When there is more than one.
Examples:
I'm taking a vacation next month. (singular)
I've taken two vacations already this year. (plural)
Vacation is a noun and a verb. Noun: They took a vacation to Florida. Verb: They vacation in France each year.
The plural past plural form of the verb to be is were.Example: My parents are home now. They were on vacation in Canada.
The correct form is two weeks' vacation (a vacation of two weeks).
Plural form is "parentheses", and is pronounced with an "eez" at the end instead is "is".
The plural form of the noun pagoda is pagodas.The plural possessive form is pagodas'.Example: This is my vacation photo of the pagodas' roofsgleaming in the sun.
The possessive form for the plural noun weeks is weeks'.Example: I have accrued three weeks' vacation this year.
Vacations (holidays form work) are a human invention and only apply to humans. Wild animals such as song birds can not and do not take vacations. They may migrate to different parts of the world during certain seasons, but this is to ensure that their food supply is maintained, it is not a vacation.
It depends on the context. Typically the noun you used to describe living would be plural instead of the word living. Living has no plural form.
The possessive form for the plural noun weeks is weeks'.Example: I have accrued three weeks' vacation this year.
The plural form of Mr Jones is Messrs Jones.
Vacations (holidays form work) are a human invention and only apply to humans. Wild animals such as song birds can not and do not take vacations. They may migrate to different parts of the world during certain seasons, but this is to ensure that their food supply is maintained, it is not a vacation.
That's pretty simple actually, the plural form of synthesis is syntheses! Just an E instead of an I at the end! Hope this helps!!! :D