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Parallel Lists
Writing Parallel Lists
In a parallel list, all the list items start with the same type of word. The term "parallel list" is most commonly used in relation to bullet points, but it also applies to lists written out as sentences and also with terms such as "either/or" and "neither/nor" (called correlative conjunctions).Example of a Parallel List with Bullet Points
Here is an example of a parallel list with bullet points: The list above is parallel because all the list items start with a verb that gives an order (i.e., an imperative verb). Here is a similar example with a non-parallel list: The list above has been marked as wrong because it is non-parallel. A non-parallel structure does not always create a grammar error (as in this case), but we have marked it as wrong because it is not as slick or as clear as the parallel version. You should strive to keep your lists parallel.
Examples of Parallel Lists in Normal Texts
Each of these examples has a parallel list:- I would advise visitors to avoid bathing in the river, driving in the town, and eating in the local tapas bar.
- Our mouthwash helps to fight plaque, tooth decay, and bad breath.
- Please do not light fires, damage trees, or leave litter.
- I would advise visitors to avoid bathing in the river, driving in the town, and the local tapas bar.
- Our mouthwash helps to fight plaque, tooth decay, and freshens breath.
- Please do not light fires, damage trees, and take your litter home.
Example of a Parallel Structure with a Correlative Conjunction
Correlative conjunctions are used in pairs to link equivalent elements in a sentence. Common examples are "either/or," "neither/nor," and "not only/but also."Here is an example of a parallel structure with a correlative conjunction:
- He must either sell his watch or apply for a loan.
- He must sell either his watch or apply for a loan.
Advantages of Parallel Lists
Here are four advantages of parallel lists:(1) Parallel lists are easier to read because, after reading the first list item, readers anticipate the grammatical structure of the following list items.
(2) Parallel lists are less likely to include logic flaws with the list introduction.
(3) Parallel lists will portray you as a clear thinker.
(4) Parallel lists are often easier to write because the text structure has already been established, leaving writers with only the words to find.
Disadvantages of Parallel Lists
Here is a disadvantage of a parallel list:(1) Parallel lists can sometimes be difficult to write because the information in at least one list item does not easily fit into the chosen structure.
(When this happens, you should endeavour to find the right words or switch to a structure that fits every list item.)
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