Great question!
Parallel structure is when you use the same way of describing several things in a list. By using the same grammatical structure you improve the flow, clarity, and readability of your sentence. To correct non-paralell sentences you must using the same pattern of words to express each idea equally. It may help to write each idea as a point on a list to check if they can be grouped together. Look for patterns such as common suffixes, for example, words ending in “-ing” or “ly.”
- We never learn the Doctor's name, but we know about his ship, his home planet, and regenerating.
- We never learn the Doctor’s name, but we know about his ship, home planet, and regeneration.
- Daleks are known for shouting, "We obey!’’ and what they also shriek is "Exterminate!"
- Daleks are known for shouting “We obey!” and “Exterminate!”
- Of all the villains on Doctor Who, the Daleks are the deadliest, have the most cruelty, and the most popular.
- Of all the villains on Doctor Who, the Daleks are the most deadly, cruel, and popular.
- Since 1963, the Doctor Who, has had many adventures in space, has travelled to save the past and the future, and wears a bow tie.
- Since 1963 Doctor Who has had many adventures in space, travelled to save the past and the future, and wears a bow tie.
- Generally, Daleks have three attachments: one for firing death rays; one to see, and one that lets them manipulate objects.
- Generally Daleks have three attachments: one to fire death rays, one to see, and one to manipulate objects.