Let-he vs. I-know: Qual é a diferença?
me ou him, nunca de sujeito como I ou he.
Grammar Rule in 30 Seconds
Use object pronouns (him/her/them) after 'let', but subject pronouns (he/she/they) when they are the main subject of a verb like 'know'.
- Always use 'him', 'her', or 'them' after 'let' (e.g., 'Let him speak').
- Use 'he', 'she', or 'they' before 'know' (e.g., 'He knows the answer').
- Never say 'Let he' or 'Him knows' in standard modern English.
Overview
let. Muitos estudantes brasileiros, ao atingirem o nível B1, ainda se sentem confusos na hora de escolher entre pronomes do caso reto (subject pronouns), como I, he, she, e pronomes do caso oblíquo (object pronouns), como me, him, her. O ponto crucial aqui é entender a função sintática: quem realiza a ação (sujeito) e quem a recebe (objeto).let (deixar/permitir) é um verbo transitivo. Isso significa que ele exige um complemento, ou seja, um objeto direto.Let me go, o me é o objeto que recebe a permissão. O erro comum de dizer *Let he go acontece porque o falante de português, acostumado com a flexibilidade da nossa língua, esquece que, após let, o pronome *sempre* deve estar na forma de objeto. Dominar isso não é apenas uma regra decorada; é entender a lógica da frase.let me, let him ou let them vai fazer você soar muito mais natural e preciso. Vamos desmistificar isso agora!let é um verbo que pede um objeto direto. Pense nele como uma ponte: ele precisa de alguém do outro lado para receber a ação de permitir.I, you, he, she, it, we, they | Eu, você, ele, ela, ele/ela, nós, eles |me, you, him, her, it, us, them | Mim/me, você/te, ele/o/lhe, ela/a/lhe, ele/ela, nós/nos, eles/os |you e it não mudam, o que facilita, mas I vira me, he vira him, e she vira her. O erro clássico do brasileiro é usar o pronome de sujeito onde deveria estar o de objeto. Além disso, existe uma regra de ouro: após o objeto, o próximo verbo deve estar no infinitivo sem o to (o chamado *bare infinitive*).Let him to go, está errado! O correto é Let him go. É como se o let roubasse o to do verbo seguinte.deixe ele ir, onde ir é o infinitivo. Em inglês, a estrutura é Let + objeto + verbo base. Isso é muito comum com verbos de percepção e causativos, como make e see, mas o let é o mais frequente no dia a dia, seja combinando um Uber ou decidindo algo em uma reunião de trabalho.let(s) + Pronome Objeto + Verbo Base. Veja abaixo como isso se organiza:let | Objeto | Verbo Base | Exemplo |I let him stay. |She lets me help. |We let them eat. |They let us leave. |he, she, it), usamos lets no presente simples. Para os outros, let. O Let's que usamos tanto é apenas uma contração de Let us, onde o us é o pronome objeto.Let's go (Deixe-nos ir), e nunca Let's to go. A estrutura é simples: se você quer dar uma sugestão ou pedir permissão, siga essa ordem e você nunca vai errar.- 1Permissão: Quando você quer dizer que alguém tem autorização.
Meu chefe me deixa sair mais cedo
viraMy boss lets me leave early. Note ome(objeto) eleave(verbo base). - 2Sugestões: O famoso
Let's.Vamos comer uma pizza
viraLet's eat pizza. É a forma mais comum de propor algo em uma conversa com amigos. - 3Pedidos polidos: Quando você quer oferecer ajuda ou pedir um espaço.
Deixe-me ver o que posso fazer
se traduz comoLet me see what I can do. Em um contexto de trabalho, usarLet me explainsoa muito mais profissional e educado do que apenas começar a falar. - 4Causar um estado:
Não deixe o problema crescer
->Don't let the problem become a big issue. Aqui,the problemfunciona como o objeto.
