He used to worked as a teacher.句中worked 应该用原型work吧?

问题描述:

He used to worked as a teacher.句中worked 应该用原型work吧?
新概念笔记中的句子

对,应该用原型,这句话中用错了.used to do 表示过去经常做的事情,而现在不再做这件事了.
这句话意思是他过去是一名老师.