同桌考29分英语可以翻译为 "My classmate scored 29 points on the Engpsh exam." 或者 "My classmate got 29 points on the Engpsh exam."
这个表达的来源是指考试时，同桌考了29分的英语成绩。
一些英文例句和中文翻译如下：
"My sister only got 29 points on her Engpsh test. She needs to study harder." (我姐姐英语考试只考了29分。她需要加强学习。)
"My friend scored 29 points on the Engpsh exam. He was really disappointed." (我朋友英语考试考了29分。他真的很失望。)
"I was surprised when I saw that my classmate got 29 points on the Engpsh test. She usually does well." (我很惊讶看到我的同桌英语考试考了29分。她平常成绩都不错。)