中高的英文

用is。medium height中等身高短语：be of medium height是属于中等身高 例句：1. He isn't tall or short.He is of medium height.他不高也不矮，中等身高。2. The young man was of medium height for his age.这个年轻人在同龄人中属中等身高。

二者都可以，可以选修

他中等身高。He is of medium height.He has a medium height.他中等身材。He is of medium bulid/body.He has a medium build/body.

British English: 中学(包括初中和高中)secondary schoolAmerican English:初中:junior high school 高中:high school美国高中当然可以选修啦,就连我们高中都可以的叫做elective course;)