Coordinative Conjunctions :
Read the following.
The man opened the door. I went in.
These two sentences can be combined into one sentence as…
The man opened the door and I went in.
The two short sentences are linked by the conjunction AND to form another sentence. This sentence contains two subjects and two predicates.
Its pattern is…
Subject 1 + predicate 1+ conjunction + subject 2+ predicate 2
The man opeded the gate and I went in.
Each of the sentences had become part of another sentence and become a clause.
Those two sentences may also be combined into a sentence rather different from the above.
When the man opened the door, I went in.
This sentence too contains two subjects and two predicates. We have used a different conjunction (when) here and it is placed at the beginning.
Compare the following clauses.
The man opened the door…..(Clause – 1)
When the man opened the door…..(Clause – 2)
I went in….
Clause 1 can stand by itself and makes sense without the help of the other clause.
Such clauses as these are called Main Clause.
Clause 2 cannot stand on its won and depends on anther clause (I went in).
Clauses such as this are called Subordinate Clauses.
Sentence containg two main clauses :
The boy saw the moneky and (he) ran way.
He wants to go, but he is busy.
I had flu, so I was absent.
Sentences containing one main clause + one subordinate clause :
Before we reached the station the train had left.
Though he worked hard, he failed the examination.
I threw it away because I was tired of it.
I supposed that he wan honest.
The conjunction in each of these sentences is there. A subordinate clause may come either before a main clause or after it.
Main clauses are joined by words like and, or, but, yet, so, therefore, etc.
These are called Coordinative Conjunctions.
They may also joinone subordinate clause to another.
This is the man who stole my purse and ran away.
In the above sentence AND joins the two subordinate clause “who stole my purse” and “who ran away”.
Coordinating conjunctions join words or word groups of equal rank.
A subordinate clause is joined to main clause by words like when, where, till, until, before, after, as, because, though, although, that, etc.
These are called Subordinating Conjunctions.
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