三年级上册英语课本的课文翻译如下：
Unit 1:
1. Hello!
2. Hi!
3. My name is [Your Name].
4. What is your name？
5. Goodbye!
Unit 2:
1. Good morning, [Teacher's Name].
2. Hello, [Student's Name].
3. Hello, [Student's Name].
4. Are you [Student's Name]？
5. Yes, I am.
6. No, I am not.
7. Goodbye!
Unit 3:
1. Let's paint!
2. OK!
3. Hello, [Teacher's Name].
4. How are you？
5. Fine, thank you.
6. How old are you？
7. I'm [Your Age] years old.
8. Me too.
这些翻译涵盖了三年级上册英语课本中的一些基本对话和自我介绍。希望这些信息对你有所帮助。如果有更多具体的课文或句子需要翻译，请告诉我。