`16`. has started

`17`. have turned

`18`. Have they paid

- pay - paid - paid: trả

`19`. has taken

- take - took - taken: lấy

`20`. have finished

`21`. Have you ever eaten

- eat - ate - eaten: ăn

`22`. hasn't come

- come - came - come: đến

`23`. have worked

`24`. Have you ever been

`25`. haven't done

- do/does - did - done: làm

`26`. have just seen

- see - saw - seen: gặp, nhìn

`27`. have just decided

`28`. has been

`29`. hasn't had

- have/has - had - had: có

`30`. hasn't played

--------------

* Thì Hiện tại hoàn thành:

$(+)$ S + have/has + Vpp

$(-)$ S + have/has + not + Vpp

$(?)$ (WH-word) + have/has + Vpp?

- Note:

`*` I/ You/ We/ They/ Danh từ số nhiều : have

`*` She/ He/ It/ Danh từ số ít/ Đại từ bất định : has

- DHNB: since, for, already, just, yet, ...

$\text{*Structure: Present Perfect}$

$\text{(+) S + have/has + Ved/V3 + ...}$

$\text{(-) S + have/has not + Ved/V3 + ...}$

$\text{(?) Have/Has + S + Ved/V3 + ...?}$

Ngôi thứ `3` số ít: it,he,she, tên riêng `->` has

Ngôi thứ `2`, `1`, `3` số nhiều: you, we, they, I, danh từ chỉ số nhiều `->` have

-----------------------------------------------

`16.` has started

`17.` have turned

`18.` Have they paid

`19.` has taken

`20.` have finished

`21.` Have you ever eaten

`22.` hasn't come

`23.` have worked

`24.` Have you ever been

`25.` haven't done

`26.` have seen

`27.` have decided

`28.` has been 

`29.` hasn't had

`30.` hasn't played

$chucbanhoctot$
$\textit{~KaitoKid!}$