- 1Troca de Sujeito por Objeto: O erro mais comum é dizer
*Let he goou*Let she help. Isso acontece por interferência do português, ondeelepode ser sujeito ou objeto em certas construções informais. Lembre-se: depois delet, sempre use a forma de objeto (him,her). - 2Uso do
toantes do verbo: Muitos brasileiros dizem*Let me to go. Isso acontece porque, em português, usamos a preposiçãoparaou o infinitivo direto. Em inglês, oletnão aceita oto. Élet me go, ponto final. - 3Confusão com
I know: Às vezes o aluno confunde a estruturaLet me(deixe-me) comI know(eu sei). Por exemplo, dizer*Let I knowem vez deLet me know. O erro vem de pensar que, comoeué quem vai saber, deve-se usarI. Mas se você está pedindo para alguém te avisar, você é o objeto da ação deavisar. Portanto,Let me knowé a forma correta.
let com verbos que exigem o to no infinitivo, como allow ou permit.let | Verbo + Objeto + Verbo Base | Let me go. |allow | Verbo + Objeto + to + Verbo | Allow me to go. |permit | Verbo + Objeto + to + Verbo | Permit me to go. |let é informal e direto, allow e permit são mais formais e sempre pedem o to. Sacou a diferença? Let é para o dia a dia, allow é para documentos ou situações formais.- 1Posso usar
letno passado? Sim! O passado deletélet. Por exemplo:Yesterday, she let me stay at her house.Não muda nada, o que é uma maravilha! - 2
Let'spode ser usado na negativa? Sim, usamosLet's not. Exemplo:Let's not fight about this.É bem comum em discussões de família ou trabalho. - 3Existe diferença entre
Let meeLet's? Sim.Let meé um pedido ou ação individual (Deixe-me), enquantoLet'sé um convite coletivo (Vamos/Deixe-nos).
Pronoun Case Selection
| Person | Subject (with Know) | Object (with Let) | Example with Let | Example with Know |
|---|---|---|---|---|
|
1st Sing.
|
I
|
me
|
Let me go.
|
I know him.
|
|
2nd Sing.
|
you
|
you
|
Let you be.
|
You know me.
|
|
3rd Sing. (M)
|
he
|
him
|
Let him stay.
|
He knows it.
|
|
3rd Sing. (F)
|
she
|
her
|
Let her speak.
|
She knows us.
|
|
1st Plur.
|
we
|
us
|
Let us (Let's) eat.
|
We know them.
|
|
3rd Plur.
|
they
|
them
|
Let them try.
|
They know why.
|
Common Contractions
| Full Form | Contraction | Usage Note |
|---|---|---|
|
Let us
|
Let's
|
Used for suggestions (Let's go!)
|
|
He knows
|
He's known
|
Present perfect (He has known)
|
|
Do not let
|
Don't let
|
Negative imperative
|
|
Does not know
|
Doesn't know
|
Negative declarative
|
Meanings
This rule distinguishes between the causative/imperative use of 'let' (which requires an object pronoun) and the declarative use of 'know' (which requires a subject pronoun).
Permission/Causative
Using 'let' to allow someone to do something or to suggest an action.
“Let her finish her sentence.”
“Don't let them enter the room yet.”
Assertion/Knowledge
Using 'know' to state that a subject possesses information.
“He knows exactly what happened.”
“They know how to fix the car.”
Idiomatic Suggestions
Using 'Let's' as a contraction for 'Let us' to make a group proposal.
“Let's go to the beach!”
“Let's not talk about that right now.”
Reference Table
| Pronome Sujeito (Quem faz) | Pronome Objeto (Quem recebe) | Exemplo Correto com 'Let' |
|---|---|---|
|
`I`
|
`me`
|
Please let **me** know.
|
|
`He`
|
`him`
|
The coach let **him** play.
|
|
`She`
|
`her`
|
Did you let **her** in?
|
|
`We`
|
`us`
|
He won't let **us** fail.
|
|
`They`
|
`them`
|
Let **them** try to fix it.
|
|
`You`
|
`you`
|
I'll let **you** decide.
|
|
`It`
|
`it`
|
Don't let **it** fall.
|
Espectro de formalidade
Please permit him to enter the premises. (Security/Home)
Let him come in. (Security/Home)
Let him in. (Security/Home)
Let 'im in. (Security/Home)
Papéis dos Pronomes
Sujeito (Quem faz)
- I, he, she, we, they e.g., **He** knows the way.
Objeto (Quem recebe)
- me, him, her, us, them e.g., Let **him** go.
Pronomes Sujeito vs. Objeto
Escolhendo o Pronome Certo
O pronome vem logo após o verbo 'let'?
