"经常使我开心"的英文表达可以是"something that often makes me happy"或者"something that frequently brings me joy"。

这个表达方式来自于英文中"make"和"bring"的意思，都表示"使"或者"带来"的意思。"Make"在这里是动词，表示使某人或物处于某种状态；"bring"也是动词，表示把某物带到某地或某人身边。

下面是一些例句：

Playing with my dog always makes me happy. (和我的狗玩耍总是让我开心。)
Reading a good book frequently brings me joy. (经常看好书常常带给我快乐。)
Going for a walk in the park often makes me happy. (经常在公园散步经常使我开心。)
Spending time with my family frequently brings me joy. (经常和家人在一起经常带给我快乐。)