شرطی صفر: حقایق و دستورالعملها
Grammar Rule in 30 Seconds
The Zero Conditional expresses facts, scientific laws, and habits that are always true when a specific condition is met.
- Use Present Simple in both clauses: 'If you heat ice, it melts.'
- Use 'when' instead of 'if' for things that happen regularly: 'When it rains, the grass gets wet.'
- Use a comma only if the 'if' clause comes first: 'If it rains, I stay home.'
مرور کلی
Zero Conditional یکی از پرکاربردترین و در عین حال منطقیترین ساختارهای دستوری است. ما از این ساختار برای بیان حقایق علمی، واقعیتهای کلی، عادتهای همیشگی و دستورالعملهای قطعی استفاده میکنیم. در زبان فارسی، ما برای بیان چنین مفاهیمی معمولاً از جملات شرطی ساده با استفاده از «اگر» یا «وقتی که» استفاده میکنیم، اما تفاوت ظریفی وجود دارد.Zero Conditional انگلیسی همخوانی دارد. برای مثال، وقتی میگوییم «اگر باران ببارد، زمین خیس میشود»، این یک حقیقت غیرقابلانکار است. در انگلیسی هم دقیقاً همین ساختار را داریم: If it rains, the ground gets wet.Zero Conditional به «قطعیت» میپردازد. این ساختار به شما کمک میکند تا به عنوان یک فارسیزبان، حقایق علمی یا تجربیات تکرارپذیر خود را با دقت و اعتمادبهنفس بیشتری بیان کنید. در محیطهای کاری یا دانشگاهی، دانستن این ساختار برای توضیح فرآیندها یا قوانین ضروری است.Zero Conditional بر پایه «قطعیت مطلق» بنا شده است. در دستور زبان انگلیسی، این ساختار زمانی به کار میرود که یک شرط، همیشه و بدون استثنا به یک نتیجه مشخص منجر شود. معادل دقیق آن در فارسی، جملات شرطی نوع اول (در اصطلاح سنتی فارسی) است که در آن هر دو بخش جمله (شرط و جزا) در زمان حال بیان میشوند.burn در زمان حال ساده به کار میرود: When I drink hot tea, my tongue burns. توجه کنید که در اینجا هیچ خبری از will نیست. بسیاری از فارسیزبانان به دلیل عادت به ساختارهای آیندهنگر، تمایل دارند از will استفاده کنند که در این ساختار کاملاً اشتباه است.if یا when به همراه زمان present simple در هر دو بخش جمله.If you heat ice, it melts. |Ice melts if you heat it. |- اگر جمله با
Ifشروع شود، حتماً بعد از بخش شرطی باید ویرگول (,) بگذارید. - اگر جمله با بخش نتیجه شروع شود، نیازی به ویرگول نیست.
- در جملات دستوری، میتوان از
imperative(فعل امری) استفاده کرد:If you are tired, go to sleep.
- 1حقایق علمی و قوانین طبیعت: هرگاه بخواهید موضوعی را بگویید که در تمام دنیا صادق است. مثال:
If you freeze water, it turns into ice. - 2عادتهای شخصی و روتینهای روزمره: برای توصیف کارهایی که همیشه در شرایط خاص انجام میدهید. مثال:
When I am stressed, I drink tea.(در اینجا به فرهنگ چایخوری اشاره داریم که در لحظات استرسزا برای ما ایرانیها بسیار رایج است). - 3دستورالعملها و راهنماها: در محیطهای کاری یا هنگام کار با ابزارها. مثال:
If the alarm rings, leave the building immediately. - 4تعریف مفاهیم: وقتی میخواهید ویژگی ذاتی چیزی را بیان کنید. مثال:
If a person is a vegetarian, they don't eat meat.
