若い頃モテたでしょの英語

She must have been a beauty in her day.

Young men are wild.

She was a reigning beauty in her day―a great toast in her day.

Youth is the time for learning.

in one's early days [years]

early in life

when one was a child―in one's infancy―early in life

Young men are wild

in one's younger days

in my days

sow one's wild oats

in one's infancy

One will grow out of one's youthful follies.

in one's youthful days

the rosy or heathy appearance of the cheeks or face of a youth

When I was young

childhood

“Gather roses while ye may.”【イディオム・格言的】

He was early thrown upon the world.

from childhood upward―early

at an early age

Sow one's wild oats.

the energetic and playful quality that is characterized by a person's youth

when hearts were young and gay

as a child

the time period of one's childhood

You are only young once.

from the cradle

He used to be a reckless fellow when he was young.

“Gather roses while you may”―から働け―“Work while you may.”