MDS said:
- Ending a sentence with a preposition. There is actually a joke to help remember the rule: 'A preposition is not the kind of word to end a sentence with'.
The last English style guide I read (three years ago?) listed that as under the category of "bad form" rather than outright incorrect.
MDS said:
- Using apostrophes to indicate plurals - my favorite: CD's. The plural of CD is CDs. Think about spelling it out: 'Compact Discs' - not Compact Disc's.
The same style guide mentioned that as the once but no longer officially correct (I think 1970s -- but never years, as I just demonstrated) way of pluralizing acronyms. Not that most people have any way to use that as an excuse. I haven't really fact checked that though.
I remember a section on proper number usage that I have no hope for most people ever learning because the rules are horribly complicated
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A sentence beginning with a number is not written in numeric form except for dates. Correct: "Seventeen people arrived". Incorrect: "17 people arrived".
Except for the previously mentioned case, when a single number is used in a sentence it will be written out if it's less than two words and in numeral form otherwise (some guides say "if it's less than ten"). Correct: "He bought twenty-one boxes" or "He bought 1,027 boxes". Incorrect "He bought 21 boxes" or "He bought one thousand and twenty-seven boxes".
Sentences that contain more than a single number of similar usage should be written in numeral form. On the other hand, sentences that use numbers of different form should alternate between written out numbers and numeral numbers to differentiate what the numbers are describing.
Dates (as already touched upon), times, fractions, decimals, certain units, and addresses all have more special rules. It's awful, isn't it?
I'll let that be the end of my unofficial lesson on English grammar and style today
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