C1. Her phone is different from mine

Different from: khác biệt

C2. I think jazz music isn't  as popular as rock music

Kiểu câu as.....as

C3- Are you interested in seeing a water pupet show?

interested in+ V-ing: thích làm gì đó

C4- I haven't talked to David since Christmas

Thì HTHT ở dạng phủ định: S + have/has +not + V-ed/pt3

C5- Minh is the most intelligent in my class

Câu so sánh nhất: the most + adj

C6- Jim's brother plays more better than Jim

Câu só sánh hơn: More + adj-er

$\textit{ 1. Her phone is different from mine}$
      Công thức: S + to be/linking verb + different from + O

$\textit{ 2. I think jazz music isn't as/ so popular as rock}$
    $\text{ Công thức so sánh bằng: S1 + tobe(not)/V + as + adj/adv + as + S2}$

$\textit{ 3.Are you interesting in seeing a water puppet show?}$

    $\text{ Vì : like = interesting in : thích}$

$\textit{ 4. I haven't spoken to David was at Christmas before.}$
   $\text{ Công thức: This is the fist time + S + Ved/PII }$
                              $\text{ => S + have/has + not + Ved/PII + … before}$

$\textit{ 5. Minh is the most intelligent in my class.}$
  $\text{ Công thức: so sánh nhất( vs tính từ/ trạng từ dài) S + tobe/V + the + most + adj/adv +…}$

$\textit{ 6. Jim's brother plays the saxophone better than Jim}$
   $\text{ công thức: so sánh hơn ( vs tính từ, trạng từ ngắn) : S + tobe/V + adj/adv-er + than + S2}$