が早はやいか

expression

no sooner ... than ...; as soon as

Fixed expression attaching to the plain form of a verb. Emphasizes that the second action happens immediately after the first, often with a sense of urgency or surprise. Common in written and formal spoken Japanese.

• 彼かれは家いえに着つくが早はやいか、また出でかけてしまった。

  No sooner had he arrived home than he went out again.

• ベルが鳴なるが早はやいか、生せい徒とたちは教きょう室しつを飛とび出だした。

  As soon as the bell rang, the students rushed out of the classroom.