Casos de Uso dos Pronomes
Use Antes do Verbo
- • `I` go
- • `He` runs
- • `They` study
Use Após o 'Let'
- • Let `me` go
- • Let `him` run
- • Let `them` study
Use Após Preposições
- • For `me`
- • With `him`
- • About `them`
Exemplos por nível
Let's go to the park.
Let's go to the park.
I know your name.
I know your name.
Let him play.
Let him play.
He knows me.
He knows me.
Don't let her cry.
Don't let her cry.
She knows the answer.
She knows the answer.
Let them come inside.
Let them come inside.
They know we are here.
They know we are here.
Let him decide; he knows what he wants.
Let him decide; he knows what he wants.
If you let her help, she will feel better.
If you let her help, she will feel better.
We know they are busy, so let's not bother them.
We know they are busy, so let's not bother them.
Let us know if you need anything.
Let us know if you need anything.
Rather than forcing the issue, let him come to his own conclusion.
Rather than forcing the issue, let him come to his own conclusion.
She knows full well that we can't let them stay past midnight.
She knows full well that we can't let them stay past midnight.
Let it be known that he knows nothing of our plans.
Let it be known that he knows nothing of our plans.
Don't let their opinions discourage you; you know your worth.
Don't let their opinions discourage you; you know your worth.
Let him who is without sin cast the first stone, for he knows the weight of guilt.
Let him who is without sin cast the first stone, for he knows the weight of guilt.
Should they refuse to cooperate, let them face the consequences.
Should they refuse to cooperate, let them face the consequences.
He knows the intricacies of the law, so let him handle the negotiations.
He knows the intricacies of the law, so let him handle the negotiations.
Let us not pretend that she knows more than she actually does.
Let us not pretend that she knows more than she actually does.
The director was adamant: let them flounder if they must, provided they know the risks.
The director was adamant: let them flounder if they must, provided they know the risks.
Let there be no doubt that he knows exactly where the bodies are buried.
Let there be no doubt that he knows exactly where the bodies are buried.
To let him believe otherwise would be a disservice, as he knows the truth deep down.
To let him believe otherwise would be a disservice, as he knows the truth deep down.
Let us delve into the archives; she knows where the key is hidden.
Let us delve into the archives; she knows where the key is hidden.
Fácil de confundir
Learners often use 'leave' when they mean 'allow' (e.g., 'Leave me go').
Both are causative, but 'let' is about permission while 'make' is about force.
They mean the same thing but have different grammar.
Erros comuns
Let he go.
Let him go.
Him knows.
He knows.
Let's we go.
Let's go.
Let me to help.
Let me help.
Don't let they see.
Don't let them see.
She know him.
She knows him.
Let her to speak.
Let her speak.
Let him who knows tell us.
Let him who knows tell us.
I let him to know the truth.
I let him know the truth.
He let her knows.
He let her know.
Let he who is without sin...
Let him who is without sin...
Padrões de frases
Let ___ (object) ___ (verb).
___ (subject) knows that ___.
Don't let ___ (object) ___ (verb) until ___.
If you let ___ (object) ___ (verb), ___ (subject) will know ___.
Real World Usage
Let me know when u r here.
I know I can contribute to this team if you let me show my skills.
Let them hate, she knows she's iconic.
Let us through, we know our flight is boarding.
Let him leave it at the door, he knows the code.
Let's get the pizza, everyone knows it's the best.
A pista do 'Let's'
Cuidado com o 'And I'
Let you and me talk.
Pense no 'Recebedor'
Let them enter the room.
Alerta de Linguagem Antiga
Let him who is without sin.
Smart Tips
Stop! Think of the word 'him'. If you can't say 'Let him', you shouldn't say 'Let he'.
Use 'Let me know' instead of 'Tell me'. It sounds more polite and professional.
Remember it's a group activity. If you are alone, use 'Let me'.
The pronoun between them must be an object, but the pronoun before 'know' in a new clause must be a subject.
Pronúncia
Let's Contraction
The 's' in 'Let's' is pronounced as /s/, not /z/.
Let him Reduction
In fast speech, the 'h' in 'him' is often dropped.
Imperative Let
Let him GO! ↘
A strong command or insistence.
