关于这个问题，四年级上学期第一单元口语交际内容可以包括以下几个方面：

1. 问候与自我介绍：

- Hello! What's your name?

- My name is [名字]. What about you?

- I'm [名字]. Nice to meet you!

2. 询问个人信息：

- How old are you?

- I'm [年龄] years old. And you?

- I'm [年龄] too.

3. 家庭成员与兴趣爱好：

- How many people are there in your family?

- There are [数字] people in my family. I have [兄弟姐妹数量] brothers/sisters.

- What do you like to do in your free time?

- I like [活动/兴趣爱好], such as [具体活动/兴趣爱好].

4. 询问学校情况：

- Which school do you go to?

- I go to [学校名字]. What about you?

- I go to [学校名字] too.

5. 描述学校设施与课程：

- What facilities does your school have?

- My school has a library, a playground, and a computer room.

- What subjects do you study in school?

- I study Chinese, Math, English, Science, and Art.

6. 邀请与约定：

- Would you like to come to my house for a playdate?

- Sure! When?

- How about this Saturday afternoon?

- That sounds great! See you then!

以上是口语交际的一些基本内容，可以根据具体情况进行灵活组合和扩展。