pleasing是令人高兴/开心/愉快的,讨人喜欢的,有点主动的含义,与另外两个词不同.
pleasant和pleased都有“高兴的”意思.pleasant所形容的物或人常给人们带来愉快或欢乐.pleasant通常与news,day,weather,voice,view等名词连用.
pleased指对某人或某事感到高兴或满意,含有被动之意,其后常与with,about或动词不定式连用,有时也可接从句.