5. The more science books she reads, the more knowledge she will have.
So sánh kép: The + more + S2 + V2, the + more + S2 + V2.

6. The more easily Kien wants to pass the exam, the harder she will study.
Dạng mở rộng của câu trên: The + adj 1(so sánh hơn) + S2 + V2, the + adj 2(so sánh hơn) + S2 + V2.

7. The more beautiful the house (is), the more expensive it (is).
Nếu V của cả 2 vế đều là "is" thì có thể rút gọn.
Cấu trúc như câu 5.

5 the more science books she reads, the more knowledge she will have

-> cấu trúc : the more + N + + N + s + V +  the more + S + V 

6 the more easily to pass the exam that he should study harder

-> the more easily + to V + N + that + S + should + V nguyên mẫu 

7 the more beautiful this house is, the more expensive it is.

-> the more + adj / adv + S + V + the more + adj / adv + S