- 1استفاده از
willدر بخش شرط: فارسیزبانان به دلیل تداخل زبان مادری (L1 Interference) تمایل دارند در هر دو بخش جمله از زمان آینده استفاده کنند (مثلاً: اگر بروی، خواهم آمد). در انگلیسی، استفاده ازwillدر بخشifدرZero Conditionalکاملاً غلط است. - 2اشتباه گرفتن با
First Conditional: بسیاری از زبانآموزان تفاوت بین یک حقیقت کلی و یک احتمال آینده را درک نمیکنند. اگر بگوییدIf it rains, I will stay home، یعنی برای بارانِ احتمالی در آینده تصمیم گرفتهاید (First Conditional)، اماIf it rains, the ground gets wetیک حقیقت همیشگی است. - 3حذف فاعل: چون فارسی یک زبان
pro-dropاست (ما فاعل را حذف میکنیم، مثلاً «میروم» به جای «من میروم»)، زبانآموزان گاهی فاعل را در انگلیسی حذف میکنند که باعث میشود جمله از نظر دستوری ناقص باشد.
If you touch fire, you get burned. | If you touch that fire, you will get burned. |- 1آیا میتوانم همیشه به جای
ifازwhenاستفاده کنم؟ بله، درZero Conditionalاین دو تقریباً هممعنی هستند، اماwhenبر تکرار و زمان وقوع تأکید بیشتری دارد. - 2آیا ترتیب جملات مهم است؟ خیر، معنا تغییر نمیکند، فقط جای ویرگول تغییر میکند.
- 3آیا میتوانم از افعال مُدال مثل
canیاmustاستفاده کنم؟ بله، در بخش نتیجه برای بیان توانایی یا ضرورت میتوان از آنها استفاده کرد، مثلاً:If you finish your work, you can go home.
Zero Conditional Structure
| Clause Type | Conjunction | Subject | Verb Tense | Example |
|---|---|---|---|---|
|
Condition Clause
|
If / When
|
You
|
Present Simple
|
If you heat ice,
|
|
Result Clause
|
(None)
|
It
|
Present Simple
|
it melts.
|
|
Negative Condition
|
If
|
You
|
Present Simple (Neg)
|
If you don't eat,
|
|
Negative Result
|
(None)
|
You
|
Present Simple (Neg)
|
you don't grow.
|
|
Question Form
|
If
|
You
|
Present Simple
|
Do you get sick if you eat nuts?
|
Common Contractions in Zero Conditional
| Full Form | Contraction | Usage Example |
|---|---|---|
|
do not
|
don't
|
If you don't study, you fail.
|
|
does not
|
doesn't
|
If it doesn't rain, plants die.
|
|
I am
|
I'm
|
If I'm late, I call.
|
|
it is
|
it's
|
If it's hot, I swim.
|
Meanings
A grammatical structure used to talk about general truths, scientific facts, or things that are always certain to happen under specific conditions.
Scientific Facts
Describing laws of nature or scientific certainties.
“If water reaches 100 degrees, it boils.”
“If you freeze water, it becomes a solid.”
Habits and Routines
Describing personal rules or automatic reactions to situations.
“If I wake up late, I miss the bus.”
“When I'm tired, I drink coffee.”
Instructions and Commands
Giving orders or advice based on a specific condition.
“If the alarm rings, leave the building immediately.”
“Call me if you need help.”
Reference Table
| نوع | ساختار | مثال | کاربرد |
|---|---|---|---|
|
حقیقت
|
If + Present Simple, Present Simple
|
If you heat ice, it melts.
|
حقایق کلی/علمی
|
|
دستورالعمل
|
If + Present Simple, Imperative
|
If it rains, take an umbrella.
|
دادن آدرس/فرمان
|
|
عادت
|
When + Present Simple, Present Simple
|
When I wake up, I drink water.
|
روتین شخصی
|
|
قانون
|
If + Present Simple, Present Simple
|
If you're late, you lose points.
|
مقررات استاندارد
|
|
تکنولوژی/اپلیکیشن
|
If + Present Simple, Present Simple
|
If you click 'Post', it goes live.
|
عملکرد اپلیکیشن
|
|
اجتماعی
|
If + Present Simple, Present Simple
|
If you ask nicely, she says yes.
|
الگوهای اجتماعی کلی
|
طیف رسمیت
If one consumes caffeine late in the evening, sleep is often elusive. (Health advice)
If you drink coffee late at night, you don't sleep well. (Health advice)
Drink coffee late, you don't sleep. (Health advice)
Late coffee = no sleep. (Health advice)
The World of Zero Conditionals
Scientific Facts
- Boiling Water If you heat water, it boils.
