能在3年后出狱。

let sth ⇔ out

He used to let out cars by the day.

他惯常按日出租汽车。

In the park boats are let out for 30 fen per hour.

那公园出租小艇,每小时租金3角。

let sth ⇔ out

Don't let the fire out, will you?

别让火熄灭,好吗?

let sb ⇔ out

“The regular teacher is back, isn't he?”“Good, that lets me out!”

“那位正式教员回来了,对吗?”“好哇,那我就算解脱了。”

I was glad to be let out of that nasty affair, and have someone more experienced handle the trouble.

我真高兴能从那件棘手的事情中解脱出来,让更有经验的人去对付那个难题。

let out

Cage let out in all directions but his attackers were too strong for him.

凯奇左踢右打,但攻击他的人比他厉害得多。

let out at sb

Once he gets angry, he lets out at anyone who opposes him.

他一旦生起气来,就破口大骂反对他的人。

let out

School lets out at 3 o'clock.

学校3点放学。

The movie lets out at 11 o'clock.

这场电影11点散场。

let sth ⇔ out

Someone had let the news out.

有人把这消息泄漏出去了。

Keep this to yourself, don't let it out to the press.

你要保守秘密,别把它泄露给新闻界。

let out that/wh-clause

Mary accidentally let out that her mother had telephoned.

玛丽无意中说出她的母亲来过电话。

Jane let out where she had hidden her father's birthday present.

简无意中把藏着给父亲的生日礼物的地方说了出去。

let the cat out of the bag

We want to surprise Mother with a birthday gift;but Peter let the cat out of the bag by asking her what she would like.

我们打算送生日礼物让妈妈惊喜,可彼得因问她想要什么而让事情露了馅。

let sb/sth be

不打扰某人,不干涉某事 not disturb or interfere with sb/sth

let through¹ (v.+adv.)

让…通过 allow or accept (sb/sth) to pass through
let sb/sth through

Open the gate and let the crowd through.

把大门打开,让人们过去。

We need some partly transparent window shades to let the light through but not the heat.

我们需要一些半透明的、既能挡住热气又能透光的窗帘。

The examiners let the weak student through, but warned him that he must improve his work.

主考们让那个差学生及格了,不过也提出警告,要他一定提高学业水平。

let through² (v.+prep.)

让…通过… allow or accept (sb/sth) to pass through sth
let sb/sth through sth

Let the crowd through the gates now, the game will start soon.

让人们从各个大门进来吧,比赛马上就要开始了。

Open the curtains to let some light through the window.

拉开窗帘,让光线透进来。

Facer was let through the examination, but warned to improve his study.

费塞虽然通过了考试,但也受到警告,要提高他的学业水平。

let up (v.+adv.)

放松,减少〔弱〕 relax or lessen
let sb up

The student's here;shall I let him up?

那个学生来了,我让他上楼吗?

let up

We mustn't let up now that we have nearly achieved our object.

既然我们已快达到目标了,就不能松劲。

The rain began to let up.

雨开始下小了。

When is this hot weather going to let up?

天气这么热,什么时候才能变得凉快一些呢?

let sth ⇔ up

We have overspent.We'll have to let up our expenditures next month.

我们已经超支了,下个月一定得节约开支。

let up on (v.+adv.+prep.)

对(某人)放松〔不狠〕;在(某事)上松懈 treat (sb) less severely;work less hard at (sth)
let up on sb/sth

Let up on the child;it was an accident.

实属偶然,饶了这孩子吧。

We can't let up on our efforts to compete with other more successful firms.

在同其他那些更兴隆的公司竞争中,我们丝毫松懈不得。

let us say

比如,例如 for example

• let blood放血
• let rooms出租房间
• let the field出租土地

• let by让…过去
• let down放下,使失望,不支持,放掉(车胎的)气
• let down the curtain放下窗帘
• let down the Party辜负党的期望
• let down the window放下窗户
• let in fresh air让新鲜空气进入
• let in the rain漏雨
• let off放(炮、烟火等),放掉(气),发泄,放过,原谅
• let off a dissent发泄不满
• let off fireworks放烟火
• let on泄露,假装
• let out释放,放走,发出某种声音,出租(房屋),把(衣服)改大
• let out a dress把衣服改大
• let out a secret泄露秘密
• let out a shriek发出一声尖叫
• let out spare rooms出租多余的房间
• let the dog out让狗跑到外面去
• let out the fire让火熄灭
• let through放行,使…通过审核
• let the crowd through让人们过去

• let in for使陷入,引起麻烦
• let oneself in for trouble招来麻烦
• let sb into one's secret让某人知道其秘密
• let sb into the building让某人进楼
• let sb into the office让某人进入办公室
• let sb off the bus让某人下公共汽车
• let sb in on a secret让某人知道秘密
• let sb in on the act让某人参加此项行动
• let sb out of prison让(某人)出狱
• let the crowd through the gates让人们从各大门进来

let us, let's

let us常缩写为let's,它们之间的区别是：

1.let us可包括也可不包括说话的对象,即“让我〔咱〕们一起…”;let's则包括说话的对象在内,即“让咱们一起…”。

2.let us通常用在正式的场合,而let's则多出现在口语等非正式的场合。

3.let's的否定形式在美式英语中多用let's not,在英式英语中多用don't let's;let us的否定式在不包括对象在内时用don't let's;在包括对象在内时可用don't let us,也可用let us not。

4.let's在表示“提议”(说话人与听话人共同做某事)时,常跟shall we连用,以使语气比较婉转、客气;let us(不包括对方)在表示“请求”允许“说话人自己做某事”时,常跟will you连用,以使语气更加婉转、缓和。例如:

Let's start early, shall we?让我们早点出发,好吗?

