Sentence transformation exercise

Convert the following simple sentences into complex sentences each containing an adverb clause.

Adverb clauses are usually introduced by subordinating conjunctions like if, when, unless, while, as, because, since, that, so that etc. Adverb clauses usually indicate ideas such as time, place, manner, frequency, cause, effect etc.

1. He was absent due to his illness.

2. It is too late to start a new lesson.

3. In spite of the bad weather, we went out.

4. The weather being rough, they cancelled the voyage.

5. He was punished on account of his negligence.

6. He is too lazy to succeed.

7. In spite of being well-meaning, she is unpopular.

8. In case of fire, break glass.

9. She failed the exam, in spite of working very hard.


1. He was absent because he was ill. (Adverb clause of reason)

2. It is so late that we cannot start a new lesson. (Adverb clause of reason or effect)

3. Though the weather was bad, we went out. (Adverb clause of concession or contrast)

4. As the weather was rough, they cancelled the voyage. (Adverb clause of cause)

5. He was punished because he was negligent. (Adverb clause of reason)

6. He is so lazy that he cannot succeed.

7. Though she is well-meaning, she is unpopular.

8. If there is fire, break glass. (Adverb clause of condition)

9. Although she worked very hard, she failed her exam.