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 ? 
Cấu trúc thì quá khứ đơn với tobe 
` ( + ) ` : S + was / were + ... 
` ( - ) ` : S + wasn't / weren't + ... 
` ( ? ) ` : Was / Were + S + ... 
- Was not ` = ` Wasn't , Were not ` = ` Weren't 
` + ` I / he / she / it / chủ ngữ số ít + was ( not ) + ... 
` + ` You / we / they / chủ ngữ số nhiều + were ( not ) + ...

` 1 . ` ate 

Cách đúng hơn là was eating bởi vì at six o'clock yesterday là ` 1 ` mốc thời gian được xác định rõ ràng trong quá khứ nên ta chia thì quá khứ tiếp diễn

` 2 . ` Did - drive - did 

` 3 . ` bought 

` 4.` went 

` 5 . ` Did - swim - didn't 

` 6 . ` saw 

` 7 . ` did - drank 

` 8 . ` bit 

` 9 . ` did - get up 

` 10 . ` flew

` 11. ` heard 

` 12.` broke - hurt

` 13.` caught 

` 14.` did - read

` 15 . ` forgot -bring

`1.` ate

`-` eat - ate - eaten 

`2.` Did Helen drive - did

`3.` bought

`-` buy - bought - bought 

`4.` went

`-` go - went - gone

`5.` Did they swim - didn't

`6.` saw

`-` see - saw - seen

`7.` did - drank

`-` do - did - done

`-` drink - drank - drunk

`8.` bit

`-` bite - bit - bitten

`9.` did you get up 

`10.` flew

`-` fly - flew - flown 

`11.` heard

`-` hear - heard - heard

`12.` broke - hurt

`-` break - broke - broken

`-` hurt - hurt - hurt 

`13.` caught  

`14.` did you read

`15.` forgot - bring

`-` forget to do sth: quên làm gì

`-` forget - forgot - forgotten 

`-` Cấu trúc thì QKD: 

`-` Cấu trúc thì QKD:

`-` Với V thường

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

`( - )` S + didn't + V-inf + O

`( ? )` Did + S + V-inf + O?

`-` Với tobe:

`( + )` S (số ít + I, he,she,it) + was+ N/adj/... + O

S (số nhiều + you, we, they) + were + N/adj/... + O

`( - )` S (số ít + I, he, she, it) + wasn't + N/adj/... + O

S (số nhiều + you, we, they) + weren't + N/adj/... + O

`( ? )` Was+ S (số ít + I, he, she, it) + N/adj/... + O?

Were + S (số nhiều + you, we, they) + N/adj/... + O?