晴天的英文是fine day。
一、同义词
Sunny day、clear day。
二、短语
1. a clear blue sky betokening a fine day
预示着好天气的晴朗蓝天。
2. The day turned out(to be)a fine day.
那天倒是好天气。
3.The splendid evening glow in the sky means another fine day tomorrow.
灿烂的晚霞预示明天又是好天气。
4.It ought to be a fine day tomorrow morning.
明天早晨大概是个好天气。
Fineday的例句：
1. On this splendid fine day,with the radiant sun illuminating the world,we embarked on a grand adventure,eager to explore the hidden treasures of nature and create everlasting memories.
在这个辉煌的美好日子里，明亮的太阳照亮了整个世界，我们踏上了一场宏大的冒险，渴望探索大自然的隐藏宝藏并创造永恒的回忆。
2. The picturesque landscape unfolded before our eyes,as we hiked through the majestic mountains and lush valleys,breathing in the crisp,invigorating air on this exceptionally fine day.
风景如画的景色在我们眼前展开，当我们徒步穿越雄伟的山脉和郁郁葱葱的山谷时，我们在这个异常美好的日子里呼吸着清新而令人振奋的空气。