1. The Brown family has gone to Switzerland every winter for 4 years.

Dấu hiệu : For

2. My brother has eaten frogs' legs for 3 times

Dấu hiệu : For

3. Carol has been in Morocco since last month

Dấu hiệu : since

4. timothy has ridden a bus to school since his car broke down

Dấu hiệu : since

5. Jorge and Carmen has married since 1980

Dấu hiệu : since

6. Scientists have concerned with the world' s rain forests for many years

Dấu hiệu : For

7. James has known how to repair a computer for a long time

Dấu hiệu : For

8. I have wanted to go to Japan for several years

Dấu hiệu : For

9. Marry has been excited about space exploration since she was young

  Dấu hiệu : Since

Giải thích : Tất cả câu này là thì Hiện tại Hoàn Thành : S + have/ has + V3

$1.$ The Brown family has gone to Switzerland every winter for 4 years.

$2.$ My brother has eaten frogs' legs 3 times.

$3.$ Carol has been in Morocco since last month.

$4.$ Timothy has ridden a bus to school since his car broke down.

$5.$ Jorge and Carmen have been married since 1980.

$6.$ Scientists have been concerned with the world's rain forests for many years.

$7.$ James has known how to repair a computer for a long time.

$8.$ I have wanted to go to Japan for several years.

$9.$ Marry has been excited about space exploration since she was young.

*Cấu trúc: 

- Thì hiện tại hoàn thành: S + has/ have + V3.

- Dùng để chỉ hành động đã xảy ra trong quá khứ, còn tiếp tục ở hiện tại và sẽ còn tiếp diễn trong tương lai.

- Dùng để diễn tả trải nghiệm, kinh nghiệm.