升入初中用英语怎么说?

"Entering junior high" is a common way to describe this in English.

This phrase is commonly used in English-speaking countries to describe the transition from elementary/primary school to secondary school, which typically includes grades 7 to 9.

Example sentences:

"I'm excited to enter junior high next year."
(我很高兴明年升入初中。)
"She's a bit nervous about entering junior high."
(她有点紧张升入初中。)
"He's proud to have completed elementary school and be entering junior high."
(他为完成小学并升入初中感到骄傲。)