不是第一次了

not the first time

→ 不

phrase Rare #20,429

not the first time Says that something has happened before; 了 emphasizes that this is already the case.

CH: 他又忘了带钥匙，这不是第一次了。

EN: He forgot his keys again; it’s not the first time.

This isn't the first time, either.

— 伊莲娜 (2011)

This isn't the first time.

— 阿黛尔的生活 (2013)

It's not like it's the first time.

— 哭声 (2016)

Unfortunately, it’s not the first time.

— 办公室的故事 (1977)

This isn’t the first time.

— 为所应为 (1989)

This isn’t the first time he’s done this.

Diane, this isn't the first time, is it?

— 妈咪 (2014)