Has gone / had gone

HAS = (have的第三人稱單數現在式)
HE , SHE, IT 是用HAS


HAD = (have的過去式和過去分詞)
I, WE, YOU, THEY 是用 HAD

has
vbl.
have 的第三人稱單數現在式(he,she,it)


had
vbl.
have的過去式和過去分詞
conj.
有

Has 係 現在式 ,HAVE 的第三人稱單數
Had 係 have的過去式和過去分詞

2007-12-04 12:32:42 補充：
HE , SHE, IT 用HASI, WE, YOU, THEY 用 HAD

2007-12-04 12:40:15 補充：
HAS 又有擁用,取,接收的意思.