First Conditional Exercises With Answers

first conditional exercises with answers build speed: use present simple after if, then will + base verb for the result.

You want practice that stays simple and stays accurate. The first conditional is the go-to pattern for real conditions and likely outcomes. You’ll see it in plans, offers, warnings, and everyday rules.

This page gives you the form, a tight set of rules learners miss, then exercise sets with a full answers list at the end. Start with the table, then move into the drills.

What The First Conditional Does

It links a real condition with a likely result. You’re not talking about dreams or fantasy. You’re talking about what will happen if something happens.

In grammar terms, the if-clause uses present simple. The result clause often uses will + base verb.

First Conditional Exercises With Answers For Fast Practice

Use this chart as a quick reference while you practice. It lists common meanings plus the matching verb forms, so you can check your work at a glance.

Meaning	If-Clause	Result Clause
Plans	present simple	will + base verb
Warnings	present simple	will + base verb
Offers	present simple	will + base verb
Promises	present simple	will + base verb
Rules	present simple	will + base verb
Advice	present simple	can / should / must + base verb
Negative results	present simple (negative OK)	won’t + base verb
Polite requests	present simple	will you + base verb
Choice	present simple	can + base verb

Rules That Keep Your Sentences Clean

The form is short, yet a few small choices change meaning fast. Use this checklist each time you write an if sentence.

Use present simple after if. Write If I miss the bus, not If I will miss the bus.
Use will + base verb for the result. Write … I’ll be late, not … I’m late when you mean a later outcome.
Keep the clauses flexible. You can start with the if-clause or start with the result clause.
Watch commas. Use a comma when the if-clause comes first.
Don’t confuse first and zero conditional. Zero is for things that always happen. First is for a real condition that may happen.

If you want a quick refresher from a trusted teaching body, the British Council lesson on conditionals: zero, first and second lays out the patterns with short checks. For deeper grammar notes on if-clauses, Cambridge’s Conditionals: if page is a solid reference.

When “Will” Can Show Up After If

Most of the time, you skip will in the if-clause. Still, English speakers sometimes use will after if to show willingness, insistence, or a polite request. Think of it as attitude, not time.

Comma And Word Order In Real Sentences

Both word orders are correct. Pick the one that sounds natural in your sentence.

If-clause first: If it rains, we’ll stay home.
Result clause first: We’ll stay home if it rains.

Notice the comma: it appears only when the if-clause comes first.

Exercises

If you came for one clean drill set, you’re in the right place. Below are first conditional exercises with answers, grouped by skill, then the full answers list near the end.

Do them once, then redo only your misses tomorrow; the repeat gives you steadier tense choice and cleaner commas.

Exercise 1: Choose The Correct Verb Form

Pick the best option to complete each sentence.

If I see / will see Lara tonight, I’ll tell her the news.
If you don’t hurry / won’t hurry, you’ll miss the train.
We’ll order pizza if they are / will be hungry.
If he studies / will study more, he’ll pass the test.
If the shop closes / will close early, we’ll go tomorrow.
If you finish / will finish first, you’ll help me, right?
She’ll call you if she needs / will need a ride.
If it snows / will snow, the match won’t start.
If I don’t sleep / won’t sleep, I’ll feel awful.
They’ll be late if the meeting runs / will run long.

Exercise 2: Fill The Gaps

Complete each sentence with the correct verb form. Use the verb in brackets.

If you __________ (call) me after class, I __________ (meet) you outside.
If she __________ (not eat) breakfast, she __________ (get) hungry by noon.
We __________ (not go) out if it __________ (rain) tonight.
If they __________ (arrive) early, they __________ (help) set up the room.
If he __________ (miss) the deadline, the teacher __________ (not accept) the work.
If I __________ (find) your keys, I __________ (text) you right away.
If you __________ (be) tired, you __________ (can) rest for ten minutes.
If the bus __________ (not come) soon, we __________ (take) a taxi.
If my laptop __________ (crash), I __________ (lose) the file.
If you __________ (not study), you __________ (not pass) this unit.
If she __________ (finish) the report today, her boss __________ (be) pleased.
If the price __________ (go) up again, we __________ (buy) it later.

Exercise 3: Put The Words In Order

Make a correct first conditional sentence from each set of words. Add a comma only when it’s needed.

if / I / see / him / I’ll / say / hello
we’ll / stay / at home / if / it / gets / late
if / you / don’t / charge / it / the phone / will / die
she’ll / feel / better / if / she / drinks / water
if / they / are / busy / we / won’t / disturb / them
you / can / borrow / my notes / if / you / return / them / tomorrow

Exercise 4: Rewrite With The Other Word Order

Rewrite each sentence so the other clause comes first. Keep the meaning the same.