- Gravity If you drop an object, it falls.
Daily Habits
- Coffee If I wake up, I drink coffee.
- Exercise If I have time, I run.
Zero vs. First Conditional
Is it a Zero Conditional?
Is it always true?
Is it a future possibility?
Usage Scenarios
Nature
- • Ice melts
- • Plants grow
- • Sun sets
Technology
- • Battery dies
- • Screen lights up
- • Error occurs
مثالها بر اساس سطح
If you heat ice, it melts.
If you heat ice, it melts.
If I am tired, I sleep.
If I am tired, I sleep.
If it rains, the grass is wet.
If it rains, the grass is wet.
If you are hungry, eat an apple.
If you are hungry, eat an apple.
When it rains, I stay at home.
When it rains, I stay at home.
If you don't eat, you get thin.
If you don't eat, you get thin.
Does water boil if you heat it to 100 degrees?
Does water boil if you heat it to 100 degrees?
If my mom cooks, the food is great.
If my mom cooks, the food is great.
If you mix red and white, you get pink.
If you mix red and white, you get pink.
If the phone rings, don't answer it.
If the phone rings, don't answer it.
Plants die if they don't get enough sunlight.
Plants die if they don't get enough sunlight.
If you travel by bus, it takes much longer.
If you travel by bus, it takes much longer.
If a substance is denser than water, it sinks.
If a substance is denser than water, it sinks.
Whenever the economy slows down, unemployment rises.
Whenever the economy slows down, unemployment rises.
If you exercise regularly, your heart rate decreases.
If you exercise regularly, your heart rate decreases.
If the software crashes, the unsaved data is lost.
If the software crashes, the unsaved data is lost.
If the temperature drops below zero, the pipes are at risk of bursting.
If the temperature drops below zero, the pipes are at risk of bursting.
If one lacks discipline, success remains elusive.
If one lacks discipline, success remains elusive.
If the court finds the defendant guilty, a sentence is passed immediately.
If the court finds the defendant guilty, a sentence is passed immediately.
If a language is not spoken, it eventually becomes extinct.
If a language is not spoken, it eventually becomes extinct.
If the fundamental laws of physics are constant, then entropy invariably increases.
If the fundamental laws of physics are constant, then entropy invariably increases.
If a society neglects its youth, it sows the seeds of its own destruction.
If a society neglects its youth, it sows the seeds of its own destruction.
If the narrative lacks a coherent structure, the reader's engagement diminishes.
If the narrative lacks a coherent structure, the reader's engagement diminishes.
If an organism fails to adapt to its environment, it faces inevitable extinction.
If an organism fails to adapt to its environment, it faces inevitable extinction.
بهراحتی اشتباه گرفته میشود
Learners use 'will' in the zero conditional because they think the result is in the future.
Learners aren't sure which one to use in zero conditionals.
Learners try to use 'you should' or 'you must' instead of a simple imperative in instructions.
اشتباهات رایج
If you heat ice, it will melt.
If you heat ice, it melts.
If it rain, the grass gets wet.
If it rains, the grass gets wet.
If I am hungry I eat.
If I am hungry, I eat.
If you not eat, you die.
If you don't eat, you die.
When it will rain, I stay home.
When it rains, I stay home.
If I wake up late, I'm missing the bus.
If I wake up late, I miss the bus.
If you mix oil and water, they are separating.
If you mix oil and water, they separate.
If you would heat ice, it melts.
If you heat ice, it melts.
