This document introduces common occupations including worker, doctor, nurse, engineer, farmer, and teacher. For each occupation, it provides the article and name of the occupation, followed by a sentence describing that occupation using the adjective "busy" or "happy". The purpose is to teach basic vocabulary about different jobs and occupations.

1. Vocabulary Teaching

2. - preview workerdoctornurseengineerfarmerteacher

3. a worker． a busy workerHe is a busy worker.

4. a doctor． a happy docterShe is a happy doctor.

5. an nurse． a busy nurseHe is a busy nurse.

6. an engineer．a busy engineerHe is a busy engineer.

7. a farmer． a happy farmerHe is a happy farmer.

8. a teacher． a happy teacherHe is a happy teacher.