Conjunctions

Introduccion:
In grammar, a conjunction (abbreviated conj or cnj) is a part of speech that connects two words, phrases or clauses together. This definition may overlap with that of other parts ofspeech, so what constitutes a "conjunction" should be defined for each language. In general, a conjunction is an invariable grammatical particle, and it may or may not stand between the items itconjoins.
The definition can also be extended to idiomatic phrases that behave as a unit with the same function as a single-word conjunction (as well as, provided that, etc.).
Coordinating Conjunctionsjoin equals to one another:
            words to words,          phrases to phrases,          clauses to clauses.
Examples:
WORD TO WORD: Mos tchildren like cookies and milk
PHRASE TO PHRASE: Thegold is hidden at the beach or by the lakeside.
CLAUSE TO CLAUSE: What you say and what you do are two different things.
Coordinating conjunctions usually form looser connections than otherconjunctions do.
Examples:
Marge was late for work, and she received a cut in pay. (very loose)
Marge was late foir work, so she received a cut in pay. (loose)
BECAUSE. Marge was kate for work, she receiveda cut in pay.
(The subordinate conjunction BECAUSE creates a tighter link between the two ideas).
Coordinating conjunctions go in between items joined, not at the beginning or end.
Examples:Correct: I like cofee, but i don’t like tea.
Incorrect: But i don’t like tea, I like cofee.
Punctuation with coordinating conjunctions:
When a coordinating conjunction joins two words, phrases, orsubordinate clauses, no comma should be placed before the conjunction.
Examples:
Words: cookies and milk
Phrases: at the beach or by the lakeside.
Subordinate clauses: what you say and what you do.A coordinating conjunction joining three or more words, phrases, or subordinate clauses creates a series and requires commas between the elements.
Examples:
Words: peanuts, cookies, and milk...