Scarcely had the teacher begun the lesson __________________.

• No sooner had ..... than, Scarcely had ....... when, hardly had ..... before থাকলে than, when, when এর পূর্বে verb এর past participle এবং পরে verb এর past form হয়।
• অর্থাৎ, Scarcely had দ্বারা বাক্য শুরু হলে পরের clause টি when দ্বারা শুরু করতে হয় এবং প্রথম clause টি past perfect + verb এর past participle এবং দ্বিতীয় clause টি past indefinite হয়।
- নিয়মানুযায়ী সঠিক উত্তর - Scarcely had the teacher begun the lesson when the students started asking questions.

• মনে রাখা জরুরি,
- no sooner...than, scarcely..when, hardly...when এভাবে আসে।
- যেমন:
- No sooner had the thief seen the police than he ran away.
- Hardly had I reached the station when the train came.
- Scarcely had we reached the station, when the train left.