`1.` ate

`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 

`16.` took 

`17.` enjoyed 

`18.` didn't disturb 

`19.` left 

`20.` didn't sleep 

`21.` flew 

`22.` cost 

`23.` didn't have 

`24.` were 

`25.` took

`26.` enjoyed 

`-` 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

`(?)` was/ 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,…