既⋯⋯，又/也⋯⋯
Explanation
这个结构用来表示某人或某物同时具有两种性质、情况或能力，"既"引出第一种情况，"又/也"引出第二种情况。
This structure is used to indicate that someone or something has two qualities, situations, or abilities simultaneously. "既" introduces the first situation, while "又/也" introduces the second.
Examples
这件新衣服既好看，又暖和。
This new outfit is both good-looking and warm.
他既会学习，又会玩儿。
He is good at both studying and having fun.
他既是我们的老师，也是我们的朋友。
He is both our teacher and our friend.
Related Grammar Points
不是⋯⋯，而是⋯⋯HSK 4四43
句子的类型 · 并列复句
该结构用于否定前项并肯定后项，强调正确原因或事实，常用来澄清误解或纠正错误认知。
This structure denies the first part while affirming the second, emphasizing the correct reason or fact to clarify misunderstandings or correct errors.
Examples (3)
我不是不想去，而是没时间。
It's not that I don't want to go, but I don't have time.
这不是我的书，而是他的。
This book is not mine, but his.
这件事错的不是我，而是他。
The fault in this matter was not mine, but his.