In grammar, a conjunction (abbreviated CONJ or CNJ) is a part of speech that connects words, phrases, or clauses that are called the conjuncts of the conjunctions. That definition may overlap with that of other parts of speech, and so what constitutes a "conjunction" must be defined for each language. In English, a given word may have several senses, and be either a preposition or a conjunction depending on the syntax of the sentence. For example, after is a preposition in "he left after the fight" but is a conjunction in "he left after they fought". In general, a conjunction is an invariable (non-inflected) grammatical particle that may or may not stand between the items conjoined.
The definition of conjunction may also be extended to idiomatic phrases that behave as a unit with the same function, e.g. "as well as", "provided that".
Separation of clauses edit
Commas are often used to separate clauses. In English, a comma is used to separate a dependent clause from the independent clause if the dependent clause comes first: After I fed the cat, I brushed my clothes. (Compare this with I brushed my clothes after I fed the cat.) A relative clause takes commas if it is non-restrictive, as in I cut down all the trees, which were over six feet tall. (Without the comma, this would mean that only the trees more than six feet tall were cut down.) Some style guides prescribe that two independent clauses joined by a coordinating conjunction (for, and, nor, but, or, yet, so) must be separated by a comma placed before the conjunction. In the following sentences, where the second clause is independent (because it can stand alone as a sentence), the comma is considered by those guides to be necessary:
- Mary walked to the party, but she was unable to walk home.
- Designer clothes are silly, and I can't afford them anyway.
- Don't push that button, or twelve tons of high explosives will go off right under our feet!
In the following sentences, where the second half of the sentence is not an independent clause (because it does not contain an explicit subject), those guides prescribe that the comma be omitted:
- Mary walked to the party but was unable to walk home.
- I think designer clothes are silly and can't afford them anyway.
- Sit down and shut up.
- She had very little to live on, but she would never have dreamed of taking what was not hers.
A comma between clauses may change the connotation, reducing or eliminating ambiguity. In the following examples, the thing in the first sentence that is very relaxing is the cool day, whereas in the second sentence it is the walk, since the introduction of commas makes "on a cool day" parenthetical:
- They took a walk on a cool day that was very relaxing.
- They took a walk, on a cool day, that was very relaxing.
If another prepositional phrase is introduced, ambiguity increases, but when commas separate each clause and phrase, the restrictive clause can remain a modifier of the walk:
- They took a walk in the park on a cool day that was very relaxing.
- They took a walk, in the park, on a cool day, that was very relaxing.
In some languages, such as German and Polish, stricter rules apply on comma use between clauses, with dependent clauses always being set off with commas, and commas being generally proscribed before certain coordinating conjunctions.
The joining of two independent sentences with a comma and no conjunction (as in "It is nearly half past five, we cannot reach town before dark.") is known as a comma splice and is sometimes considered an error in English; in most cases a semicolon should be used instead. A comma splice should not be confused, though, with the literary device called asyndeton, in which coordinating conjunctions are purposely omitted for a specific stylistic effect.
Beginning in the 17th century, an element of a conjunction was known as a conjunct. A conjunction itself was then called a connective. That archaic term, however, diminished in usage during the early 20th century. In its place, the terms coordinating conjunction (coined in the mid-19th century) and correlative conjunction (coined in the early 19th century) became more commonly used.
Coordinating conjunctions edit
Coordinating conjunctions, also called coordinators, are conjunctions that join, or coordinate, two or more items (such as words, main clauses, or sentences) of equal syntactic importance. In English, the mnemonic acronym FANBOYS can be used to remember the most commonly used coordinators: for, and, nor, but, or, yet, and so. These are not the only coordinating conjunctions; various others are used, including: "and nor" (British), "but nor" (British), "neither" ("They don't gamble, neither do they smoke"), "no more" ("They don't gamble, no more do they smoke"), and "only" ("I would go, only I don't have time").: ch. 9 : p. 171 Types of coordinating conjunctions include cumulative conjunctions, adversative conjunctions, alternative conjunctions, and illative conjunctions.
Here are some examples of coordinating conjunctions in English and what they do:
- For – an illative (i.e. inferential), presents rationale ("They do not gamble or smoke, for they are ascetics.")
- And – a cumulative, adds non-contrasting items or ideas ("They gamble, and they smoke.")
- Nor – presents an alternative non-contrasting (also negative) idea ("They do not gamble, nor do they smoke.")
- But – an adversative, presents a contrast or exception ("They gamble, but they don't smoke.")
- Or – presents an alternative non-contrasting item or idea ("Every day they gamble, or they smoke.")
- Yet – an adversative, presents a strong contrast or exception ("They gamble, yet they don't smoke.")
- So – an illative (i.e. inferential), presents a consequence ("He gambled well last night, so he smoked a cigar to celebrate.")
Only and, or, nor are actual coordinating logical operators connecting atomic propositions or syntactic multiple units of the same type (subject, objects, predicative, attributive expressions, etc.) within a sentence. The cause and consequence (illative) conjunctions are pseudo-coordinators, being expressible as antecedent or consequent to logical implications or grammatically as subordinate conditional clauses.
Correlative conjunctions edit
Correlative conjunctions work in pairs to join words and groups of words of equal weight in a sentence. There are many different pairs of correlative conjunctions:
- not only...but (also)
- just as...so
- as much...as
- no sooner...than
- not...but rather
- You either do your work or prepare for a trip to the office. (Either do or prepare)
- He is not only handsome but also brilliant. (Not only A but also B)
- Neither the basketball team nor the football team is doing well.
