`1`. People have thrown rubbish into the forest for many years.

`2`. He has been an amater singer since `2001`.

`3`. I haven't gone to Ha Long yet.

`4`. Have you taken ten photographs in Ha Noi for a month?

`5`. I have ever been to New York.

`_________________________________________`

`***` Cấu trúc thì HTHT:

`+)` S + have/has + V-pII

`-)` S + have/has + not + V-pII

`?)` (Wh) + Have/Has + S + V-pII?

`1.` People have thrown rubbish into the forest for many years.

`2.` He has been an amateur singer since `2001`.

`3.` I haven't gone to Ha Long yet.

`4.` Have you taken ten photographs in Ha Noi for a month?

`5.` I have ever been to New York.

`@` Hiện tại hoàn thành:

`(+)` S `+` have/has + PII

`(-)` S `+` have/has `+` not `+` PII

`(?)` Have/Has `+` S `+` PII?

`-` For `+` khoảng thời gian.

`-` Since `+` mốc thời gian.