`I.`

`1.` Did you do 

`2.` went 

`3.` did you see

`II.`

`1.` didn't Emily come

`2.` had

`III.`

`1.` read

`2.` gave

`3.` Did you like

`4.` was

`IV.`

`1.` did you spend

`2.` went 

`3.` was it

`=============`

`-` Cấu trúc thì Quá Khứ Đơn:

`-` Động từ thường:

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

`(-)` S + didn’t + V..

`(?)` Did + S + V..?

`-` Động từ tobe:

`(+)` S + was/ were + O

`(-)` S + was/ were + not + O

`(?)` as/ were + S + O.?

`-` I/ He/ She/ It/ N số ít + was

`-` We/ You/ They/ N số nhiều + were

`->` Dấu hiệu nhận biết: in, last, ago, yesterday,…

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 ) + ...

1A : did you do 

1B : went 

 1A: did you see 

2A : didn't Emily come 

2B : had 

3A : read - gave 

3B : did you like

3A : was

4A : did you spend

4B : went

4A : was it