1. What is the First Conditional?
1. What is the First Conditional?
We use the First Conditional to talk about real and possible situations in the future and their likely results.
"If it rains tomorrow, I will stay at home."
👉 Interpretation: It is possible that it will rain tomorrow. If that condition happens, staying home is the definite result.
Zero Conditional
Universal facts & laws of science (e.g., If you heat ice, it melts.)
First Conditional
Specific future plans and likely possibilities (e.g., If I study, I will pass.)
2. Sentence Formula & Structure
A conditional sentence consists of two building blocks: the If-Clause (Condition) and the Main Clause (Result).
| Clause Order | Grammar Pattern | Example Sentence |
|---|---|---|
| If-Clause First | If + Present Simple , will + Base Verb | If you study hard, you will pass the exam. |
| Main Clause First | will + Base Verb if + Present Simple | You will pass the exam if you study hard. |
⚠️ Important Punctuation Rule:
If the sentence starts with "If", you MUST place a comma ( , ) between the two clauses!
If the main clause comes first, NO comma is needed.
3. Advanced Variations
As you advance into Junior Secondary, you can replace will with other modal verbs, imperatives, or unless.
Modal Verbs
Use can / may / must / should instead of will to show permission or obligation.
Imperatives
Use command verbs in the main clause to give direct advice or orders.
Using "Unless"
Unless means "If... not" in negative conditions.
4. Top 2 Common Mistakes to Avoid 🛑
Putting "WILL" directly inside the IF-clause
Never place the auxiliary verb will inside the condition clause next to if!
Forgetting Subject-Verb Agreement (-s/-es)
Because the If clause uses Present Simple, remember third-person singular subjects (he, she, it, singular nouns) require -s / -es!
5. Quick Rule Summary
Golden Rule Formula
Example: If she calls, I will answer.
Classroom Checklist
- Comma used if sentence starts with "If"?
- No "will" inside the "if" clause?
- Subject-verb -s checked for he/she/it?