Apostrophe
Apostrophe is a sign that is used to indicate ownership or relationship.
For Example:
My brother's pen Allan's House
Where is your mother's sister?
Apostrophe Rules
1. Apostrophe is placed after "s" when it is a plural noun.
Students' hostel, workers' area, writers' society.
The match started soon after the players' arrival.
2. Apostrophe is used for plural nouns, not ending in "s".
The people's army, women's library, children's park.
We went to the Young Men's hostel at the farthest end of the city.
3. Apostrophe is used to show that some letters or figures have been left
out.
Can't (cannot), don't (do not), shouldn't (should not) '14 (2014)
4. Apostrophe is placed after the last word in a noun made up of more than
one word.
The commander-in-chief's rod
The Minister of Interior's speech
John of Arc's life mission.
The full stop, the comma, the question mark, the inverted commas, and the apostrophe are most commonly used punctuation marks.
5. Apostrophe is placed after the second noun when it is in ownership,
possession , etc. together with the first noun.
We went to Allan and Barney's house.
The lawyers and politicians' association.
The students and scholars' club.
6. When ownership, possession , etc. is not joint, each noun will take the
apostrophe.
Barney's and Sybil's houses.
The teachers' and doctors' association.
7. When the sound of the letter "s" is quite loud and repeated in a word, we
can at times leave out "s" after the apostrophe.
Keats's poems (or Keats' poems)
Professor Sheets's class (or Sheets' class)
For the sake of decency (or decency sake)
8. Apostrophe is used to indicate the leaving out (omission) of letters.
They are (they're), do not (don't), telephone ('phone)
9. Apostrophe is used to indicate shortened dates of years.
The French Revolution of '89. Such shortened dates generally refer to famous
historical events.