Type 1: Coordinating Conjunctions
The first type, coordinating conjunctions, have slightly different meanings and are used to join words, phrases and clauses of equal importance. Though there are only seven such conjunctions to learn, the mnemonic ‘FANBOYS’ may still help:
FOR – used to offer explanation, reason, purpose and rationale
‘The experiment will not be a failure, for the variables have been carefully checked.’
AND – used to join together two non-contrasting items or ideas
‘Air pollution is increasing globally, and health conditions are increasing too.’
NOR – used to join together two non-contrasting negative items or ideas
‘Governments are not investing enough, nor are they publicising the issue sufficiently.’
BUT – used to show exception or contrast
‘Numerous studies have been conducted into this issue, but none of them have been conclusive.’
OR – used to present a choice or an alternative idea
‘Governments can either invest more money into it, or the rates can continue to increase.’
YET – used to present an exception or contrast to a previous idea
‘Governments continue to invest millions into the issue, yet there is little improvement.’
SO – used to offer a consequence, an effect or a result
‘The experiment was conducted three times so the results could be confirmed.’
What you may have noticed in these examples is that the clauses which have been joined with coordinating conjunctions and commas (,) are independent in type. As we will see with Type 3, independent clauses can be distinguished from dependent clauses in that they are able to form grammatical sentences when expressed alone.
Type 2: Correlative Conjunctions
Like coordinating conjunctions, correlatives join words, phrases and clauses which are of equal important in an expression. How they differ, however, is that correlative conjunctions are formed of word or phrase pairs, such as in the table below: