Conjunctions

A conjunction is a word that "joins". A conjunction joins two parts of a sentence.

Here are some example conjunctions:

Coordinating Conjunctions	Subordinating Conjunctions
and, but, or, nor, for, yet, so	although, because, since, unless

We can consider conjunctions from three aspects.

Form

Conjunctions have three basic forms:

Single Word
for example: and, but, because, although
Compound (often ending with as or that)
for example: provided that, as long as, in order that
Correlative (surrounding an adverb or adjective)
for example: so...that

Conjunctions have two basic functions or "jobs":

Coordinating conjunctions are used to join two parts of a sentence that are grammatically equal. The two parts may be single words or clauses, for example:
- Jack and Jill went up the hill.
- The water was warm, but I didn't go swimming.
Subordinating conjunctions are used to join a subordinate dependent clause to a main clause, for example:
- I went swimming although it was cold.

Coordinating conjunctions always come between the words or clauses that they join.
Subordinating conjunctions usually come at the beginning of the subordinate clause.

The short, simple conjunctions are called "coordinating conjunctions":

A coordinating conjunction joins parts of a sentence (for example words or independent clauses) that are grammatically equal or similar.

I like [tea] and [coffee].Look at these examples - the two elements that the coordinating conjunction joins are shown in square brackets [ ]:

Coordinating conjunctions always come between the words or clauses that they join.

When a coordinating conjunction joins independent clauses, it is always correct to place a comma before the conjunction:

I want to work as an interpreter in the future, so I am studying Russian at university.

However, if the independent clauses are short and well-balanced, a comma is not really essential:

When "and" is used with the last word of a list, a comma is optional:

The majority of conjunctions are "subordinating conjunctions". Common subordinating conjunctions are:

after, although, as, because, before, how, if, once, since, than, that, though, till, until, when, where, whether, while

Look at this example:

main or independent clause	subordinate or dependent clause
Ram went swimming	although	it was raining.
	subordinating conjunction

EXERCISES

1.	Receptionists must be able to relay information ______ pass messages accurately.

	(A)	or
	(B)	and
	(C)	but
	(D)	because

2.	I did not go to the show ______ I had already seen it.

	(A)	until
	(B)	because
	(C)	so
	(D)	but

3.	Mary is a member of the Historical Society ______ the Literary Society.

	(A)	as
	(B)	or
	(C)	and
	(D)	but

4.	Read over your answers ______ correct all mistakes before you pass them up.

	(A)	or
	(B)	and
	(C)	because
	(D)	while

5.	Keep the food covered ______ the flies will contaminate it.

	(A)	or
	(B)	and
	(C)	until
	(D)	though

6.	______ he is thin, he is strong.

	(A)	But
	(B)	As
	(C)	Though
	(D)	Because

7.	Susie ______ phoned ______ wrote after she left home.

	(A)	either, or
	(B)	neither, nor
	(C)	while, and
	(D)	though, or

8.	She had an unpleasant experience ______ she was in Thailand.

	(A)	but
	(B)	and
	(C)	because
	(D)	while

9.	The committee rejected the proposal ______ they did not think it was practical.

	(A)	or
	(B)	but
	(C)	though
	(D)	because

10.	John welcomed his guests ______ offered them drinks.

	(A)	and
	(B)	while
	(C)	until
	(D)	as Answers 1B 2B 3C 4B 5A 6C 7B 8D 9D 10A source : http://www.englishclub.com/grammar/conjunctions.htm http://www.englishdaily626.com/conjunctions.php?001