五年级上册英语第三单元的单词包括：apple, banana, orange, watermelon, grape, strawberry, pineapple, lemon, cherry, pear, mango, and kiwi.

一些句子示例：

2. The orange is juicy and sweet.

3. Watermelon is my favorite fruit in the summer.

5. I love the taste of strawberries.

6. Pineapples are spiky on the outside.

7. Lemons are sour, but they make good lemonade.