1、三年级的英语单词：Third grade，英 [θɜːd ɡreɪd] 美 [θɜːrd ɡreɪd]。

2、她的女儿在一所初级中学读三年级。Her daughter studies in the third grade in a junior high school.

3、皮博迪教育学院一项针对田纳西州志愿幼儿园前教育项目的新研究报告指出，幼儿园前教育是有用的，但是从中所受的教益无法维持到三年级。A new Peabody study of the Tennessee Voluntary Pre-K program reports that pre-K works, but the gains are not sustained through the third grade.