一、pleasant 主要有两方面用法：一是用来说明事物,表示“令人愉快的”或“舒适的”等;二是用来说明人,表示“友好的”、“讨人喜欢的”等.如：
The weather was cold,but the trip was pleasant.虽然天气很冷,但旅途还是很愉快.
It was a pleasant surprise to see her again.再次见到她真是又惊又喜.
二、pleasing 的用法与 pleasant 比较接近,有时可换用.如：
It's pleasant [pleasing] to the ear.这很悦耳.
She is not very beautiful but very pleasant [pleasing].她不很漂亮,但很讨人喜欢.
