"Would"

When the action expressed by the notional verb refers to the past "would" is used instead of "will".

"Would" is used to express:

1. Absence of wish to do smth. or resistance (отсутствие желания - о Людях, сопротивление - о вещах) - in negative sentences.

I tried to persuade him but he wouldn't listen.

We waited till afternoon but the rain wouldn't stop.

The motor wouldn't start.

2. A polite request (a greater degree of politeness) - in questions. Would you please pass me the salt? [

Would you be so kind as to open the door?

"Would" is used in the Subjunctive Mood here.

3. A repeated past action.

He would call on us in the evening.

4. A future action in object clauses after "wish" if the subjects of the two clauses are different. "Would" is the Subjunctive Mood here.

I wish you would do it yourself. I wish he would stop smoking.