Word Formation – English Grammar Exercises for B1
You are writing a1-star review to warn others about a terrible pair of headphones. Choose the best option (A, B, C, or D) to complete each sentence.
1 “Do not buy these headphones! They stopped working after one day and are completely ______.”
(A) use
(B) uselessly
(C) useful
(D) useless
2 “I spent $20 on this product, but honestly, it is absolutely ______.”
(A) worth
(B) worthless
(C) worthy
(D) worthlessly
3 “Right out of the box, the left speaker was ______ and produced no sound.”
(A) faulty
(B) fault
(C) faultless
(D) faultily
4 “The advertisement claimed these were ______ Bluetooth headphones, but they actually came with a permanent, fixed cable!”
(A) wire
(B) wired
(C) wireless
(D) wirelessly
5 “Trying to contact their customer service for a refund is ______ because they never reply.”
(A) point
(B) pointlessly
(C) pointed
(D) pointless
6 “I spent an ______ amount of time trying to pair them with my smartphone, but it never worked.”
(A) end
(B) endless
(C) endlessly
(D) ending
7 “Instead of delivering clear music, all I heard was a constant, ______ scratching sound.”
(A) noiseless
(B) noisy
(C) noise
(D) noisily
8 “The plastic ear cups are so hard that wearing them for more than ten minutes becomes highly ______.”
(A) pain
(B) painless
(C) painful
(D) painfully
9 “They feel incredibly cheap and almost ______, like empty plastic shells with nothing inside.”
(A) weight
(B) weighty
(C) weightless
(D) weightlessly
10 “The box arrived crushed and torn, which shows how ______ the manufacturer is about packaging.”
(A) careless
(B) care
(C) careful
(D) carelessly
11 “I felt completely ______ when the headphones started sparking and smoking while charging.”
(A) help
(B) helpful
(C) helpless
(D) helplessly
12 “Hoping to get any technical support from this shady company is a ______ situation.”
(A) hopeless
(B) hope
(C) hopeful
(D) hopelessly
13 “The headband has absolutely no padding, making the device very ______ to wear.”
(A) comfortable
(B) comfort
(C) uncomfortably
(D) uncomfortable
14 “Trust me, buying anything from this unknown brand is a highly ______ decision.”
(A) risk
(B) risky
(C) riskless
(D) riskily
15 “The instruction manual was translated so poorly that the sentences were entirely ______.”
(A) meaning
(B) meaningful
(C) meaningless
(D) meaninglessly
16 “My attempts to fix the broken audio jack were completely ______.”
(A) success
(B) successful
(C) unsuccessfully
(D) unsuccessful
17 “The terrible build quality of this product left me absolutely ______!”
(A) speech
(B) speechless
(C) speaking
(D) speechlessly
18 “The design is definitely not ______; it is full of sharp edges and factory errors.”
(A) flaw
(B) flawed
(C) flawless
(D) flawlessly
19 “Opening the package and realizing I had been scammed was a very ______ experience.”
(A) joy
(B) joyful
(C) joyless
(D) joylessly
20 “The Bluetooth connection drops every single minute, which is incredibly ______ when you are trying to listen to a podcast.”
(A) stress
(B) stressful
(C) stressless
(D) stressfully
ANSWER KEY & EXPLANATIONS
1 (D) useless
- Why it is correct (The Key): The linking verb “are” requires an adjective. Use (noun) + -less (without) = useless (having no ability or skill to help/work).
- Distractor Analysis: (A) Structural Error: Noun. (B) Common Mistake: Adverb. (C) Strong Distractor: Useful has the exact opposite meaning.
2 (B) worthless
- Why it is correct (The Key): Adjective required to modify the pronoun “it”. Worth + -less = worthless (having no value or use).
- Distractor Analysis: (A) Structural Error: Noun. (C) Strong Distractor: Worthy means having value, which contradicts the 1-star rating. (D) Common Mistake: Adverb.
3 (A) faulty
- Why it is correct (The Key): Fault (noun) + -y = faulty (defective/broken).
- Distractor Analysis: (B) Structural Error: Noun. (C) Strong Distractor: Faultless means perfect, which contradicts the complaint. (D) Common Mistake: Adverb.
4 (C) wireless
- Why it is correct (The Key): Wire + -less = wireless (operating without cables).
- Distractor Analysis: (A) Structural Error: Noun. (B) Strong Distractor: Wired means it has a cable, but the reviewer is complaining that it claimed to be wireless. (D) Common Mistake: Adverb.
5 (D) pointless
- Why it is correct (The Key): Point + -less = pointless (having no meaning or purpose).
- Distractor Analysis: (A) Structural Error: Noun. (B) Common Mistake: Adverb. (C) Strong Distractor: Pointed means having a sharp end or being direct.
6 (B) endless
- Why it is correct (The Key): Modifying the noun “amount”. End + -less = endless (infinite, taking too long).
- Distractor Analysis: (A) Structural Error: Noun. (C) Common Mistake: Adverb. (D) Strong Distractor: Present participle/noun.
7 (B) noisy
- Why it is correct (The Key): Modifying the noun “sound”. Noise + -y = noisy (making a lot of bad/loud sound).
