chia qkđ.                                              .

e

`11.` was `-` met

`12.` was `-` went

`13.` lost

`14.` switched

`15.` didn't write 

`16.` read

`______________`

`***` QKĐ:

`+` Tobe:
`(+)` S + was/were + N/adj

`(-)` S + was/were + not + N/adj

`(?)` Was/were + S + N/adj?

`*` I/ he / she / it / DTSI + was

`*` you / we / they / DTSN + were

`+` Verb:
`(+)` S + V2/ed + O
`(-)` S  + didn't +  V_inf + O

`(?)` Did + S +  V_inf + O?
`-` DHNB: last + week/month/... , yesterday, ago , ...

11. was - met
12. was - went
13. lost 
14. switched 
15. didn't write 

`16. ` read

`-` Quá khứ đơn:
Verb :
(+) S + V2/ed + O
(-)  S + didn't + V_inf + O
(?)  Did + S + V_inf + O
Tobe :
(+) S + was/were + N/adj
(-)  S + was/were + not + N/adj
(?)  Was/were + S + N/adj