愉快的英文句子有很多，以下是一些例句：
Be full of the joys of spring. 春天充滿了快樂。
Like a dog with two tails. 非常開心。
Have a whale of a time. 玩得非常痛快。
Be on cloud nine. 異常興奮。
Tickled pink. 高興極了。
On top of the world. 極度幸福。
Happy as a clam. 非常快活。
Buzzing. 興奮的。
Be over the moon. 非常高興。
In seventh heaven. 極其高興的。
The most beautiful face in the world is a smiling face, and happy people are the most beautiful. 世界上最美的臉是笑臉，快樂的人最美麗。
Happiness is a state of mind. It has nothing to do with wealth, age and environment. 快樂是一種心境，與財富、年齡和環境無關。
Doing good is the only thing that is truly happy in life. 做好事是人生中確實快樂的行動。
The best facial skin care products are smile and goodwill. 最好的臉部保養品，就是微笑與善念。
If you want to be happy, don't let yourself get depressed. 想得到快樂，就別讓自己過得無精打采。
He was just as happy as a little bird singing there. 他心裡高高興興，像有一隻小鳥在那唱歌。
The world is beautiful, and happiness is everywhere. 世界上沒有比快樂更能使人美麗的化妝品。