1. Conditional (if …) If + V(Vs) /Pres.Simple will + V If it snows,
Conditional Clause
I - события возможны в
Main Clause
настоящем или будущем
If + V(Vs) /Pres.Simple
will + V
If it snows,
If I learn the words well,
they will go skiing
I’ll get a good mark
II - события маловероятны в
If + V2 (Ved) /Past Simple
would (might) + V
If he had a lot of money,
If I were a rich man,
he /I would travel all around the world
III - нереальное условие,
относится к прошедшему времени
If + had V3 / Past Perfect
would (could) have + V3
If you had helped him,
he wouldn’t have got a bad mark in Maths.

2. The Conditional Sentences can be combined:
прошедшее
if + had V3
настоящее / будущее
would + V
If our football team had won the last match,
-they would (could) try their chance in South Africa.
-they would go to the world football championship.
If you hadn’t already seen this film,
we could (would) go to the cinema together.
настоящее (нереальное)
if + V 2 / V ed
would have + V3
If he weren’t so lazy,
he would have written the test successfully.
If I were you,
I would have answered this letter.