英文諺語 A friend in need is a friend indeed
A friend in need is a friend indeed 患難之友，乃為真友
A true friend is a person who will help you when you really need help.
A version of this proverb was known by the 3rd century BC. Quintus Ennius wrote: ‘Amicu certus in re incerta cernitur’. This translates from the Latin as ‘a sure friend is known when in difficulty’.
The Oxford Dictionary of Quotations lists it as existing in English from the 11th century.