The main function of coordinating conjunctions is to join words, phrases, and clauses together. Aside from that, this type of conjunctions is placed in between the words or groups of words that it links together, and not at the beginning or at the end.
EXAMPLES:
Pizza and burgers are my favorite snacks.
The treasure was hidden in the cave or in the underground lagoon.
Warning:
In joining two words, phrases, or dependent clauses together, a comma is not required before the coordinating conjunction
Slide 2
coordinating conjunctions
Examples:
aliens and predators
by the beach or on the hill
what you see and what you get
On the other hand, you are linking more than two words, phrases, and dependent clauses together, a series of commas must be placed in between the distinct elements.
Ex:
spiders, snakes, and scorpions
in the bedroom, in the garage, or at the garden
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Coordinating conjunctions
For:
I want a salad for lunch.
So:
I needed a place to concentrate, so I went to the library.
But:
I like coffee, but I don't like tea
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Subordinating conjunctions
Subordinating conjunctions connect subordinate clauses to the main clause of a sentence:
I waited at home until she arrived.
He went to bed because he was tired.
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Subordinating conjunctions
Although
Before
Unless
While
Though
Since
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Subordinating conjunctions
I prefer to write while my children are at school.
Although she's small, she's very strong
Since I have no money, I can't go to the movie.
I won't go to the party unless they invite me.