In British English one writes the 1980s, but in American English 1980's seems to be pretty standard. The British version seems sounder as there is no contraction or omission. =============== While the use of the apostrophe in the example used to be commonplace (and, I submit, erroneous), it seems to be fast going the way of the Dodo Bird. Only a nitpicker worse than myself, however, would object to either.
An apostrophe with omission describes contractions and special uses like o'er and o'clock.Some contractions are:He'llWe'reShe'd
Australia officially uses British-English.The correct spelling in British-English (and therefore in Australia) is centre.In American-English, the correct spelling is center. American-English is considered incorrect in British-English countries.
Some nouns that show ownership using an apostrophe are "couch's, house's, equation's", etc.
British spelling uses optimisation. American spelling uses optimization. So both are correct.
The apostrophe has two functions: to indicate missing letters due to contraction or abbreviation, and to indicate the possessive. I can't tell you which of the two is the apostrophe's main function. (The previous sentence uses both: "can't" is a contraction and "apostrophe's" is a possessive)
They are both correct. Note: Cambridge uses British English.
A possessive pronoun uses an apostrophe to show possession, such as "one's" or "someone's."
apostrophe
An apostrophe with omission describes contractions and special uses like o'er and o'clock.Some contractions are:He'llWe'reShe'd
Australia officially uses British-English.The correct spelling in British-English (and therefore in Australia) is centre.In American-English, the correct spelling is center. American-English is considered incorrect in British-English countries.
Some nouns that show ownership using an apostrophe are "couch's, house's, equation's", etc.
Valentine's Day uses an apostrophe. However, most people just use the plural form valentines for cards.
No, the word "your" does not require an apostrophe. "Your" is a possessive pronoun, while "you're" is a contraction for "you are" that uses an apostrophe.
British spelling uses optimisation. American spelling uses optimization. So both are correct.
apostrophe
"it's" is a contraction for "it is".The possessive form is "its" (no apostrophe).This is a confusing one because almost every possessive uses the apostrophe.So your sentence should be "The crow pecked at itsfood."
The apostrophe has two functions: to indicate missing letters due to contraction or abbreviation, and to indicate the possessive. I can't tell you which of the two is the apostrophe's main function. (The previous sentence uses both: "can't" is a contraction and "apostrophe's" is a possessive)