长时间不吃饭英文怎么说

长时间不吃饭英语可以用 "to go without food for a long time" 来表示。

这个表达的来源是英语中 "go without" 的固定用法，意思是 "没有（某物）"，例如：

I can't go without my phone for even a day. 我连一天也离不开我的手机。
She went without lunch because she was so busy. 她由于太忙，没吃午饭。

这里的 "food" 指的是人们常用来摄取能量的东西，可以是饮料、食品等。

下面是一些使用 "to go without food for a long time" 的例句，希望能帮到你：

He went without food for three days during his hike in the mountains. 他在山里徒步旅行时三天没吃东西。
She went without food for a week during her fast. 她在绝食期间一周没吃东西。
They went without food for several days while they were stranded on the island. 他们在被困在岛上几天没吃东西。