- Distractor Analysis: (A) Strong Distractor: Noiseless means silent, contradicting the “scratching sound”. (C) Structural Error: Noun. (D) Common Mistake: Adverb.
8 (C) painful
- Why it is correct (The Key): Pain + -ful = painful (causing physical pain).
- Distractor Analysis: (A) Structural Error: Noun. (B) Strong Distractor: Painless means causing no pain. (D) Common Mistake: Adverb.
9 (C) weightless
- Why it is correct (The Key): Weight + -less = weightless (having no weight, feeling extremely light and cheap).
- Distractor Analysis: (A) Structural Error: Noun. (B) Strong Distractor: Weighty means heavy, contradicting the “empty plastic” description. (D) Common Mistake: Adverb.
10 (A) careless
- Why it is correct (The Key): Care + -less = careless (not giving enough attention or thought).
- Distractor Analysis: (B) Structural Error: Noun. (C) Strong Distractor: Careful is a positive trait, contradicting the “crushed” box. (D) Common Mistake: Adverb.
11 (C) helpless
- Why it is correct (The Key): “Felt” is a linking verb requiring an adjective. Help + -less = helpless (unable to defend oneself).
- Distractor Analysis: (A) Structural Error: Noun. (B) Strong Distractor: Helpful is positive. (D) Common Mistake: Adverb.
12 (A) hopeless
- Why it is correct (The Key): Modifying “situation”. Hope + -less = hopeless (impossible to resolve or succeed).
- Distractor Analysis: (B) Structural Error: Noun. (C) Strong Distractor: Hopeful means full of hope. (D) Common Mistake: Adverb.
13 (D) uncomfortable
- Why it is correct (The Key): Adding the negative prefix un- to comfortable. Meaning: causing physical discomfort.
- Distractor Analysis: (A) Strong Distractor: Comfortable contradicts the lack of padding. (B) Structural Error: Noun. (C) Common Mistake: Adverb.
14 (B) risky
- Why it is correct (The Key): Risk + -y = risky (full of the possibility of danger or failure).
- Distractor Analysis: (A) Structural Error: Noun. (C) Strong Distractor: Riskless means safe. (D) Common Mistake: Adverb.
15 (C) meaningless
- Why it is correct (The Key): Meaning + -less = meaningless (making no sense).
- Distractor Analysis: (A) Structural Error: Noun. (B) Strong Distractor: Meaningful is positive. (D) Common Mistake: Adverb.
16 (D) unsuccessful
- Why it is correct (The Key): Negative prefix un- + success + -ful = unsuccessful (failing to achieve a goal).
- Distractor Analysis: (A) Structural Error: Noun. (B) Strong Distractor: Successful contradicts the context of a 1-star review. (C) Common Mistake: Adverb.
17 (B) speechless
- Why it is correct (The Key): Speech + -less = speechless (unable to speak due to anger or shock).
- Distractor Analysis: (A) Structural Error: Noun. (C) Strong Distractor: Participle/Gerund. (D) Common Mistake: Adverb.
18 (C) flawless
- Why it is correct (The Key): The sentence uses a negative (“is definitely not”). Flaw (error) + -less = flawless (perfect). “Not flawless” means it has errors.
- Distractor Analysis: (A) Structural Error: Noun. (B) Strong Distractor: Flawed means having errors. If we said “not flawed,” we would mean it is perfect, which is wrong here. (D) Common Mistake: Adverb.
19 (C) joyless
- Why it is correct (The Key): Joy + -less = joyless (bringing no happiness).
- Distractor Analysis: (A) Structural Error: Noun. (B) Strong Distractor: Joyful means happy. (D) Common Mistake: Adverb.
20 (B) stressful
- Why it is correct (The Key): Stress + -ful = stressful (causing mental or emotional tension).
- Distractor Analysis: (A) Structural Error: Noun. (C) Strong Distractor: Stressless means relaxing. (D) Common Mistake: Adverb.
GRAMMAR POINTS TO REMEMBER
1 The Power of the “-less” Suffix in Reviews
When writing a critique or a negative review, using adjectives with the -less suffix is highly effective. It immediately communicates that the product is lacking a fundamental requirement.
- Use → Useless (It lacks utility; it cannot be used).
- Worth → Worthless (It lacks value; it is a waste of money).
- Point → Pointless (It lacks purpose).
2 Contrast with “-ful”
Many nouns can take both -less and -ful to create opposite adjectives. In a 1-star review, you must carefully select the negative state.
- Helpful (Good customer service) $\leftrightarrow$ Helpless (Feeling stuck/scammed).
- Meaningful (A good manual) $\leftrightarrow$ Meaningless (A badly translated manual).
- Exception: Painful (causing pain) and Stressful (causing stress) are negative traits formed with -ful, while Painless and Stressless are positive!
3 Syntactic Position (Where to place these adjectives)
Adjectives formed from nouns function exactly like normal adjectives. They are primarily placed:
- After linking verbs (be, feel, look, seem, become):
- Example: The headphones are useless. I felt helpless.
- Before nouns:
- Example: It was a pointless attempt. It was a joyless experience.
4 The Adverb Trap (-ly)
Always ensure you do not select the adverb form (e.g., uselessly, carelessly) when you need to modify a noun or follow a linking verb.
- Incorrect: The product is completely uselessly.
- Correct: The product is completely useless.