`@#Camsama` 

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 ) + ...

` + `  Dấu hiệu thì quá khứ đơn của các câu trên : `  2 `  years ago , last year , yesterday , last week , last Monday 

` 1 `  . was 

` 2 `  . was  

` 3 `  . were 

` 4 `  . were 

` 5 `  . wasn't 

`6 ` . wasn't 

` 7 ` was not 

` 8 `  . were not 

` 9 ` .was not 

`10 ` . Was - was not 

` 11 `  . Was 

` 12 `  . were 

` 13 `  . Were - was