Writing and grammar guides

The rules behind the tools, explained with worked examples. Each guide answers one question directly, then shows you the tool that checks it for you.

Which sentence correctly uses parallel structure?
A sentence uses parallel structure correctly when every item in a list, pair or comparison takes the same grammatical form — all nouns, all -ing verbs, all full clauses. “She likes reading, writing and hiking” is parallel; “She likes reading, writing and to hike” is not, because the third item switches form.
Which sentence should be revised to reduce wordiness?
The sentence to revise is the one whose meaning survives intact when you delete words from it. “Due to the fact that it was raining, we made the decision to cancel” reduces to “Because it was raining, we cancelled” — same meaning, half the words. If a cut changes nothing, the words were not doing anything.
What is a compound sentence?
A compound sentence joins two or more independent clauses — each of which could stand alone as a sentence — using a comma plus a coordinating conjunction, a semicolon, or a colon. “The rain stopped, and we went outside” is compound: both halves are complete sentences.

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