`1,` I will be fifthteen next week.

- Thì tương lai đơn : S + will + V nguyên thể

- Tuần sau sẽ là sinh nhật thứ 15 của tôi `->` Tuần sau tôi sẽ 15 tuổi.

`2,` Hanh never uses plastic bags when going shopping.

- never (adv) không bao giờ

- detest doing sth : ghét làm gì

`3,` Is this her smartphone?

- belong to (phr v) thuộc về

- tính từ sở hữu + danh từ

`4,` friend of mine

- one of + tính từ sở hữu + danh từ số nhiều

-> (a/an) + danh từ + of + đại từ sở hữu

`5,` isn’t theirs

`6,` close friend of mine

`7,` he wanted to become a member of their school IT club.

- Câu tường thuật với câu kể : S + said (that) + S + V (lùi thì)

`8,` her brother would use an app on her smartphone to practice speaking regularly.

- will `->` would

`9,` his robot was cleaning the house and cooking at the same time.

- HTTD `->` QKTD

`10,` I came home while my mom was cooking in the kitchen.

- see sb doing sth : thấy ai đang làm gì

- QKĐ/ QKTD + whike + QKTD : trong khi

1. I will be fifthteen next week

TLĐ: S + will + V-bare + O

2. Hanh never uses plastic bags when going shopping

never `->` HTĐ

HTĐ: S + V-s/es + O

3. her smartphone 

TTSH + N

4. friend of mine

S + be + (a/an) + N + of + ĐTSH

5. isn’t theirs

be + ĐTSH

6. close friend of mine

S + be + (a/an) + N + of + ĐTSH

7. he wanted to become a member of their school IT club

Câu gián tiếp: S + said/.... + (that) + S + V-lùi thì

QKĐ -> HTĐ

8. her brother would use an app on her smartphone to practice speaking regularly

Câu gián tiếp: S + said/.... + (that) + S + V-lùi thì

will -> would

9. his robot was cleaning the house and cooking at the same time

Câu gián tiếp: S + said/.... + (that) + S + V-lùi thì

HTTD -> QKTD

10. I came home while my mom was cooking in the kitchen

S + V2/ed + while + S + was/were + V-ing + O