Please let us go, will you?请让我们走,好不好?

let, let out

这两者都可作“出租”解,但其对象有差别：前者主要指房屋,后者主要指车马。

let alone, leave alone

这两个短语一般来说意思相同,可以互换。例如：

Leave〔let〕 that bag alone.It's not yours!别动那个包,那不是你的!

它们之间的区别是：

1.作“不理〔管〕而听其自然”“不烦扰”解时,多用leave alone; 作“不干涉”解时,多用let alone; 作“更不用说”解时, let alone比leave alone更正式。

2.leave alone可用于被动结构; 而let alone不常用于被动结构。

let sb go, let oneself go

这两个短语含义不同：前者译为“让某人走”或“解雇某人”;后者则指人通过言行尽情“发泄自己的感情或欲望”。例如:

The boss let his secretary go.老板把他的秘书解雇了。

The manager worked hard all week, but on Saturday night he went to countryside and let himself go.经理整周辛苦工作,周六晚上就去乡下轻松一下。

let go, leave go

这两个短语都是“松手,放开”的意思。其区别在于：

1.let go后可直接接宾语,也可接of再加宾语;而leave go后必须接of再加宾语。

2.let go可用于被动结构,而leave go一般不用于被动结构。

let, admit, allow, permit

1.admit指“允许某人进入”某场地,或加入某组织,含有勉强的意味。例如：

She opened the door reluctantly to admit the unwelcome visitor.她很不情愿地把门打开,让不受欢迎的客人进去了。

Jack was admitted to the hospital to have his tumour removed.医生收杰克住院切除肿瘤。

allow指“允许某人做…”,给予客体执行某任务的权力,或同意某人的要求,和permit同义。它们在许多场合中可以通用。不过两者的意思也有细微差别, allow的意思是“允许”,表示主体有权不阻止、不妨碍或默许某事进行的意思。例如：

Playing ball is not allowed in the park.公园内不许打球。

Parking is not allowed here.此处不准停车。

permit表示给予客体做某事的权力。例如：

Time does not permit me to stay longer.时间不容许我在这里多留一会。

let含有放任的意味。例如：

Tom's parents will not let him swim in the lake.汤姆的父母不让他在湖里游泳。

2.permit 后可接不定式和动名词,但不可接名词从句; let不用动名词作宾语,其宾语后接动词原形。

3.allow还表示客气的请求,可和let通用。例如：

Allow me to〔Let me〕 thank you on behalf of our factory.请允许我代表全厂职工向你致谢。

permit是书面语,比allow带有更庄重、正式的语言色彩,含有正面的、积极的意义,指“同意某人的要求、给予某人做…的权力”。例如：

The facts permit no other explanations.这些事实不容许作其他解释。

let 是口头语。例如：

We won't let such a thing happen again.我们绝不允许再发生这样的事。

let, hire, rent

这组词的共同意思是“租”“租用”“雇用”。其区别是：

1.就租进、租出来说, let是租出, rent和hire则既可以是租进,也可以是租出。例如:

Will you rent me your boat for the weekend?小船租给我度周末好吗?

The house lets for 80 yuan a month.这房子出租,租金一个月80元。

2.就租期长短来说, hire强调临时性, let强调长期性,而rent既可以是长期的,也可以是临时的。例如:

During the holidays we hired a boat and went fishing.假期我们租了一条船去钓鱼。

We're hoping to let this field.我们希望把这块地租出去。

She rents out rooms to students.她把房间出租给学生。

3.就宾语来说, hire多用于对人的雇用, let和rent则着重于租物。例如:

The store hired two clerks for the sale.这家商店为了这次廉价销售雇了两名店员。

The farmers near cities are working part of their land themselves and are letting the rest.城区附近的农民自己耕种一部分土地,出租其余的部分。

He rented a colour TV soon after moving in.搬进后不久他就租了一台彩色电视机。

4.hire在表示租某物时,在英国,一般指租汽车、船只等; let指出租房屋、地产; rent在英式英语中指较长时间租入或租出房屋、商店或土地,在美式英语中可指长时间或短时间租用各类资本或日用品,这一意义现已影响到英国。例如:

Why don't you hire out your car to your neighbours while you're away, and earn some money?你不在家时为何不将你的汽车租给你的邻居,挣点钱呢?

I asked her if she had any room to let.我问她有没有房间出租。

I'm thinking of renting out my house while I'm away.我正在考虑在我离家期间把房子租出去。

5.hire有时可表示“受雇”,而let和rent无此义。

下面两个句子意思不同：

Let me know when you are back.

你回来时,请告诉我。

Let me know when you'll be back.

请告诉我,你什么时候回来。

allow，let，permit，leave，authorize

这些动词均含“让、允许”之意。

allow普通用词，侧重听任、默许或不加阻止。在正式场合可用来表客气的请求。

let常用词，用于各种非正式场合，语气最弱，指允许或无力阻止某事，暗示漠不关心或听之任之。

permit正式用词，在多数场合可与allow换用，语义最强，指准许某人做某事，含权威或正式的意味。

leave侧重不加干涉。

authorize语气最强，指权威性的允许与认可。

allow，let

二者均可作“允许”解，但各有侧重：

allow重在“允许”或“容许”，也可表示客气的请求，常用于allow sb．to do sth．或allow doing sth．结构中。

let作“允许”或“让”解，主要用于口语，一般可与allow互换。作“允许”解时，常暗含“听任”、“默许”之意；作“让”解时，常含“祈使”或“建议”之意。注意：let之后作宾补的不定式不带to，且不可用于被动语态，而allow则相反。