Explanation at your level:
You use by to talk about who did something. For example, 'This picture is by me.' You also use it for travel: 'I go to school by bus.' It is a very helpful word for your daily life.
At this level, you can use by to describe how you do things. 'I learned English by watching movies.' It is also used to show location, like 'The house is by the river.' Keep practicing these simple patterns!
As you move to intermediate English, you will use by with passive voice more often. 'The report was finished by the team.' You can also use it to express deadlines, like 'I will finish this by Friday.' It is a great way to sound more precise.
At the upper-intermediate level, you will notice by in more complex structures. We use it to show the degree of difference, such as 'He is taller by two inches.' You will also encounter it in many common idioms that add nuance to your speech.
Advanced learners use by to connect complex ideas. You might use it in academic writing to explain the mechanism behind a phenomenon: 'The process is accelerated by the introduction of a catalyst.' It provides a formal, logical flow to your arguments and descriptions.
At the mastery level, you will appreciate the subtle, almost poetic uses of by. It can imply closeness or accompaniment in literary contexts. Understanding its etymological roots helps you see why it functions as both a spatial marker and an agentive preposition across diverse linguistic registers.
واژه در 30 ثانیه
- Shows agent in passive voice.
- Indicates method of transport.
- Used for deadlines.
- Means proximity.
Hey there! Let's talk about the word by. It is one of those tiny words that does a massive amount of work in English. At its core, by is a preposition that connects ideas, showing us the 'who' or the 'how' of a situation.
You will see it most often when someone is talking about an action. For example, if a book was written by your favorite author, it tells you the source. It also helps us talk about travel methods, like going by bus or by plane. It is super useful and you'll find it everywhere!
The word by has roots that go way back to Old English, specifically the word bī. It is a Germanic cousin to words in languages like Dutch and German. Back in the day, it was used primarily to show location, meaning 'near' or 'alongside.'
Over centuries, its usage expanded. As English evolved, by started taking on more abstract meanings, like showing the method of doing something. It is fascinating how a simple word for 'next to' became the go-to word for identifying the creator of a masterpiece or the method of transportation!
Using by correctly is all about context. When you are talking about passive actions, it is essential. You might say, 'The cake was baked by my grandmother.' It sounds natural and clear.
In terms of register, by is very flexible. It is perfectly fine in a casual chat with friends or in a formal academic paper. You will often see it paired with verbs of creation or movement. Just remember: if you are talking about a specific person doing an action, by is your best friend.
English is full of fun phrases using by. One common one is 'by the way', which we use to introduce a new topic. Another is 'by and large', meaning generally speaking.
You might also hear 'by heart', which means to memorize something perfectly. Then there is 'by all means', a polite way to say 'yes, please do.' Finally, 'by the book' means following the rules exactly as they are written.
Grammatically, by is a preposition, so it is usually followed by a noun or a gerund (a verb ending in -ing). You would say 'by car' or 'by running.' It does not have a plural form because it is a function word.
Pronunciation is simple: it rhymes with 'my,' 'sky,' and 'fly.' In both British and American English, it is pronounced /baɪ/. The stress is always on that single syllable. It is a short, sharp sound that is very easy to master!
Fun Fact
It has been in the language since before the 12th century.
Pronunciation Guide
Short and crisp.
Identical to UK.
Common Errors
- pronouncing it like 'bee'
- adding extra syllables
- stressing the wrong part
Rhymes With
Difficulty Rating
easy
easy
easy
easy
What to Learn Next
Prerequisites
Learn Next
پیشرفته
Grammar to Know
Passive Voice
It is done by...
Prepositions of Place
By the door
Gerunds
By running
Examples by Level
This book is by my friend.
This book / is / by / my friend.
Agent identification.
I go to work by train.
I / go / to work / by / train.
Method of travel.
She sits by the window.
She / sits / by / the window.
Proximity.
The cake was made by Mom.
The cake / was made / by / Mom.
Passive voice.
He walked by the park.
He / walked / by / the park.
Movement past a location.
I learn by listening.
I / learn / by / listening.
Method of learning.
Stand by me.
Stand / by / me.
Proximity.
It is written by him.
It / is written / by / him.
Agent identification.
I finished the work by noon.
She is sitting by the door.
We traveled by boat across the lake.
The song was sung by a famous star.
He is standing by the fireplace.
You can reach me by phone.
The house is by the sea.
The article was edited by the teacher.
The decision was made by the committee.
He improved his score by studying hard.
She lives by the rules.
The package arrived by courier.
We passed by the old museum.
The room is heated by solar power.
He is taller by a few centimeters.
The project was completed by the deadline.
The law was passed by a narrow margin.
She succeeded by sheer determination.
The house is situated by the lake.
The error was caused by a system failure.
I am by no means an expert.
The painting was created by a local artist.
