要经常反复的英文怎么说

要经常反复的英语可以用以下几种表达方式来表示：

Repetitive: 这个词本身就有反复的意思，可以用来形容动作、行为或声音等等经常重复的东西。例如：
The repetitive sound of the rain was soothing. (雨声的反复声音是令人放松的。)
The repetitive exercise routine was getting boring. (反复的锻炼计划变得无聊了。)
Repeated: 这个词也有重复的意思，可以用来形容一件事情或动作被反复地重复。例如：
The repeated warnings went unheeded. (被反复警告但没有被重视。)
The repeated requests for help finally got through to him. (反复要求帮助终于让他明白了。)
Recurring: 这个词有反复出现的意思，常用来形容某种情况或问题经常出现。例如：
The recurring problem with the computer was finally fixed. (计算机上反复出现的问题终于解决了。)
She was worried about the recurring headache she had been experiencing. (她担心她一直有反复出现的头痛。)

所有这些词都来自拉丁文，并在英文中通常用作形容词来表示反复的意思。