1. My mum has visited a safari park.

2. I have never camped in the winter.

3. Have you ever picked fruit from a tree?

4. Has Kris ever climbed a mountain?

5. We have never returned to the amazing campsite in the woods.

6. My little sisters have played in the snow.

- Cấu trúc hiện tại hoàn thành:

(+) S + have/ has + PII.

( - )S + haven’t/ hasn’t + PII.

( ? )Have/Has + S + PII?

`1.` My mum has visited a safari park 

`2.` I have never camped in the winter

`3.` Have you ever picked fruit from a tree?

`4.` Has Kris ever climbed a mountain?

`5.` We have never returned to the amazing campsite in the woods

`6.` My little sisters have played in snow

*Cấu trúc thì hiện tại hoàn thành:

(+) S + has/ have + V_ed/ V3

(- ) S + has/ have + not + V_ed/ V3

(? ) Has/ Have + S + V_ed/ V3?

*Dấu hiệu nhận biết: yet, ever, already, never, since, for + khoảng thời gian, just,...