I have been struggling with the "would" for quite a long time. I know most of the basic ideas of would. But there are too many "extended usages" that always confuse me.
I found this article from EnglishClub which is very helpful for understanding "would."
But still, I can't figure out what could be the difference without using the "would."
For example (sentence after the '→' is what I thought was "the same" meaning):
would for desire or inclination
- I'd love to live here. → I love to live here.
- Would you like some coffee? → Do you like some coffee?
- What I'd really like is some tea. → What I really like is some tea.
would for opinion or hope
- I would imagine that they'll buy a new one. → I can imagine that they'll buy a new one.
- I suppose some people would call it torture. → I suppose some people can call it torture.
- I would have to agree. → I have to agree.
- I would expect him to come. → I expect him to come.
- Since you ask me I'd say the blue one is best. → Since you ask me I have to say the blue one is best.
would for presumption or expectation
- That would be Jo calling. I'll answer it. → That must/will be Jo calling.
- We saw a police helicopter overhead yesterday morning. | Really? They would have been looking for those bank robbers. → Really? They may have been looking for those bank robbers.
I just can't understand WHY it should be "would" rather than other word or without using "would". What is the difference there?
I really wish there is some sort of "core concept" that can help me to understand "would" once and for all.