If I get home early, I’ll cook dinner.
We’ll cancel the trip if the weather gets worse.
If you don’t ask, you won’t get a clear answer.
She’ll save money if she stops buying snacks every day.
If the teacher explains it again, I’ll understand.
They’ll call you if they need your help.

Exercise 5: Fix The Mistake

Each line has one error. Rewrite the sentence correctly.

If it will rain, we will stay inside.
If you’ll come early, we can start on time.
I will tell you if I will see her.
If he don’t study, he’ll fail.
If you work hard you will get the job.
We’ll be late, if we miss the bus.
If she doesn’t calls, I’ll worry.
If they are late, the film starts without them.
If you won’t listen, you won’t learn.
If I find it, I texting you.

Exercise 6: Mini Dialogues

Fill in the blanks to complete each dialogue. Use first conditional forms that sound natural.

A: If you __________ (finish) now, __________ you __________ (help) me carry these?

B: Sure. I’ll help.
A: What will you do if the train __________ (be) full?

B: I __________ (wait) for the next one.
A: If I __________ (not get) a reply today, I __________ (send) another message.

B: Good plan.
A: If you __________ (feel) sick tomorrow, __________ you __________ (stay) home?

B: Yes, I’ll stay home and rest.
A: If the teacher __________ (ask) you, what __________ you __________ (say)?

B: I’ll tell the truth.
A: If we __________ (leave) at six, we __________ (arrive) before eight.

B: Let’s do it.

Common Errors And Fast Fixes

Before you check the answers, scan this table. It maps the error type to a quick fix and a short drill you can repeat.

Error Type	Quick Fix	Micro Drill
Using will in the if-clause	Use present simple after if	Rewrite 5 lines: “If I will …” → “If I …”
Missing -s with he/she/it	Add -s in present simple	Make 10 lines with “If he …, he’ll …”
Comma in the wrong spot	Comma only when if-clause is first	Rewrite 6 lines, swap clause order
Mixing zero conditional meaning	Use first for one real condition	Change “always” rules into “tomorrow” plans
Using present in the result by habit	Use will for the likely outcome	Underline result verbs, add will where needed
Wrong negative form	Use don’t/doesn’t in the if-clause	Write 8 negatives: If I don’t …, I won’t …
Using -ing after will	Will + base verb	Fix 10 lines: “will going” → “will go”
Overusing will after if for tone	Use will after if only for willingness	Mark tone: condition or willingness?

Answers List

Check your work, then rewrite the ones you missed once. That single rewrite step does a lot for accuracy.

Exercise 1 Answers

see
don’t hurry
are
studies
closes
finish
needs
snows
don’t sleep
runs

Exercise 2 Answers

call / will meet
doesn’t eat / will get
won’t go / rains
arrive / will help
misses / won’t accept
find / will text
are / can
doesn’t come / will take
crashes / will lose
don’t study / won’t pass
finishes / will be
goes / will buy

Exercise 3 Answers

If I see him, I’ll say hello.
We’ll stay at home if it gets late.
If you don’t charge it, the phone will die.
She’ll feel better if she drinks water.
If they are busy, we won’t disturb them.
You can borrow my notes if you return them tomorrow.

Exercise 4 Answers

I’ll cook dinner if I get home early.
If the weather gets worse, we’ll cancel the trip.
You won’t get a clear answer if you don’t ask.
If she stops buying snacks every day, she’ll save money.
I’ll understand if the teacher explains it again.
If they need your help, they’ll call you.

Exercise 5 Answers

If it rains, we will stay inside.
If you come early, we can start on time.
I will tell you if I see her.
If he doesn’t study, he’ll fail.
If you work hard, you will get the job.
We’ll be late if we miss the bus.
If she doesn’t call, I’ll worry.
If they are late, the film will start without them.
If you don’t listen, you won’t learn.
If I find it, I’ll text you.

Exercise 6 Answers

finish / will / help
is / will wait
don’t get / will send
feel / will / stay
asks / will / say
leave / will arrive

One Page Self Check Card

Use this mini card when you write your own lines.

If-clause: present simple (I go, she goes, they don’t go).
Result clause: will + base verb (I’ll go, she’ll go, they won’t go).
Comma: only when the if-clause comes first.
Order: both orders work; pick the one that fits your sentence.
After you check answers, rewrite the missed ones once and read them aloud.