If the alarm rings, you will leave.
If the alarm rings, leave.
If you don't have a ticket, you aren't entering.
If you don't have a ticket, you don't enter.
If the data will be corrupted, the system fails.
If the data is corrupted, the system fails.
الگوهای جملهسازی
If you ___, you ___.
When it ___, I ___.
If the ___ ___, the ___ ___.
___ ___ if ___ ___.
Real World Usage
If the sauce thickens too much, add a splash of water.
If the screen stays black, hold the power button for ten seconds.
If you drop the weights, you lose your membership.
If the catalyst is added, the reaction rate doubles.
If you don't clean your room, you don't get dessert.
If you work on a holiday, you get double pay.
جایگزینی با 'When'
Zero Conditional هست یا نه، یه امتحان کوچولو کن: if رو با when عوض کن. اگه معنی جمله هیچ تغییری نکرد، قطعاً Zero Conditionalـه! If it works, it works.
از 'Will' استفاده نکن
will استفاده نکن. اینجوری انگار داری آینده رو پیشبینی میکنی، نه اینکه یه قانون طبیعت رو بگی. If you heat water, it boils.(نه
it will boil)اصطلاحات فضای مجازی
Zero Conditional دارن. مثلاً: If you know, you know.یا
If it works, it works.
Smart Tips
Check that both verbs are in the Present Simple. Do not use 'will'.
Try swapping them. If the meaning stays the same, you are looking at a Zero Conditional.
Use the imperative in the second clause for a clearer, more professional tone.
Look for the 'If'. If it's at the start, put a comma in the middle. If it's in the middle, remove all commas.
تلفظ
The 'If' Clause Lift
In the first part of the sentence (the condition), your voice usually goes up in pitch at the end of the clause to show the sentence isn't finished.
The Result Clause Fall
The second part of the sentence (the result) ends with a falling intonation to signal the end of the statement.
Rising-Falling
If it rains [rising], the grass gets wet [falling].
Standard declarative conditional statement.
حفظ کنید
روش یادسپاری
FACTS: Frequently Always Constant True Situations. If it's a FACT, use the Zero Conditional.
تداعی تصویری
Imagine a light switch. If you flip the switch (Condition), the light turns on (Result). It happens every single time, without fail. This is the Zero Conditional.
Rhyme
If the fact is always true, Present Simple is for you!
Story
A scientist in a lab always follows rules. If he mixes A and B, it explodes. If he leaves the door open, the mice escape. His life is a series of Zero Conditionals because everything is a predictable result of an action.
شبکه واژگان
چالش
Look around your room. Find three things that always happen. (e.g., 'If I press this button, the TV turns on.') Write them down using the Zero Conditional.
نکات فرهنگی
British speakers frequently use the zero conditional to talk about the weather and social etiquette. 'If it's sunny, everyone goes to the park.'
In academic and scientific writing, the zero conditional is the standard for defining laws and repeatable results.
Americans often use the zero conditional for 'tough love' advice or stating blunt facts of life.
The word 'if' comes from the Old English 'gif', which has Germanic roots. The structure of using present tenses for universal truths has been a stable feature of English for centuries.
شروعکنندههای مکالمه
What happens if you don't drink water for a whole day?
If you have a free weekend, what do you usually do?
How does your body react if you are very stressed?
In your country, what happens if someone breaks a minor law?
موضوعات نگارش
اشتباهات رایج
Test Yourself
If you _____ (freeze) water, it becomes solid ice.
Zero Conditional از Present Simple استفاده میکنیم.Choose the factual statement:
Zero Conditional استفاده میکنه.Find and fix the mistake:
If you clicks 'Like', the creator sees it.
you فعل click رو بدون s میگیره.Score: /3
تمرینهای عملی
8 exercisesIf you ___ (mix) hydrogen and oxygen, you ___ (get) water.
Select the correct sentence:
Find and fix the mistake:
If she don't study, she fails her exams.
If you freeze water, it becomes ice.
