1. The last time we visited our home village was 2 years ago

---> we have

2. The government has built two impressive plazas this year

--> Two impressive plazas

1. We have visited out home village since 2 years ago

- the last time +  S +  V(ed/v2) + O 

<=> S +  has/have +  V(pp) +  O

2. Two impressive plazas have been built this year. 

- Bị động HTHT:  S + has/have +  been +  V(pp) +  O

`1`.We have not visited our home village for `2` years

`->` Thì HTHT ( PĐ ) : S + haven't / hasn't + VpII

`=>` I , You , We , They `+` haven't

`->` The last time + S + Ved / V2 + was + time / timeline : Lần cuối làm gì

`=>` S + haven't / hasn't + VpII + for time / since timeline : Chưa làm gì

`2`.Two impressive plazas have been built by the government this year

`->` BĐ `-` HTHT : S + have / has + been + VpII ( by O )

`=>` I , You , We , They `+` have

`\text{# TF}`