1.Which is the biggest city in Vietnam ? 

-> SO sánh nhất : Wh-? + tobe + the + tính từ ngắn thêm est + .... ? 

2.Minh 's friends are going to have a picnice near lake .

-> S+is/am/are + going to + V-inf + ... 

3.I'd like a sandwich and a glass of milk please 

-> S + would like + (a/an ) + N + ... + please ( có hoặc ko ) 

-> a glass of + N 

4.Minh left house at haft past six yesterday .

-> thì QKĐ , dấu hiệu : yesterday 

-> S + Ved/cột 2 + ....

-> at + time 

5. Ho Chi Minh City has a population of 3.5 million. 

-> TP.HCM có 3,5 triệu dân số 

-> He/she/it/danh từ số ít + has + ... 

6.My mother has never visited Ha Long Bay before .

-> thì HTHT , dấu hiệu : before 

-> S  + has/have + Vpp 

7.If it is sunny next week , we will have a picnic in mountain .

-> câu điều kiện loại  1 : If + S + V(present simple ) , S + will/may/can + V(future simple ) 

8.We couldn't speak English when we were five years old. 

-> Thì QKĐ , dấu hiệu : when we were five years old 

-> can not ( ở QK ) = couldn't 

9. Please turn off the light when we don't use.

-> Câu mệnh lệnh : please + V-inf + ( when ) + S + don't/doensn't + V-inf 

10.HCM is the biggest city in Vietnam 

-> SO sánh nhất : S + tobe + the + tính từ ngắn thêm est+ .... 

Xin hay nhất ạ ><

@Chaeyoung