Modal: Would
Modal auxiliary for past contexts, polite expressions, hypotheticals, and preferences.
Would is often called the past of will, but that description barely scratches the surface. It is the modal of distance — distance in time, distance in politeness, and distance from reality. It transforms direct statements into softer, more considerate expressions, and it builds the bridge between what is real and what we only imagine.
In reported speech and past narration, would carries the future meaning of will back into the past (future-in-the-past): She said she would arrive by six. When describing past habits, it works like a gentler version of used to: Every summer we would spend two weeks at my grandparents' farm.
The real power of would lies in politeness. Compare Will you open the window? with Would you open the window? The second version gives the listener room to say no — it does not assume compliance. This is why would dominates polite requests, offers, and opinions: I would suggest waiting until tomorrow, Would you like some tea?
In second conditional sentences, would creates the hypothetical: If I had a million dollars, I would travel the world. Notice that the if-clause uses the past tense, but the meaning is about an unreal present or unlikely future — not the past. The same hypothetical force works without if: I would never say that to him means "under no circumstances".
Would also handles preferences with phrases like I would rather stay home and I would sooner quit than lie. The fixed expression would that — as in Would that I were younger — expresses a formal, almost literary wish, though it is rare in everyday speech. Where will pushes forward with confidence and could offers polite possibility, would stands between them: the modal of polite distance, imagined worlds, and careful consideration.
Examples
I thought he would be here by now.
Future-in-past
I would rather have a hamburger.
Preference