以下是三年級上下冊英語常用表達法的一些例子：

1. 數字：one, two, three, four, five, six, seven, eight, nine, ten

2. 問候語：hello, hi, good morning, good afternoon, good evening, how are you?

3. 顏色：red, blue, green, yellow, orange, purple

4. 動物：cat, dog, rabbit, bird, fish

5. 水果：apple, banana, orange, grapes, watermelon

6. 食物：noodles, rice, bread, chicken, beef

7. 家庭成員：father, mother, sister, brother, grandma, grandpa

8. 季節：spring (春天), summer (夏天), autumn (秋天), winter (冬天)

9. 天氣：sunny (晴朗的), rainy (下雨的), snowy (下雪的)

10. 交通工具：bus (公交車), car (小汽車), bike (自行車), train (火車), plane (飛機)