This document discusses the conditional tense in English grammar. The conditional tense, formed with "would" plus the base verb, is used to describe hypothetical or imaginary situations that may occur in the past, present or future. It provides the example "If I saw an accident, I would call an ambulance" to illustrate using the conditional tense to talk about a possible past reaction. It also gives the example "If Tom had more money, he would buy a fast car" to demonstrate the conditional tense referring to an imaginary past situation.

1. Conditional Tense
(example : to call)
Affirmative Negative
Long Form Contracted Form
I would call I would not call I wouldn't call
You would call You would not call You wouldn't call
He/she/it would call He would not call He wouldn't call
We would call We would not call We wouldn't call
You would call You would not call You wouldn't call
They would call They would not call They wouldn't call
1)The conditional:would + verb , is used to refer to an imaginary or
hypothetical situation,
with an 'if' clause in the past.
Ex : ◊ If I saw an accident, I would call an ambulance.
I would call an ambulance an accident.
It is possible that you will never see an accident, but here you are
describing
your probable reaction in such circumstances.
Tom is not rich but he likes fast car.
◊If Tom had more money, he would buy a fast car.