根据搜索结果，四年级上册英语自我介绍的八句话可参考以下结构，结合权威性和适用性整理如下：

一、基础信息

姓名与年龄

My name is... / My English name is... / I am... years old.

示例：My name is Peter. I am ten years old.

家庭背景

I come from... / There are... people in my family.

示例：I come from Taiwan. There are 4 people in my family.

二、性格与兴趣

性格特点

I am a... boy/girl. / I am... （tall, short, fat, thin, lovely, naughty）.

示例：I am a talkative person.

爱好与特长

I like... （playing basketball, reading, swimming, computer games）. / I am good at... （Chinese, English, math）.

示例：I like playing basketball and reading books.

三、学习与生活

学校情况

I am a primary school student. / I study in... Grade... Class...

日常习惯

I often help my mother do housework. / I get up early because my home is near the school.

四、其他补充

喜好颜色/季节

I like... （blue, red, Tuesday）. / I like... （summer, winter）.

示例：I like blue and red.

朋友与特长

My best friend is... / I am... （clever, helpful）.

示例：My best friend is Caichenglai.

注意事项：

优先使用简单句型，避免复杂结构；

可根据实际情况调整内容，如增加特长或家庭背景描述；

注意语法准确性，如名词复数、动词时态等。