形容词在句中通常用于修饰名词，赋予名词具体的特征。它们可以在原词基础上加前缀或后缀，也可以通过不规则变化形成。不同类型的形容词具有不同的规则，而本练习将通过填空题的形式，帮助学习者理解和记忆这些规则。让我们开始下面的练习，进一步提高英语形容词的运用能力吧。
练习一：词尾变化形成形容词
The weather is absolutely *freezing* (temperature) outside, you should wear something warm.
She passed her driving test on the first try because her preparation was very *thorough* (complete).
My brother is the most *careful* (care) driver I know, he always follows the traffic rules.
This novel is quite *interesting* (interest) because the plot has many unexpected twists.
Our vacation was *wonderful* (wonder) as we enjoyed the beautiful scenes of the mountains.
His argument was *convincing* (convince) enough to change her mind about the topic.
This area is known for its *peaceful* (peace) environment and friendly locals.
The old man gave us some *wise* (wisdom) advice about life and happiness.
The children were *playful* (play) and energetic throughout the day.
I need to buy some *comfortable* (comfort) shoes for my long walks.
The colors of the sunset were truly *breathtaking* (breath) and magnificent.
He is a very *successful* (success) entrepreneur with several profitable businesses.
The instructions were *helpful* (help) in assembling the new furniture.
The movie was *disappointing* (disappoint) because it didn’t live up to my expectations.
Their team is extremely *skillful* (skill) at soccer and won the championship last year.
练习二：前缀变化形成形容词
The little girl was *unhappy* (not happy) because she lost her favorite toy.
His behavior is often *irrational* (not rational), which makes it hard to predict.
It’s important to eat *healthy* (health) foods to maintain your well-being.
The road was *impassable* (not passable) after the heavy snowstorm last night.
She is very *independent* (not dependent) and likes to do things on her own.
Many people are *unaware* (not aware) of the importance of recycling.
The job interview was *informal* (not formal), so I wore casual clothes.
His generous donation was an *unselfish* (not selfish) act of kindness.
The water in this lake is *drinkable* (able to be drunk) because it is clean and unpolluted.
The results of the experiment were *inconclusive* (not conclusive) and required further research.
She showed an *incredible* (not credible) amount of strength during the competition.
After the car accident, he felt *invulnerable* (not vulnerable) and took more risks.
The rumor turned out to be *unfounded* (not founded) as there was no evidence to support it.
For the safety of the passengers, the bridge was declared *unstable* (not stable) and closed temporarily.
His sudden change in behavior is completely *unexplainable* (not explainable) to me.
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