今天跟大雨用英文怎么说

今天有大雨，英文可以说是 "It's raining heavily today"。

这句话的来源是英语中常用的表达方式，"it's raining" 表示正在下雨，加上副词 "heavily" 表示下得很大。

下面是一些英文例句及其中文翻译：

"I can't go out, it's raining cats and dogs." (我不能出门，外面大雨倾盆。)
"I forgot my umbrella at home, and now I'm getting soaked in the rain." (我把伞忘在家里了，现在我被雨水淋湿了。)
"The forecast says it's going to rain all day." (天气预报说今天一整天都会下雨。)