He stood by his promise.
The city was destroyed by an earthquake.
The outcome was influenced by external factors.
He is, by all accounts, a genius.
The theory is supported by empirical evidence.
The change was brought about by new policies.
She sat by the fire, lost in thought.
The result was achieved by careful planning.
The company is run by a board of directors.
The path goes by the ancient ruins.
The poem is characterized by its rhythmic structure.
He was, by turns, angry and amused.
The mystery remains unsolved by modern science.
The house stood by the cliff's edge.
She was guided by her intuition.
The agreement was signed by both parties.
The light was filtered by the curtains.
The work is marked by exceptional quality.
ترکیبهای رایج
Idioms & Expressions
"by the book"
following rules exactly
He does everything by the book.
neutral"by and large"
generally speaking
By and large, it was a good day.
neutral"by all means"
certainly
By all means, come in!
polite"by a hair"
very closely
He won by a hair.
casual"by the skin of one's teeth"
barely succeeding
I passed by the skin of my teeth.
idiomatic"by leaps and bounds"
very quickly
Her English improved by leaps and bounds.
neutralEasily Confused
both mean near
beside is more specific
He sat by/beside me.
same sound
buy is a verb
I will buy it.
same sound
bye is a greeting
Goodbye!
both show method
with is for tools
Cut with a knife.
Sentence Patterns
Subject + passive verb + by + agent
It was done by him.
By + gerund
By studying, I learned.
By + time
Finish by 5 PM.
By + transport
I travel by car.
Subject + is + by + location
He is by the door.
خانواده کلمه
Nouns
مرتبط
How to Use It
10
Formality Scale
اشتباهات رایج
By indicates a deadline, not a duration.
By is general, beside is very close.
You need 'by' to show the agent.
Past is better for movement.
No article with transport.
Tips
Memory Palace Trick
Imagine a 'B' standing next to you.
When Native Speakers Use It
For deadlines and transport.
Cultural Insight
Very common in legal documents.
Grammar Shortcut
By + -ing for method.
Say It Right
Rhymes with fly.
Don't Make This Mistake
Don't use 'by' for duration.
Did You Know?
It's one of the most common words.
Study Smart
Use flashcards for idioms.
Memorize It
Mnemonic
By = B-Y (Be Yourself)
Visual Association
A person standing next to a big letter B.
Word Web
چالش
Write 5 sentences using 'by' today.
ریشه کلمه
Old English
Original meaning: near, close to
بافت فرهنگی
None.
Used constantly in daily life for everything from directions to passive descriptions.
Practice in Real Life
Real-World Contexts
work
- done by me
- by the deadline
- by email
school
- written by
- by heart
- learn by doing
travel
- by bus
- by train
- by air
daily life
- by chance
- by the way
- by accident
Conversation Starters
"How do you get to work?"
"What is a book you know by heart?"
"Do you prefer traveling by train or plane?"
"Have you ever met someone by chance?"
"What is a rule you live by?"
Journal Prompts
Describe your daily commute by listing the transport you use.
Write about a time you did something by accident.
What is something you have learned by doing it yourself?
Explain a rule you follow by the book.
سوالات متداول
8 سوالYes, it is.
Yes, to show a deadline.
It is neutral and used everywhere.
Usually no for transport.
No, it rhymes with 'my'.
Yes.
The person doing the action.
No, it is a preposition.
خودت رو بسنج
The cake was made ___ my mom.
By shows the agent.
Which sentence is correct?
No article for transport.
Does 'by' always mean 'next to'?
It also indicates agent and method.
Word
معنی
Idiom matching.
Passive voice structure.
امتیاز: /5
Summary
By is a versatile word for agents, methods, and location.
- Shows agent in passive voice.
- Indicates method of transport.
- Used for deadlines.
- Means proximity.
Memory Palace Trick
Imagine a 'B' standing next to you.
When Native Speakers Use It
For deadlines and transport.
Cultural Insight
Very common in legal documents.
Grammar Shortcut
By + -ing for method.
Related Content
این کلمه در زبانهای دیگر
واژههای بیشتر academic
입체적
B2Having a three-dimensional effect or examining something from multiple perspectives rather than a single flat view. It implies a comprehensive and detailed analysis.
~에 관해
B1About, concerning.
~에 대하여
A2Concerning or regarding a particular subject; about.
~대해
A2About; concerning; regarding.
~에 관하여
A2Regarding, concerning, about (a topic).
~에 대해(서)
A1Indicates the topic or subject of discussion, meaning 'about' or 'regarding'.
무엇보다
A2More than anything else; above all.
결석생
A2A student who is absent from class.
추상
A2Abstraction; the quality of dealing with ideas rather than events.
추상화하다
B2To consider something theoretically or separately from its physical reality. It involves extracting general principles from specific examples.
