Công thức thì quá khứ đơn:

`-` Với động từ thường

$# (+) S + Ved/V2 +...$

$# (-) S + did not/didn't + V +...$

$# (?) Did + S + V +...?$

`-` Với động từ to be

$# (+) S + were/was + N +...$

$# (-) S + weren't/wasn't + N +...$

$# (?) Were/Was + S + N +...?$

`1.` They didn't come back home yesterday evening.

`2.` Yesterday he didn't arrive to Da Lat.

`3.`Did she listen to music yesterday ?

`4.` They didn't have many books many year ago.

`5.` Were you a worker a long time ago?

`6.` Did Daisy drink coffee with her boy friends yesterday ?

`7.` They didn't watch films many days ago.

`8.` He didn't clean his house last night.

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 ? 

` - ` Các dấu hiệu nhận biết : yesterday , in the past , many years ago , a long time ago , ... 

` 1 ` : didn't come

` 2 `: didn't arrive

` 3 ` : Did she listen

` 4 ` : didn't have

` 5 ` : Were ( Qúa khứ đơn với động từ tobe dạng nghi vấn : Was / Were + S + ... ? , Chủ ngữ là You thì dùng be là were )

` 6 ` : Did - drink

` 7 ` : didn't watch

` 8 ` : didn't clean