在八岁时的英文

at the age of eight /8

an eight-year-old boywhen he was eightat the age of eight

when he was eight years oldat the age of eightwhen he was an eight-year-old boy亲：祝你学习进步，每天都开心V_V！望采纳，thx!Mr Gao

When he was eightAt the age of eightin his eighth

eight years old

用于年龄的短语：

age和year old可用于准确的年龄，其句型为：

A：one’s age(s)+be+数字

如：

B：人+be+数字+（years old）

如：

另外，表示年龄大约多少岁时，可用下列介词短语（以50岁为例）：

when he is eightat the age of eightat age eight