The plural form of week is weeks.
The plural form of the noun week is weeks.The plural possessive form is weeks'.Example: The course is a three weeks' duration.
The plural of day is days. As in "the days are bright in the Summer".
Day is "gün" in Turkish. Days are "Günler" We add "ler" or "lar" for making words plural.
No, he is NOT
The days of the week are common nouns in French. They are not capitalized and they take an "s" as their plural mark (je vais à l'école tous les lundis).
The plural form of the noun week is weeks.The plural possessive form is weeks'.Example: The course is a three weeks' duration.
The plural form is days. The plural possessive is days'.
The noun 'days' is the plural form of the singular noun 'day'.
The plural of "day" is "days."
Both "what days of the week" and "which days of the week" are correct; however, "which days of the week" is typically used when the choices are limited, while "what days of the week" is more open-ended.
Seven days in a week is more generally used than seven days in the week, except if in reference to a specific week such as 'the seven days in the week' when referring to a specific week, such as the week before Christmas.