Complete the sentences with one of the prefixed adjectives in Exercise C.

1. Both his parents died when he was young and he has very little money. He has had an unfortunate life.
2. He keeps changing his mind. He is very indecisive .
3. He refused to wait even five minutes. He is terribly impatient .
4. I couldn't do my Maths homework this week because it was so hard. It was impossible .
5. People don't like him very much. He is rather unpopular .
6. She is eighteen, but she acts like an eight-year-old. I think she is very immature .
7. She isn't like other people. She is a very unusual person.

Lesson 2

Now write the adjectives to complete these sentences. Then write the opposites of the adjectives.

2. Something which doesn't cause harm is harmless. harmful

3. Something which doesn't cause pain is painless. painful

4. Someone who has no power is powerless. powerful

5. Something which you can't use is useless. useful

6. Someone who never thinks is thoughtless. thoughtful

C. Make the opposites of theses adjectives. Use the prefixes un, in or im. Don't forget: we only use im before the letters m and p.

• un attractive
• in correct
• in decisive
• in dependent
• in expensive
• un fashionable
• in formal
• un fortunate
• un healthy
• un interesting
• im mature
• im moral
• im patient
• un pleasant
• im polite
• un popular
• im possible
• im practical
• in sensitive
• un usual

E. Complete the sentences with one of the prefixed adjectives in Exercise C.

1. Both his parents died when he was young and he has very little money. He has had an unfortunate life.
2. He keeps changing his mind. He is very indecisive.
3. He refused to wait even five minutes. He is terribly impatient.
4. I couldn't do my Maths homework this week because it was so hard. It was impossible.
5. People don't like him very much. He is rather unpopular.
6. She is eighteen, but she acts like an eight-year-old. I think she is very immature.
7. She isn't like other people. She is a very unusual person.