Grammar 101, ... or, pet peeves Options

[agrippa]

Here's a place for us to bore eachother to death about grammar. I'll go first.

I. POSSESSIVES AND PLURALS

Most nouns are made plural by the addition of 's' or 'es'.
computer -> computers
house -> houses

Some nouns have irregular plurals.
mouse -> mice
fish -> fish

A noun is never made plural with an apostrophe.

The apostrope and 's' are used to show possession.
Ron's (belonging to Ron)
Ginny's (belonging to Ginny)

However, pronouns have their own possessive forms:
his (belonging to him)
hers (belonging to her)
theirs (belonging to them)
its (belonging to it; it's means 'it is')

[agrippa]

III. Compound sentences.

A sentence has both a subject (a noun or pronoun who does the action, and the adjectives and phrases that modify it) and a predicate (a verb indicating the action, plus its objects and thier modifiers).

A sentence that does not have both subject and predicate is a fragment.

Sentences can be compounded in these ways:
1. A conjunction (and, or, nor, but)
2. A semicolon.

Example:
Harry ran down the corridor. He opened the door.
With conjunction: Harry ran down the corridor and opened the door.
With semicolon: Harry ran down the corridor; he opened the door.

A comma splice is a grammatical error in which a comma is used to compound two sentences:

Comma splice (incorrect): Harry ran down the corridor, he opened the door.