64. Double Conjunctions (“either … or …” etc)



English has a number of conjunction pairs like “either … or …”, but lacks some of the ones found in other languages



Conjunctions are one of various means by which two English verbs can be placed in the same sentence (see 30. When to Write a Full Stop). They express a meaning relation (cause, result, addition etc.) between the statements containing the linked verbs (see 174. Eight Things to Know about Conjunctions). They can always be positioned between the two statements, and in many cases they can alternatively go before (see 25. Conjunction Positioning).

Posts on various individual conjunctions can be found elsewhere within this blog by clicking on “Conjunctions” in the CATEGORIES menu to the right of this page. Here, I wish to examine conjunctions that have a typical partner word placed before the other verb in the sentence, such as either … or … :

(a) EITHER the sun is sending out more heat OR the earth is losing less.

In many cases, conjunctions like this can drop one of the verbs because it is repetitive (see 36. Words Left Out to Avoid Repetition), leaving a sentence with a list (see 54. Sentence Lists 1: Incidental):

(b) EITHER dollars (can be used for payment) OR pounds can be used for payment.

The main double conjunctions that can make a list like this are:

both … and … (simple list)

not only … but also … (simple list)

either … or … (two alternatives)

neither … nor … (list of negative meanings)

whether … or … (see 99. When to Use “whether … or …”)

as … as … (similar quality)

There are also some double conjunctions whose verbs are not usually left out, so that there is no association with listing:

if … then … (see 118. Problems with Conditional “if”)

(just) as … so … (see 149. Saying How Things are Similar)

so … that … (see 32. Expressing Consequences)

no sooner … than … (event – immediate result)

The following sections discuss some problems that double conjunctions can cause, and highlight a combination that is not commonly mentioned.



1. Combinations that are logical but not used in English

Some languages allow combinations that are not usually found in English. A common one is *although … but … . In most cases English just uses although by itself, sometimes pairing it with yet or nevertheless for emphasis (see 125. Stress and Emphasis).

It is not normal to use when with any partner word. In particular, the word then is not possible: there is an especial temptation to use it among speakers of languages with the same word for both if and when, such as Dutch (see 118. Problems with Conditional “if”). The combination where(ever) … there … is similarly rare – it was probably commoner in the past than now. Modern English again often has the first word by itself, like this:

(c) WHERE the mountains are fertile, cultivation is heavy.

If there is some repetition in the second half, there is a tendency to add also or too:

(d) WHEREVER mosquitoes are found, malaria is found (exists) TOO.

Another unlikely combination is *since … hence … (or *because … therefore …). Again since or because by itself is sufficient (for the difference between them, see 61. “Since” versus “Because”).

Finally, one cannot say *or … or … . Although some other languages allow the same word just to be repeated to express the meaning of either … or … , English requires these two different words.


2. Combinations that cannot begin a sentence

The combination both … and … can be used with either one or two verbs, like this (verbs underlined):

(e) BOTH cigarettes AND cigars are harmful to health.

(f) Cigarettes BOTH cost a great deal AND are harmful to health.

Only in (e), with the single verb are, is it possible to place both at the start of the sentence. When both has its own verb – cost in (f) – it must be placed directly before that verb, after the subject. One other combination that behaves like this is neither … nor … .


3. Combinations that generate special word order

An elementary rule states that English sentences usually have no verb directly before the subject unless a question is being asked. A more advanced rule is that sentences beginning with a negative also need a verb before their subject. Two of the combinations listed above are associated with this second rule: not only … but also … and no sooner … than … . Here is an example:

(g) NO SOONER had Caesar conquered the Britons THAN he needed to return to Rome. (not *… Caesar had … )

The neither … nor … combination is also negative, but, as stated above, it cannot start a sentence when neither has its own verb, so it cannot affect word order1. On the other hand, the so … that combination is not negative but, if so begins the sentence, it too needs a verb before the subject:

(h) SO hard must athletes train THAT many give up.

Another aspect of word order is involved when two linked phrases begin with the same preposition. The preposition usually needs to be mentioned only once, like this:

(i) Success is possible through EITHER hard work OR basic ability.

Here through is clearly understood to combine with both of the linked nouns. It could also be placed after either. The same freedom applies to both, not only and neither. However, it does not apply to whether. This word must go before a preposition unless the preposition is part of a “prepositional” verb like DEPEND ON (see 44. Troublesome Prepositional Verbs). Thus, in sentence (i) we would have to say whether through, not *through whether.


