Would除了是will的过去式，还有哪些意思？

will还表示一种愿望，你可以说my will

would 和could还有共同的意思是，都具有委婉，礼貌的意思，表示对人的尊敬。如：Would you mind telling me something？Could you tell me the way to Guangzhou？等都是表示礼貌

将
They said they would meet us tomorrow morning.
他们说明天早晨与我们会面。
(表示习惯、行为、习俗)老是, 总是
When-ever he had time, he would do some reading.
他一有时间, 就会读点书。
(表示设想、推测、可能性)也许, 大概
She would be about 60 when she died.
她死时也许60岁。
(表示婉转的请求)请
Would you kindly show me the way to the station?
你可以指点我去车站的路吗?
(表示意愿)愿
Would that I were young again.
我若能返老还童该多好。

would 可以和like搭档 would like= want,例如：I would like some noodles. 可以简写为I'd like some noodles.

could一般是服务员说的，表示对顾客的尊敬，例如：Can I help you. 比较尊敬的说法就是Could I help you.