By the end of this lesson, I can…
- Comparing the Zero, First, and Second Conditionals · 1
- Comparing the Zero, First, and Second Conditionals · 2
- Second Conditional: Hypothetical Situations in English · 3
- Second Conditional: Hypothetical Situations in English · 4
- Second Conditional: Hypothetical Situations in English · 5
- Comparing the Zero, First, and Second Conditionals · 6
Simple explanation
Retrieve related patterns together. Practice and test use separate questions; return to the source lesson when a point is unclear.
Comparing the Zero, First, and Second Conditionals · 1
Whenever ice gets warm enough, it melts. Use the zero conditional for general truths, rules, habits, and regular cause-and-result relationships. The basic structure is if + present simple, present simple.
Comparing the Zero, First, and Second Conditionals · 2
If it rains tomorrow, we'll cancel. Use the first conditional for a real or realistic future possibility. The basic structure is if + present simple, will + base verb. Although the condition refers to the future, the basic if-clause normally uses the present simple rather than will.
Second Conditional: Hypothetical Situations in English · 3
Imagine I had no money problems: if I had a million pounds, I'd travel. For the basic second conditional, use if + subject + past simple to introduce the hypothetical condition.
Second Conditional: Hypothetical Situations in English · 4
If I won, I would buy a house. The main clause normally uses would followed by the base form of the verb: would go, would buy, would study.
Second Conditional: Hypothetical Situations in English · 5
If I were you, I'd ask for help. In hypothetical situations, were can be used with I, he, she, and it. This is especially important in the fixed and very common expression “If I were you.” “If I was” can occur in informal speech, but “If I were you” is the standard form to learn for giving advice.
Comparing the Zero, First, and Second Conditionals · 6
If I owned an island, I would build a school there. a hypothetical or remote present/future condition Do not identify a conditional only by looking at one verb. First decide whether the speaker is expressing a general result, a realistic future possibility, or a hypothetical situation.
Usage reference table
| Pattern or function | Target-language model |
|---|---|
| Comparing the Zero, First, and Second Conditionals · 1 | If you mix blue and yellow, you get green. |
| Comparing the Zero, First, and Second Conditionals · 2 | If I drink coffee late at night, I can't sleep. |
| Second Conditional: Hypothetical Situations in English · 3 | I would buy that laptop if it were cheaper. |
| Second Conditional: Hypothetical Situations in English · 4 | If I were you, I would apply for the job. |
| Second Conditional: Hypothetical Situations in English · 5 | If we didn't have to work tomorrow, we would go out tonight. |
| Comparing the Zero, First, and Second Conditionals · 6 | If I finish this report tonight, I'll send it to you. |
Grammar formula
Zero conditional
If + Present Simple, Present SimpleIf you heat ice, it melts.
First conditional
If + Present Simple, will + base verbIf it rains tomorrow, we'll stay home.
Negative condition
If + subject + didn't + base verb, subject + would + base verbIf I didn't have work tomorrow, I would stay up late.
Hypothetical question
Wh-word + would + subject + base verb + if + subject + past simple?What would you do if you lost your phone?
Advice
If I were you, I would/wouldn't + base verbIf I were you, I would talk to the manager.
Negative second conditional
If + subject + didn't + base verb, subject + wouldn't + base verbIf I didn't live so far away, I would visit more often.
Core rules
- 1
Comparing the Zero, First, and Second Conditionals · 1
Whenever ice gets warm enough, it melts. Use the zero conditional for general truths, rules, habits, and regular cause-and-result relationships. The basic structure is if + present simple, present simple.
- 2
Comparing the Zero, First, and Second Conditionals · 2
If it rains tomorrow, we'll cancel. Use the first conditional for a real or realistic future possibility. The basic structure is if + present simple, will + base verb. Although the condition refers to the future, the basic if-clause normally uses the present simple rather than will.
- 3
Second Conditional: Hypothetical Situations in English · 3
Imagine I had no money problems: if I had a million pounds, I'd travel. For the basic second conditional, use if + subject + past simple to introduce the hypothetical condition.
- 4
Second Conditional: Hypothetical Situations in English · 4
If I won, I would buy a house. The main clause normally uses would followed by the base form of the verb: would go, would buy, would study.
- 5
Second Conditional: Hypothetical Situations in English · 5
If I were you, I'd ask for help. In hypothetical situations, were can be used with I, he, she, and it. This is especially important in the fixed and very common expression “If I were you.” “If I was” can occur in informal speech, but “If I were you” is the standard form to learn for giving advice.
- 6
Comparing the Zero, First, and Second Conditionals · 6
If I owned an island, I would build a school there. a hypothetical or remote present/future condition Do not identify a conditional only by looking at one verb. First decide whether the speaker is expressing a general result, a realistic future possibility, or a hypothetical situation.
