Zero Conditional – Grammar Chart

Educational chart explaining the zero conditional in English: structure, usage, and examples for general truths and scientific facts.

🟦What Is the Zero Conditional?

We use the zero conditional to talk about general truths, scientific facts, or results that always happen when a condition is met.

✅ If the milk smells bad, I don’t drink it.
✅ If water reaches 100°C, it boils.
✅ If people are talking all the time, I can’t concentrate.

🔁 Structure: If + present simple, ... present simple
💡 You can often replace if with when without changing the meaning:
“When the weather is bad, people don’t go shopping.”

🟩Clause Order & Punctuation

If the main clause comes first, no comma is used:

✅ I never go to bed late if I have to get up early.

First Conditional – Grammar Chart

Educational chart explaining the first conditional in English: structure, usage for real future possibilities, and common mistakes.

🟦What Is the First Conditional?

We use the first conditional to talk about real or possible future situations and their likely results.

✅ If you study, you’ll pass.
✅ If he doesn’t call you, tell me immediately.
✅ If you help me, I’ll have finished by the end of the month.

🔁 Structure: If + present simple, ... will + base verb
❌ Never use “will” in the if-clause:
❌ “I’ll help you if you will need me.” → ✅ “...if you need me.”

🟪Unless & In Case

Unless = if … not

✅ I won’t go on holiday unless I save money.
(= ...if I don’t save money)

In case expresses precaution (not condition):

✅ I’ll take my umbrella in case it rains.
(= I’ll take it whether it rains or not)
❌ NOT the same as: “I’ll take it if it rains.” (only if it rains)

Zero vs First Conditional

Zero Conditional

For general truths or habits.

“If you don’t use oil, it tastes awful.”
(= Every time — general rule)

First Conditional

For specific future possibilities.

“If you don’t use oil, it will taste awful.”
(= This one time — prediction)

Future Time Clauses – Grammar Chart

🟨Future Time Clauses

After time words like when, as soon as, until, once, before, after, while, we use a present tense (NOT “will”) to talk about the future.

✅ I’ll go to bed as soon as I finish my homework.
✅ When I am 65, I will retire.
✅ I won’t leave until you arrive.

🔁 Comma rule: Use a comma if the time clause comes first:
“When I am 65, I will retire.” ✅
“I will retire when I am 65.” ✅ (no comma)

🟩Present Perfect in Time Clauses

Use present perfect to emphasize that an action will be completed before the main event.

✅ I’ll go to bed as soon as I have finished my homework.
✅ I won’t leave until you have arrived.

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