4. Variable Meanings of “whether/if … or …”

This combination – unusual in that it can only ever span part of a sentence – has at least three different uses: in indirect questions, as a kind of opposite of if, and as a substitute for either … or … . These uses are examined in detail in the post 99. When to Use “whether … or …” .



One combination is not commonly mentioned in grammar books: a negative equivalent of not only … but also … . Before looking at it, there is a need to analyse exactly what not only … but also … does. Consider again sentence (e):

(e) BOTH cigarettes AND cigars are harmful to health.

This statement is equally about cigarettes and cigars, saying something about each that the reader is assumed not to know already. The presence of both also gives an early indication that a list of two items is being given (see 55. Sentence Lists 2). However, if we replaced both … and … with not only … but also …, the sentence would be primarily about just cigars. It would mean “I know you know that cigarettes are harmful, but I am telling you that cigars are too”. In other words, it would be suggesting that the part after not only was already familiar to the reader – a surprisingly common need in language (see 156. Mentioning What the Reader Knows Already).

The negative equivalent of both … and … is widely acknowledged to be neither … nor … . But what is the negative of of not only … but also … ? The possibility I wish to highlight is not … any more than … , like this:

(j) Governments do NOT often cut taxes, ANY MORE THAN they help the poor.

In this list of things that governments fail to do, the one assumed to be familiar to the reader is the second one, after any more than. We cannot usually put such familiar information first. Note also that other negative words than not are possible in the first half (hardly, rarely, scarcely, never, few, no, nobody, nothing etc). In (j), for example, we could replace do not often with rarely.


1Although neither combined with nor must go between a verb and its subject, nor can go before them both (verb first): Some people NEITHER want to eat healthily NOR will they take more exercise. The subject after nor in such cases is typically a pronoun (they), and can also be left out.


4 thoughts on “64. Double Conjunctions (“either … or …” etc)

  1. Thank you for your helpful reply.I am really very thankful to you as you explained the problem.Sir,I have a confusion belonging to infinitive and gerund using at the start of the sentence.What is the paraphrase or meaning of “Using a pronoun in the sentence”. Or “To use a pronoun in the sentence”. The main reason for confusion is that “to +verb”is also used for purposes at the start of the sentence.One important thing is what the meaning of infinitive is when it is used after “Be” verb as in ” The fact is to use a word like noun”.You have explained about using gerund after “Be” verb within one of the post in the blog,but not about infinitive after “Be” verb.One more question is that is any verb can be used as gerund instead of infinitive with to at the starting position of any sentence.Would you please describe it.Thank you.

    • Hi and thanks for your question. It actually involves quite a large area of grammar so is not easily explained in a note like this. An important point to appreciate is that infinitive verbs at the start of a sentence can act like either a noun, performing the role of subject (e.g. “TO ERR is human”), or an adverb, performing the role of adverbial (e.g. “TO CONTINUE, click here”). Only the second of these expresses purpose. The first is an alternative to the use of the gerund (“ERRING”). I am not sure when the infinitive is preferable to a gerund in this use, but I have suggested in the post 103. Sentences Starting with “It” that it often seems to sound a bit old-fashioned.

      The use of infinitives after BE is the topic of a post that I plan to write in the future.

  2. Sir,I appreciate your dedication to this blog that helps a number of people who have a little confusion in many different topics describing by you.Sir,I have a confusion in that when “that” is a conjunction or when a relative pronoun.For example,I say that I must go there.In this sentence,”that” is conjunction or relative pronoun.If not,please exemplify the other situation.Thank you very much.

    • Thanks for asking this. That is the kind of word that is the focus of the post 3. Multi-Use Words. It confuses others too, as can be seen from one of the comments on the Home page. One useful guideline is that the relative pronoun “that” can always be replaced by “who” or “which” or “whom”. Its other characteristics are the need for a noun or pronoun just before it (the conjunction use may also have one of these just before, but it can exist without them too); and the need to act like a noun in a sentence, i.e. as the subject, object or complement of a verb. In your example sentence that is a conjunction (note the presence of the verb say before it rather than a noun). It is a relative pronoun in The words THAT were spoken were untrue.

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