"我打算成为一名校长" 用英语说为 "I plan to become a principal."
principal 是英语中的名词，意思是校长。这个词的来源是拉丁语的 "principaps"，意思是首领、主要的。
例句：
"I have always wanted to be a school principal and make a positive impact on students' pves." (我一直想成为一名校长，对学生的生活产生积极影响。)
"The principal announced that the school would be closed for the day due to snow." (校长宣布由于下雪学校会停课一天。)
"I met with the principal to discuss my child's progress in school." (我和校长见面讨论我孩子在学校的进步。)