MP3 Here. It was said to be written by Henry VIII of England.

Lyric:

Alas my love, you do me wrong
To cast me off discourteously
I have loved you all so long
Delighting in your company

Greensleeves was all my joy
Greensleeves was my delight
Greensleeves was my heart of gold
And who but my Lady Greensleeves

I have been ready at your hand
To grant whatever you would crave
I have both waged life and land
Your love and good will for to have

Greensleeves was all my joy
Greensleeves was my delight
Greensleeves was my heart of gold
And who but my Lady Greensleeves

Thou couldst desire no earthly thing
But still thou hadst it readily
Thy music still to play and sing
And yet thou wouldst not love me

Greensleeves was all my joy
Greensleeves was my delight
Greensleeves was my heart of gold
And who but my Lady Greensleeves

Greensleeves now farewell adieu
God I pray to prosper thee
For I am still thy lover true
Come once again and love me

Greensleeves was all my joy
Greensleeves was my delight
Greensleeves was my heart of gold
And who but my Lady Greensleeves

An excellent translation to Chinese:

1
我思断肠，伊人不臧。
弃我远去，抑郁难当。
我心相属，日久月长。
与卿相依，地老天荒。

绿袖招兮，我心欢朗。
绿袖飘兮，我心痴狂。
绿袖摇兮，我心流光。
绿袖永兮，非我新娘。

2
我即相偎，柔荑纤香。
我自相许，舍身何妨。
欲求永年，此生归偿。
回首欢爱，四顾茫茫。

绿袖招兮，我心欢朗。
绿袖飘兮，我心痴狂。
绿袖摇兮，我心流光。
绿袖永兮，非我新娘。

3
伊人隔尘，我亦无望。
彼端箜篌，渐疏渐响。
人既永绝，心自飘霜。
斥欢斥爱，绿袖无常。

绿袖招兮，我心欢朗。
绿袖飘兮，我心痴狂。
绿袖摇兮，我心流光。
绿袖永兮，非我新娘。

4
绿袖去矣，付与流觞。
我燃心香，寄语上苍。
我心犹炽，不灭不伤。
伫立垅间，待伊归乡。

绿袖招兮，我心欢朗。
绿袖飘兮，我心痴狂。
绿袖摇兮，我心流光。
绿袖永兮，非我新娘。

** Sorry, I collected this however I forgot the translator, who know? Pls tell me.