- Both the cross country team and the swimming team are doing well.
- You must decide whether you stay or you go.
- Just as many Americans love basketball, so many Canadians love ice hockey.
- The more you practice dribbling, the better you will be at it.
- Football is as fast as hockey (is (fast)).
- Football is as much an addiction as it is a sport.
- No sooner did she learn to ski than the snow began to thaw.
- I would rather swim than surf.
- He donated money not to those in need, but rather to those who would benefit him.
Conjunctions of time edit
|after||We'll do that after you do this.|
|as long as||That's fine as long as you agree to our conditions.|
|as soon as||We'll get to that as soon as we finish this.|
|by the time||He had left by the time you arrived.|
|long before||We'll be gone long before you arrive.|
|now that||We can get going now that they have left.|
|once||We'll have less to worry about once the boss leaves.|
|since||We haven't been able to upload our work since the network went down.|
|till||Please hold on till the server reboots.|
|until||We are waiting until you send us the confirmation.|
|when||They can do what they want when they want.|
|whenever||There is a good chance of rain whenever there are clouds in the sky.|
|while||I really appreciate you waiting while I finish up.|
Subordinating conjunctions edit
Subordinating conjunctions, also called subordinators, are conjunctions that join an independent clause and a dependent clause, and also introduce adverb clauses. The most common subordinating conjunctions in the English language include after, although, as, as far as, as if, as long as, as soon as, as though, because, before, even if, even though, every time, if, in order that, since, so, so that, than, that, though, unless, until, when, whenever, where, whereas, wherever, and while.
Complementizers can be considered to be special subordinating conjunctions that introduce complement clauses: e.g. "I wonder whether he'll be late. I hope that he'll be on time". Some subordinating conjunctions, when used to introduce a phrase instead of a full clause, become prepositions with identical meanings.
The subordinating conjunction performs two important functions within a sentence: illustrating the importance of the independent clause and providing a transition between two ideas in the same sentence by indicating a time, place, or cause and therefore affecting the relationship between the clauses.
In many verb-final languages, subordinate clauses must precede the main clause on which they depend. The equivalents to the subordinating conjunctions of non-verb-final languages such as English are either
- clause-final conjunctions (e.g. in Japanese); or
- suffixes attached to the verb, and not separate words
Such languages often lack conjunctions as a part of speech, because:
- the form of the verb used is formally nominalised and cannot occur in an independent clause
- the clause-final conjunction or suffix attached to the verb is a marker of case and is also used in nouns to indicate certain functions. In this sense, the subordinate clauses of these languages have much in common with postpositional phrases.
In other West Germanic languages like German and Dutch, the word order after a subordinating conjunction is different from that in an independent clause, e.g. in Dutch want ('for') is coordinating, but omdat ('because') is subordinating. The clause after the coordinating conjunction has normal word order, but the clause after the subordinating conjunction has verb-final word order. Compare:
- Hij gaat naar huis, want hij is ziek. ('He goes home, for he is ill.')
- Hij gaat naar huis, omdat hij ziek is. ('He goes home because he is ill.')
Similarly, in German, denn ('for') is coordinating, but weil ('because') is subordinating:
- Er geht nach Hause, denn er ist krank. ('He goes home, for he is ill.')
- Er geht nach Hause, weil er krank ist. ('He goes home, because he is ill.')
Starting a sentence edit
It is now generally agreed that a sentence may begin with a coordinating conjunction like and, but, or yet. While some people consider this usage improper, Follett's Modern American Usage labels its prohibition a "supposed rule without foundation" and a "prejudice [that] lingers from a bygone time."
Some associate this belief with their early school days. One conjecture is that it results from young children's being taught to avoid simple sentences starting with and and are encouraged to use more complex structures with subordinating conjunctions. In the words of Bryan A. Garner, the "widespread belief ... that it is an error to begin a sentence with a conjunction such as and, but, or so has no historical or grammatical foundation", and good writers have frequently started sentences with conjunctions.
There is also a misleading guideline that a sentence should never begin with because. Because is a subordinating conjunction, and introduces a dependent clause. It may start a sentence when the main clause follows the dependent clause.
- "And now we have Facebook and Twitter and Wordpress and Tumblr and all those other platforms that take our daily doings and transform them into media."
- "So any modern editor who is not paranoid is a fool".
- "And strikes are protected globally, existing in many of the countries with labour laws outside the Wagner Act model."
In other languages edit
In Warlpiri, a Pama-Nyungan language spoken in Australia, conjunctions function differently from English or other Germanic languages. In unembedded contexts, Warlpiri uses the coordinator manu, such that P manu Q translates to "P and Q": Cecilia manu Gloriapala yanu tawunu kurra means "Cecilia and Gloria went to town", but in the negative contexts, P manu Q translates to "neither P nor Q", such that kularnangku yinyi rampaku manu loli means "I won't give you cookies or lollipops", as kularnanagku is a form of the Warlpiri negative marker.
See also edit
- Cohesion (linguistics)
- Conjunctive adverb
- Conjunctive mood, sometimes used with conjunctions
- Genitive connector
- Logical conjunction
- Logical disjunction
- Serial comma – the comma used immediately before a coordinating conjunction preceding the final item in a list of three or more items
- So (word)
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Do not join independent clauses by a comma.
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