`1,` This is the first time I have eaten this kind of food.
 `2,` He hasn't gone abroad before.
 `3,` She has been driving for 1 month.
 `4,` We have been eating since it started to rain.
 `5,` I haven't had my hair cut since I left her.
 `6,` She hasn't kissed me for 5 months.
`7,`  We haven't met for a long time.
 `8,` How long has it been since you had it`?`
 `9,` I haven't had such a delicious meal before.
 `10,` The last time I saw him was 8 days ago.
 `11,` It is since Monday that I took a bath.

`--------------`

`-` Thì hiện tại hoàn thành (Present Perfect):

`(+)` S `+` have`/` has `+` V`3`

`(-)` S `+` have`/ `has `+` not `+` V`3`

`(?)` Have`/` has `+` S `+` V`3` `?`

`@` Ctl : \(\left[ \begin{array}{l}Yes, S + have/has + V3.\\No, S + haven’t/hasn’t + V3.\end{array} \right.\) 

`@` Câu hỏi: How long `+` have`/`has `+` S `+` been `+` Ving`?` (`S` là chủ ngữ)

         Câu trả lời: S `+` have`/`has `+` Ved`/``3` `+` FOR `+` khoảng thời gian

           `S` `+` have`/`has `+` Ved`/``3` `+` SINCE `+` mốc thời gian

`1.` This is the first time I have eaten this kind of food.

`2.` He hasn't gone abroad before.

`3.` She has been driving for 1 month.

`4.` We have been eating since it started to rain.

`5.` I haven't had my hair cut since I left her.

`6.` She hasn't kissed me for 5 months.

`7.` We haven't met for a long time.

`8.` How long has it been since you had it?

`9.` I haven't had such a delicious meal before.

`10.` The last time I saw him was 8 days ago.

`11.` It is since Monday that I took a bath.

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

`@` Thì hiện tại hoàn thành:

`(+)` S`+`has/have`+`V(ed,c3)`+`O...

`(-)` S`+`has/have`+`not`+`V(ed,c3)`+`O...

`@` Cấu trúc how long: How long + Vtobe + S?

`giahan27511`