You add ~ to numbers written in figures and ending in 1–but not 11–in order to form ordinal numbers.
...Sunday 1st August 1993.
...the 101st Airborne Division.
SUFFIX
You add ~ to numbers written in figures and ending in 1–but not 11–in order to form ordinal numbers.
...Sunday 1st August 1993.
...the 101st Airborne Division.
SUFFIX
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012