天津市委老干部局:please,pleased,pleasure,pleasant

please 动词 Please have your sit !
pleased 形容词/PLEASE的过去分词以及过去式
I'M SO PLEASED TO MEET YOU . (高兴的)
pleasure 乐意,名词 IT'S MY PLEASURE TO SEND YOU HOME .
pleasant 快乐的,形容词 It really was an pleasant moment for me .
(可以跟PLEASED 替换,意思都一样)

please ;verb 动词， Please open the door for me.
pleased: adj.形容词，使人高兴/满意的。通常与人有关。
如：I'm pleased to meet you.
pleasure: noun 名词，高兴的事情。
如： It is a pleasure to see you again.
pleasant; adj. =pleasing 形容词，通常和物有关。
It is a pleasing/pleasant trip.

please 动词：请
pleased 形容词，可修饰人，也可修饰事物：乐意的，高兴的，愉悦的
pleasure 名词： 乐意、愉悦
pleasant 形容词，往往修饰事物名词：（令人）愉快的，美好的。

please:Please don't open the windows!
pleased:It is pleased for me to hear that.
pleasure:It's my pleasure!
pleasant:It's a pleasant day.

please: Please close the window for me.
pleased: I'm pleased to see you here.
pleasure: It's my pleasure to give you a lift.
pleasant: The weather is very pleasant today.