I. Cấu trúc: 1. N + V + Số từ ... => It/She/... + be + (a/an) + Số từ-N+ N tt kép 2. Tính từ kép đặt trước N. II. Lưu ý: - Ở dạng 1, khi chủ ngữ là ''It/She...'' thì tính từ kép phải là dạng ''số từ-N'' VD: three-dogs, two- cats. 2-cats hay three-dogs là cách viết sai. - Ở dạng 2, cũng viết tính từ kép dưới dạng như trên. III. Bài tập: 1. The book has 100 pages => 2. I bought a book from a bookshop. It has 100 pages. => 3. The boy is drawing a monster. It has 4 eyes. => 4. The monster has 5 legs. => 5. The table has 3 legs. => 6. The dog is very intelligent. It has 3 eyes. => 7. The woman is 60 years old. => 8. The child is very clever. He is 5 years old. => 9. I like driving a car. It has 3 engines. => 10. The police is looking for a boy. He is 10 years old. =>
IV. Đáp án: 1. It is a one hundred - pages book. 2. I bought a one hundred-pages book from a book shop. 3. The boy is drawing a four-eyes monster. 4. It is a five-legs monster. 5. It is a three-legs table. 6. The three-eyes dog is very intelligent. 7. She is a sixty-year old woman. 8. The five-year old child is very clever. 9. I like driving a three-engines car. 10. The police is looking for a ten-year old boy.