Cấu trúc thì quá khứ đơn :

Với động từ thường :

` ( + ) ` : S + V-ed / V2

` ( - ) `: S + didn't + V nguyên mẫu

` ( ? ) `: Did + S + V nguyên mẫu

Với tobe

` ( + ) ` : S + was / were + ...

` ( - ) ` : S + was / were + not + ...

`( ? ) ` : Was / Were + S + ... ?

` +` Nếu chủ ngữ là I / he / she / it + was + ( not ) + ...

` + ` Nếu chủ ngữ là you / we / they + were + ( not ) + ...

` - ` Các dấu hiệu nhận biết thường gặp : 

` + ` last night , last week , 5 years ago , 2 years ago , in the past , ....

Cấu trúc câu bị động thì quá khứ đơn :

` ( + ) `: S + was / were + V3 + ( by O )

` ( - ) ` : S + was / were + not + V3 + ( by O )

`( ? ) ` : Was /Were + S + V3 + ( by O ) ? 

Cấu trúc câu bị động thì hiện tại hoàn thành :

` - ` S + have / has +( not )  been + V3 + ( by O )

Phân biệt câu chủ động và câu bị động

` - ` Câu chủ động là dạng câu mà ai đó thực hiện hoặc tác động lên ai đó , vật nào đó

` - ` Câu bị động là dạng câu mà ai đó , vật nào đó bị ai tác động lên

` 1 `: has been used 

` - ` Dấu hiệu của thì hiện tại hoàn thành : for 2 years

` 2 `: was discovered

` 3 ` : has been widened

` - ` Dấu hiệu của thì hiện tại hoàn thành : since 1999

` 4 ` : was finished

` 5 `  : is situated

` - ` Bị động thì hiện tại đơn : S + is / am / are + V3 + ( by O )

` - `Be situated in : Nằm ở

` 6 ` : was built

`7 ` : visited 

` 8 ` : was completed

` 9 ` : was formed

` 10 ` : was opened

1. This computer    has been used     (use) for two years.

2. America      was discovered     (discover) by Christopher Columbus.

3. I think this institution    has been widen     (widen) twice since 1999.

4. Sydney Opera House in Australia      was finished         (finish) in 1973.

5. My sister is studying law at Viet Nam National University, Ho Chi Minh city now. This university          is situated      (situate) in Thu Due District.

6. The Great Wall in China    was built       (build) many centuries ago.

7. David and his father      visited     (visit) the Temple of Literature last week.

8. The Golden Gate Bridge in San Francisco    was completed       (complete) in 1937.

9. The University of Cambridge    was formed        (form) in 1209. It is always considered to be one of the most prestigious universities in the world.

10. BurjKhalifa in Dubai, the highest building in the world,    was opened       (open) in 2010.