Quick vs Quickly: Adjective or Adverb
This drill trains you to decide whether the blank describes a noun or the subject after a linking verb, or explains how an action, process or change happens. Find the grammar anchor before choosing.
Action, process or change = quickly
Choose quick
Use quick as an adjective. It can appear before a noun, as in a quick response, or after a linking verb such as be, seem, remain or prove, where it describes the subject.
Choose quickly
Use quickly as an adverb when the blank explains how an active or passive action happens. Common patterns include respond quickly, changed quickly and was processed quickly.
How to find the anchor
Do not choose from the general meaning “fast.” First identify the grammatical job of the blank.
The response from the reservations team was ___ and accurate.
Answer: quickThe response from the reservations team was is the anchor. Was is a linking verb, so the blank describes the subject response. The adjective quick is required.
The help-desk staff responded ___ to the password request.
Answer: quicklyresponded is the anchor. The blank explains how the staff responded, so the verb needs the adverb quickly.
In informal speech, you may sometimes hear flat-adverb forms such as run quick. This drill follows standard written business English, where an action is described with quickly. Also remember that not every verb automatically takes an adverb: linking verbs take quick when the word describes the subject.
What your result reveals
Your score shows whether you recognised when the blank described a noun or linked subject, or modified an action, process or change. Use the Review to identify the exact grammar anchor before choosing between quick and quickly.
If quick caused problems
Review sentences where the blank describes a noun or the subject after a linking verb. Look for patterns such as a quick response, the reply was quick, the process seemed quick, or the repair proved quick.
If quickly caused problems
Review sentences where the blank explains how an active or passive action happens. Look for verb phrases such as responded quickly, changed quickly, was processed quickly, or could be completed quickly.
If false anchors or timing caused problems
You may be reacting to the general idea of speed without checking the grammatical job of the blank. First locate the noun, linking verb, active verb or passive verb phrase. Then decide whether the sentence needs an adjective or an adverb.
Use the Review in this order: check the correct answer, locate the exact anchor, read why that anchor controls the word form, then compare the reusable pattern. Do not use the shortcut quick = thing and quickly = verb. Linking verbs such as be, seem, remain and prove take quick when the word describes the subject.