Memorize
Mnemônico
Let the OBJECT in; the SUBJECT KNOWS the way.
Associação visual
Imagine a gatekeeper named 'Let' who only allows people carrying 'Object' bags (him, her, them) to pass. Next to him is a wise man named 'Know' who only talks to 'Subject' kings (he, she, they).
Rhyme
After Let, use Him or Her. Before Know, use He or She, for sure!
Story
A king (He) knows where the treasure is. He tells the guard, 'Let him (the servant) go find it.' The king is the subject who knows, but the servant is the object being let go.
Word Web
Desafio
Write 5 sentences about your family using 'Let' and 'Know' correctly (e.g., 'I let him cook because he knows the recipe').
Notas culturais
Using 'Let's' is the most common way to make a suggestion without sounding bossy. It implies equality.
You might hear 'Let us' used more formally in religious contexts, whereas 'Let's' is universal.
The phrase 'Let him be' is a common way to say 'Leave him alone'.
The word 'let' comes from the Old English 'lætan', meaning to leave, allow, or bequeath. 'Know' comes from 'cnawan', meaning to perceive or recognize.
Iniciadores de conversa
Let's decide on a movie. Do you know any good ones?
If you could let anyone in the world lead your country, who would it be?
Let's talk about your future. What do you know for sure?
Do you let your friends borrow your car? Why or why not?
Temas para diário
Erros comuns
Test Yourself
The coach won't let ___ play until his knee is better.
Find and fix the mistake:
Please let she know that I'll be late.
Escolha a frase correta:
Score: /3
Exercicios praticos
8 exercisesLet ___ finish his work; ___ knows what he is doing.
Which sentence is correct?
Find and fix the mistake:
She let he stay because she knows him.
He is allowed to leave.
A: Should I tell him? B: No, don't let ___ know yet.
Select the correct group.
You should use 'to' after the word 'let'.
He -> ?, They -> ?, We -> ?
Score: /8
Practice Bank
14 exercisesCould you let ___ borrow your pen for a second?
Don't let ___ boss you around like that!
Her parents let she and her brother use the car.
Escolha a frase correta:
Traduza para o inglês: 'Deixe-me pensar um momento.'
Ordene as palavras para formar a frase:
Combine o sujeito com sua forma de objeto:
Just let ___ know what you decide.
Let he and I figure it out ourselves.
Ordene as palavras:
Qual frase é usada para fazer uma sugestão?
Traduza: 'O policial deixou ele ir com uma advertência.'
Combine as partes das frases:
Ordene as palavras:
Score: /14
Perguntas frequentes (8)
'Let's' is a contraction of `Let us`. In modern English, we use the contraction for suggestions and the full form only for very formal permission.
This is a famous biblical quote. While it uses `he` (subject), it is considered archaic. In modern conversation, you should always use `him`.
It can be both! Context matters. If a boss says it, it's a command. If a friend says it about a bad boyfriend, it's a suggestion.
`Let him` is followed by a base verb (`Let him go`). `Allow him` is followed by 'to' (`Allow him to go`).
This is actually grammatically incorrect (it should be 'you and me'), but it is a common mistake even among native speakers.
Yes, if it is the main verb of the clause. For example, `He knows` or `They know`.
Yes! You can say `Let the water boil` or `Let it be`.
It is neutral. It's perfectly fine for both business emails and texting friends.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
Dejar / Que + Subjunctive
Spanish uses subject pronouns in 'que' clauses.
Laisser / Faire
Pronoun placement is before or after the verb depending on the mood.
Lassen
German case marking is more distinct on nouns, not just pronouns.
〜させる (Saseru)
Japanese is synthetic (verb endings), English is analytic (separate words).
دع (Da') / خلّي (Khalli)
Arabic pronouns are attached as suffixes to the verb.
让 (Ràng)
Lack of case inflection in Chinese.
Learning Path
Prerequisites
Vídeos relacionados
Sunflower Caesar Salad | Food Wishes
British Chefs Judge American Fish & Chips (ft. Fallow) | With Babish
The Start of WW1 | Frightful First World War | Horrible Histories
Pronomes de Objeto em Inglês
Mairo Vergara
Pronomes Pessoais: Subject vs Object
English in Brazil
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