Happy Birthday的英文歌詞如下：
Happy birthday to you!
祝妳生日快樂！
With joy and happiness too,
充滿喜悅和幸福
For it's your special day today.
因為今天是你特殊的一天
You are my dearest friend,
你是我最好的朋友
And I adore you completely.
我完全地崇拜你
So here's my gift to you,
所以這是我的禮物
A wish that your life is wonderful.
一個希望你的人生精彩的願望
Happy birthday to you!
祝你生日快樂！
May all your dreams come true,
願你所有的夢想成真
And your wishes all be true,
願你的願望都成真
For today, you are the lucky one.
因為今天，你是幸運的
Chorus:
Happy birthday to you!
祝妳生日快樂！
Happy birthday, dear one.
生日快樂，親愛的。
Life's journey is not easy,
人生的旅程並不容易
So enjoy each moment dear.
所以請珍惜每一刻，親愛的。
The years will soon be gone,
歲月如梭，時光匆匆
And you will laugh and sing along.
你會笑著唱歌，一路歡唱
But till that day arrives,
但直到那一天來臨，
I'll always be here to say.
我會在這裡說：
Happy birthday to you!祝你生日快樂！