✔ 最佳答案
It is an old form of English not generally used today.
The first lyrics of the Christmas song, Joy to the world,
"Joy to the world, the Lord is come."
Is come is a declaration.
I am come = 我已經來了!
2012-10-08 14:26:29 補充:
This is called archaic grammatical construction. A form of the verb BE is used as an auxiliary with the past participle of an intransitive verb. In Old English, these constructions commonly occurred with intransitive verbs relating to motion or change.
2012-10-08 14:26:51 補充:
Examples of such verbs are: come, go, rise, set, fall, arrive, depart, grow. These constructions are in the "perfect tense," which describes an action or state completed.
2012-10-08 14:27:40 補充:
Now, of course, auxiliary HAVE has replaced auxiliary BE in these types of sentences: for example, "Father, I am glad you HAVE come." The use of HAVE arose slightly later than the use of BE in most of these cases, and for a time, the two forms co-existed.
2012-10-08 14:28:12 補充:
In fact, archaic grammatical construction was still being used in the 19th century: "I am lately arrived thence...she was now returned...she was become morose" (Charlotte Bront).
2012-10-08 14:31:26 補充:
Summary:
This grammatical construction is not passive voice. It is the old form of present perfect tense. It was used before the auxiliary HAVE was introduced to English.