JLPT N3 Grammar: たとたん (ta totan)

JLPT N3 Grammar: たとたん (ta totan)

Meaning: the moment; the instant; as soon as

How to use: Verb-casual, past + とたん（に）

For example:
1. 有名になったとたんに、彼は横柄な態度をとるようになった。
yūmei ni natta totan ni, kare wa ōheina taido o toru yō ni natta.
As soon as he became famous, he became arrogant.

2. 試験終了のベルが鳴ったとたんに教室が騒がしくなった。
shiken shūryō no beru ga natta totan ni kyōshitsu ga sawagashiku natta.
As soon as the bell rang for the end of the exam, the classroom became noisy.

3. 夏に入ったとたん、暑くなった。
natsu ni haitta totan, atsuku natta.
As soon as summer came, it got hot.

4. 窓を開けたとたん、強い風が入ってきた。
mado o aketa totan, tsuyoi kaze ga haitte kita.
As soon as the window was opened, the wind got in.

5. そう言ったとたん、彼は唇を噛んで後悔したが、もう遅かった。
sou itta totan, kare wa kuchibiru o kande koukai shita ga, mou osokatta.
As soon as he had spoken, he bit the words off, but it was too late.