1. She has moved to London for 20 years.

       Công thức : 1 câu có "ago" và sử dụng quá khứ đơn -> quá khứ hoàn thành với cả "ago" -> for ...

 2.The higher the sun is, the shorter the shadow is.

       Công thức : The more adj..., the more adj.... hay The adj-er..., The adj-er...   

 3. He paper mill doesn't put out as few products as it did two years ago. 

       Few: 1 vài

 4. The woman was knocked down by the car in the street.

 5. Electric lights had been invented before I was born.

      Cấu trúc câu bị động: S + V + O -> S'(O đầu) + V(được chia) + by O'(S đầu)

6. William told me that he would ask Mr.Wilson about that lesson the next day.

      Cấu trúc câu trực tiếp, gián tiếp: bạn lên mạng xem thử công thức nhé

7. I wish I had to pracrice the piano every day.

      Cấu trúc với từ "wish" : Sb + wish + would/ V-ed + O

                       Chúc bạn học giỏi! Vote 5 sao và hay nhất cho mình nhé :)

1. She has moved to London for 20 years.

- S + (last) + V2/ed + khoảng thời gian + ago

-> S + have/has + V3/ed + for + khoảng thời gian

2. The higher the sun is, the shorter the shadow is.

- Cấu trúc càng càng: The + adj + -er + S1 + V1, the + adj + -er + S2 + V2

3. The paper mill doesn't put out as few products as it did two years ago. 

- So sánh bằng: Với danh từ: S1 + V + as + much/many/little/few + N + as + S2

4. The woman was knocked down in the street by the car.

- Bị động: QKĐ: S + was/were + V3/ed + (by O)

5. Electric lights had been invented before I was born.

- Bị động: QKHT: S + had + been + V3/ed + (by O)

6. William told me that he would ask Mr. Wilson about that lesson the next day.

- Câu gián tiếp: Câu kể: S + said/ said to sb/ told sb + (that) + S + V(lùi thì)

- Lùi thì của động từ khuyết thiếu: will -> would

- Đổi trạng từ chỉ nơi chốn: this -> that

7. I wish I didn't have to practice the piano every day.

- Câu ước ở hiện tại: (-) S + wish(es) + (that) + S + didn't + V(bare)