Conditional
Sentences
And other expressions of conditions
SENTENCE GRAMMAR
Zalika Putri Intan Palupi
Overview
Zero or Real First Second Third Mixed
imaginary or
possible or
generally less likely to imaginary or
likely to
Condition true happen impossible imaginary or
happen
IF CLAUSE IF + present (unreal) IF + past impossible
IF + present
simple, IF + past perfect,
simple,
simple,
present or
Result would have +
present future simple future present or
MAIN past
simple will + infinitive would + past
CLAUSE participle
infinitive
Zero Conditional
if/when + present + present/imperative
We use the Zero or Real Conditional to talk about
things that are generally true in the present or in
the past and in the future. (timetable)
If I eat too much chocolate, I feel sick.
If you see a spider, run!
It gets cold here when the sun goes down.
IIf the wind blows, the trees move.
The terms "present" and "past" are used instead of "present tense (simple or continuous)" and "past tense (simple or
continuous"), for the sake of simplicity.
First Conditional if + present + future simple/ modal
verbs with future meaning
We use the First Conditional to talk about future
situations we think are likely or probable to
happen. This conditional is more specific. (will, can,
could, may, might, going to).
If it rains tomorrow, we won't go camping.
I can't go out if I don't finish my homework.
If you pay attention, you may see a shooting star.
They might arrive on time if there isn't much traffic.
Other expressions unless/as long as/so long as/provided
(that)/providing (that)/on condition that
We can use other expressions if we want to set
specific conditions or limits on a situation.
You become dehydrated unless you drink enough water (= if
you don't drink enough water).
I feel safe as long as you are with me.
You can go out providing (that) you've tidied your room.
My parents will let me go to the party on condition that I pass
all my exams.
Second Conditional if+ past simple + modal verb with
future-in-the-past meaning
We use the Second Conditional to talk about
present or future situations we think are
impossible or unlikely to happen. This is imaginary/
unreal/ hypothetical condition and result. (unreal)
I might work harder if they paid me better.
If you really wanted to help, you would be trying harder.
If you studied harder, you could do better at school.
If I were* you, I'd tell my parents the truth.
*We use "were" with all subject pronouns in the Second Conditional (Subjunctive mood).
Notes
"If I was" or "If I were"?
If I/he/she/it were is used when we refer to a hypothetical situation.
This is a second conditional sentence, in which the verb in the
conditional clause is in the subjunctive mood.
If I were you, I'd be more careful.
If I/he/she/it was is used when we refer to a real situation. This is a
real or zero conditional sentence, in which the verb in the conditional
clause is in the indicative mood.
If I was rude, please forgive me.
Third Conditional if + past perfect + future-in-the-past
modal verbs + have + past participle
if + past perfect (had + past participle), would
have + past participle
We use the Third Conditional to imagine a
different past, in which something did or didn't
happen, and we also imagine a different result.
You wouldn't have cut your head if you had been wearing a
safety helmet.
If I hadn't lost my job, I could have been promoted.
If she had seen anything, she would have told the police.
Notes
The use of the comma
When the if clause comes before the main clause,
it is followed by a comma.
If you don't hurry, you'll miss the plane!
When the if clause comes after the main clause,
there is no comma between the clauses.
You'll miss the plane if you don't hurry!
Happy
learning!