Japatan
Formation
- Vて形 + からというもの
Explanation
A てからというもの B means that ever since A, which was a turning point, the state in B has continued. B describes a big change in behavior or circumstances compared to before. It sounds more emotional than plain てから. B cannot be a single event, an intention or a command.
Examples
犬を 飼い始めてからというもの、毎朝散歩するようになった。
Ever since I got a dog, I've been going for a walk every morning.
彼女は留学から 帰ってきてからというもの、前よりずっと積極的になった。
Since she came back from studying abroad, she has become much more outgoing.
スマートフォンを 持ってからというもの、本をあまり読まなくなった。
Ever since I got a smartphone, I hardly read books anymore.
新しい部長が 来てからというもの、職場の雰囲気が明るくなった。
Since the new manager arrived, the atmosphere at work has become much brighter.
Notes
It is not normally used for very recent events like yesterday. The second part often uses forms showing a continuing state, such as ようになった, なくなった or ている.
Related grammar
Mini quiz
1禁煙（ ）からというもの、体の調子がとてもいい。
Answer and explanation
Answer: 4 して
からというもの follows the te-form. The sentence means: Ever since I quit smoking, I have been feeling very well.
2「〜てからというもの」の使い方が正しい文はどれか。
Answer and explanation
Answer: 2 料理教室に通い始めてからというもの、毎日自分で弁当を作っている。
The second part must be a lasting state. 2 means: Ever since I started going to cooking classes, I make my own lunch every day. 1 is a one-time event, 3 a future plan, and 4 a request.
3祖母は孫が生まれて（ ）、毎日楽しそうにしている。
Answer and explanation
Answer: 3 からというもの
The sentence means: Ever since her grandchild was born, my grandmother has looked happy every day. からには expresses resolve, からといって means just because, and からでないと gives a condition.