You can use 'when' instead of 'if' in the Zero Conditional without changing the meaning.
A: Why is the grass so dry? B: Well, if it ___ (not rain), the grass ___ (die).
Identify the incorrect usage:
1. If you touch fire... 2. If you don't sleep... 3. If you add sugar...
Score: /8
Practice Bank
10 exercisesWhen the sun goes down, it _____ dark.
Translate: 'If you don't sleep, you feel tired.'
Reorder: [if] [rain] [it] [gets] [the] [wet] [ground]
Which instruction is correct?
If you heats ice, it melts.
Match the condition to the result.
If you _____ (press) this button, the volume increases.
Reorder: [melts] [if] [it] [gets] [hot] [butter]
Translate: 'If the battery is low, it flashes red.'
Which is a rule?
Score: /10
سوالات متداول (8)
No. If you use `will`, it becomes a First Conditional, which is for specific future events, not general truths.
They are mostly interchangeable. `When` suggests the condition happens more frequently or certainly than `if`.
Only if the `if` clause comes first. If the result clause is first, no comma is used.
Yes, but you must use the Past Simple in both clauses. 'If it rained, we played inside.' This is called the Past Real Conditional.
It is neutral. It is used in both very formal scientific papers and very informal daily speech.
Yes! This is very common for instructions. 'If you are tired, go to bed.'
Because there is 'zero' doubt about the result. It is a 100% certainty.
Yes. `Unless` means `if not`. 'Plants die unless they get water.'
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
Si + presente + presente
Spanish speakers rarely make the mistake of adding 'will' (hará) in this context.
Si + présent + présent
French speakers might use 'quand' (when) more frequently than 'si'.
Wenn + Präsens + Präsens
The verb moves to the end of the 'wenn' clause in German, unlike English.
Verb-ru + to (~と)
Japanese has several conditional forms (~ba, ~tara), but 'to' is the closest to the Zero Conditional.
Idha (إذا) + Present
Arabic can also use the past tense after 'Idha' to express a condition, which confuses learners.
Ruguo (如果) ... jiu (就) ...
The lack of tense markers in Chinese makes the 'Present Simple' concept abstract for learners.
Learning Path
Prerequisites
Learn These First
ویدیوهای مرتبط
05:57 Carrot Apple Pancakes | Food Wishes
06:04 Chicken Cordon Bleu Casserole | Food Wishes
04:40 Androidify app deep dive
Verb Mood: Indicative, Imperative, and Subjunctive | Properties of Verbs
The Learning Depot
Verb Moods: Indicative, Imperative & Subjunctive | Verb Properties
Know Your English Grammar
Verb Moods in Grammar: Indicative, Imperative & Subjunctive #subjunctive #indicative #imperative
English with Teacher Aparna
Related Grammar Rules
شرطی اول: Unless = If Not
تا به حال سعی کردهاید به دوستی توضیح دهید که حتماً به مهمانی خانهاش میآیید، اما فقط در صورتی که رئیستان مجبورتان نکند...
حالت صفر: عادات و روتینها
Overview تا به حال متوجه شدهاید که چگونه گوشی شما به محض غروب خورشید به طور خودکار به حالت Dark Mode تغییر میکند؟ یا چ...
Can: ابراز توانایی (Can)
Overview میتونی پشتک بزنی؟ یا شاید فقط بلدی یه نون خمیرترشِ درستوحسابی بپزی؟ در هر صورت، داری از `can` استفاده میکنی...
شرطیهای ترکیبی: عمل گذشته، نتیجه حال (Type 2)
### Overview شرایطهای مختلط (Mixed Conditionals) یکی از ساختارهای پیشرفته و در عین حال بسیار کاربردی در زبان انگلیسی هس...
Suppose & Supposing: بازی 'چه می شد اگر'
### مقدمه در گرامر زبان انگلیسی، عبارات `suppose` و `supposing` نقش ویژهای در بیان جملات شرطی و تشویق مخاطب به تفکر در...
