在英语中，当天气晴朗时，通常会使用以下几种短语来表示：
"It's a clear day." (天气晴朗)
"The sky is blue." (天空是蓝色的)
"It's a sunny day." (是一个阳光明媚的日子)
"It's a beautiful day." (是一个美好的日子)
例句：
"Look at that clear blue sky! It's going to be a great day for a picnic." (看那湛蓝的天空！今天是个野餐的好日子。)
"I love days pke this when the sun is shining and the sky is clear." (我喜欢这样的日子，阳光明媚，天空晴朗。)
"It's a clear day." (天气晴朗)
"The sky is blue." (天空是蓝色的)
"It's a sunny day." (是一个阳光明媚的日子)
"It's a beautiful day." (是一个美好的日子)
例句：
"Look at that clear blue sky! It's going to be a great day for a picnic." (看那湛蓝的天空！今天是个野餐的好日子。)
"I love days pke this when the sun is shining and the sky is clear." (我喜欢这样的日子，阳光明媚，天空晴朗。)