Đề bài : present perfect rewriting 

`2)` It's the first time I have sseensuch a big house.

`3)` It's the first time she has spoken to a foreigner.

`4)` This is the first time she has drunk wine.

`5)` It's the first time I have done volunteer work.

`6)` It's the first time I have communicated with a robot.

`7)` My father has never scolded me before.

`8)` It/This is the first time he has worked in a group.

`9)` I have never eaten that food before.

`10)` It/This is the first time he has volunteered for the community.

`-` This/It is the first time + S + has/have + Ved/V3

`=` S + has/have + not + Ved/V3 + ... + before

`=` S + has/have + never + Ved/V3 + ... + before 

`VI)`

`1)` This is the most exciting camp I have ever taken part in.

`2)` Minh is the most confident person I have ever met. 

`-` S + be + tính từ ngắn đuôi est/most + tính từ dài + N + S + has/have + ever + Ved/V3

`=` S + has/have + never + Ved/V3 + a/an + tính từ ngắn đuôi er/more + tính từ dài + than + N/pronoun 

`@01042008`