在夏天跳绳用英语可以说作 "jump rope in the summer"。

"Jump rope" 是英语中跳绳的常用说法，它来源于英语单词 "jump" 和 "rope" 的组合。"Jump" 是跳跃的意思，"rope" 是绳子的意思，所以 "jump rope" 就是跳绳的意思。

下面是一些英文例句及其中文翻译：

I used to jump rope every day during the summer when I was a kid. (我小时候每天夏天都跳绳。)
My friends and I are planning to jump rope at the park later this afternoon. (我和朋友们打算下午晚些时候在公园跳绳。)
Jumping rope is a great way to stay active and have fun during the hot summer months. (跳绳是在炎热的夏天保持活跃并玩得开心的好方法。)