Modal verbs

Hypothetical possibility: would

Would is used to speculate and hypothesize about an unreal or improbable present or future situation.

• I would buy a new car, but I don't have any money.
• I wouldn't go on a trip to the moon; it's too dangerous.
• Tell me, what would you do?

In positive sentences would is often contracted to 'd in spoken English.

• I'd come with you, but I'm busy.
• She'd do it for you, you know.