To make a possessive, you add an apostrophe and the letter "s".
The astronomer's telescope was focused on the planet Jupiter.
If there is more than one astronomer, the "s" would come after the "r", and then the apostrophe comes AFTER "s".
The astronomers' telescopes were all pointed in different directions.
The only time you do not use an apostrophe for a possessive is with the third person pronoun "it".
The trout's eggs were by the black rock until the fisherman stepped in its nest
The possessive form of the noun sky is sky's(the sky's color).
The plural possessive form of "Zeus" is "Zeuses'."
The possessive form of the singular, uncountable noun spacecraft is spacecraft's.Example: The spacecraft's crew arrived safely.
The plural is stars. The plural possessive is stars'.
The possessive form of the plural noun stars is stars'.example: The stars' dressing rooms were very luxurious.
The possessive form of the word dictionary is dictionary's.
The singular possessive form is word's, for example the word's definition.
possessive form for the word holders: holders'
the possessive form of the word Cathie: Cathie's
possessive form of the word Cathi: Cathi's
possessive form of the word Congress: Congress'
possessive form of the word glass: glass'
The possessive form of the word "month" is "month's."
The possessive form is Lindbergh's.
The possessive form is weaver's.
The possessive form for the interrogative pronoun who is whose.
The singular possessive form of jury is jury's