Conditional Sentences are also known as Conditional
Clauses or If Clauses. They are used to express that the action in the main
clause (without if) can only take place if a certain condition (in the clause
with if) is fulfilled. There are three types of Conditional Sentences.
Conditional Sentence Type 1
→ It is possible and also very likely that the
condition will be fulfilled.
Form: if + Simple Present, will-Future
Example: If I find her address, I’ll send her an
invitation.
Conditional Sentence Type 2
→ It is possible but very unlikely, that the
condition will be fulfilled.
Form: if + Simple Past, Conditional I (= would +
Infinitive)
Example: If I found her address, I would send her an
invitation.
Conditional Sentence Type 3
→ It is impossible that the condition will be
fulfilled because it refers to the past.
Form: if + Past Perfect, Conditional II (= would +
have + Past Participle)
Example: If I had found her address, I would have
sent her an invitation.
