以下是三年级英语分类的一些常见类别：
1. 学习用品类：pencil, eraser, ruler, book, bag, notebook, dictionary, etc.
2. 动物类：cat, dog, bird, rabbit, fish, etc.
3. 水果类：apple, banana, orange, grapes, watermelon, etc.
4. 颜色类：red, blue, green, yellow, black, white, etc.
5. 数字类：one, two, three, four, five, six, seven, eight, nine, ten, etc.
6. 季节类：spring, summer, autumn, winter, etc.
7. 家庭成员类：mother, father, brother, sister, etc.
8. 交通工具类：car, bus, train, plane, boat, etc.
9. 食品类：hamburger, pizza, sushi, noodles, dumplings, etc.
10. 运动类：soccer, basketball, baseball, tennis, swimming, etc.