disappoint是动词原形，disappoint 为动词，意思是让……失望、令……失望英英释义：fail to meet the hopes or expectations ofto make sb feel sad because sth that they hope for or expect to happen doesn't happen.例句：disappointed一方面是过去式可以当动词使用，一方面是过去分词可以当形容词使用。disappointed 为形容词时，失望的，沮丧的，失意的。英英释义：disappointingly unsuccessful例句:disappointment为名词，失望