Useful examples
If you mix blue and yellow, you get green.
Mixing blue and yellow produces green.
This is the zero conditional because it describes a general result.
If I drink coffee late at night, I can't sleep.
Drinking coffee late usually makes it difficult for me to sleep.
The zero conditional can describe a regular personal result, not only scientific facts.
I would buy that laptop if it were cheaper.
I would purchase that laptop if its price were lower.
The result comes before the if-clause, so no comma is normally needed.
If I were you, I would apply for the job.
In your situation, I would send an application for that job.
“If I were you” introduces advice based on an imagined change of position.
If we didn't have to work tomorrow, we would go out tonight.
We would go somewhere tonight if working tomorrow were not necessary.
The hypothetical condition itself is negative.
If I finish this report tonight, I'll send it to you.
I will send you the report if I manage to complete it tonight.
Finishing the report is uncertain but realistically possible.
Common mistakes
- ❌ Whenever ice gets warm enough, it melt. ✅ Whenever ice gets warm enough, it melts.
- ❌ If it raining tomorrow, we'll cancel. ✅ If it rains tomorrow, we'll cancel.
- ❌ Imagine I had no money problems: if I have to a million pounds, I'd travel. ✅ Imagine I had no money problems: if I had a million pounds, I'd travel.
- ❌ If I won, I would to buy a house. ✅ If I won, I would buy a house.
- ❌ If I am you, I'd ask for help. ✅ If I were you, I'd ask for help.
- ❌ If I owned an island, I would build a school there. → a realistic future possibility ✅ If I owned an island, I would build a school there. → a hypothetical or remote present/future condition
Learning tips
- Ask yourself: Does this result always or usually happen under this condition? If yes, the zero conditional may be appropriate.
- Remember the basic pattern: if + present simple, present simple.
- Remember the basic pattern: if + present simple → will + base verb.
- Ask yourself whether the condition is a realistic future possibility. If it is, the First Conditional may be appropriate.
- Ask yourself whether the situation is unreal, imagined, or unlikely. If it is, the second conditional may be the right choice.
- Remember that the past simple in the if-clause usually expresses hypothetical distance, not past time.
Use it in your own text
Write six new sentences about your life, experiences or views. Use the rules and table and check why each form fits. The models are illustrations; you need not force every form into one text. This is self-assessment; the test score is recorded separately.
- Comparing the Zero, First, and Second Conditionals · 1
- Comparing the Zero, First, and Second Conditionals · 2
- Second Conditional: Hypothetical Situations in English · 3
- Second Conditional: Hypothetical Situations in English · 4
- Second Conditional: Hypothetical Situations in English · 5
- Comparing the Zero, First, and Second Conditionals · 6
Show the model
If you mix blue and yellow, you get green. If I drink coffee late at night, I can't sleep. I would buy that laptop if it were cheaper. If I were you, I would apply for the job. If we didn't have to work tomorrow, we would go out tonight. If I finish this report tonight, I'll send it to you.
Check your own work
- My intended meaning fits the chosen construction.
- I checked subject, verb form, case/preposition and word order.
- I adapted the models to my own context and considered the exceptions.
Put it into practice
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Related grammar
Frequently asked questions
What matters for “Comparing the Zero, First, and Second Conditionals · 1”?
Whenever ice gets warm enough, it melts. Use the zero conditional for general truths, rules, habits, and regular cause-and-result relationships. The basic structure is if + present simple, present simple.
What matters for “Comparing the Zero, First, and Second Conditionals · 2”?
If it rains tomorrow, we'll cancel. Use the first conditional for a real or realistic future possibility. The basic structure is if + present simple, will + base verb. Although the condition refers to the future, the basic if-clause normally uses the present simple rather than will.
What matters for “Second Conditional: Hypothetical Situations in English · 3”?
Imagine I had no money problems: if I had a million pounds, I'd travel. For the basic second conditional, use if + subject + past simple to introduce the hypothetical condition.
What matters for “Second Conditional: Hypothetical Situations in English · 4”?
If I won, I would buy a house. The main clause normally uses would followed by the base form of the verb: would go, would buy, would study.
What matters for “Second Conditional: Hypothetical Situations in English · 5”?
If I were you, I'd ask for help. In hypothetical situations, were can be used with I, he, she, and it. This is especially important in the fixed and very common expression “If I were you.” “If I was” can occur in informal speech, but “If I were you” is the standard form to learn for giving advice.
What matters for “Comparing the Zero, First, and Second Conditionals · 6”?
If I owned an island, I would build a school there. a hypothetical or remote present/future condition Do not identify a conditional only by looking at one verb. First decide whether the speaker is expressing a general result, a realistic future possibility, or a hypothetical situation.
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