`#Nae`

`@` Thì `QKĐ`:

`-` Cấu trúc (Động từ thường):

`(+)` S `+` V`2`/ed `+` O

`(-)` S `+` didn't `+` Vinf `+` O

`(?)` Did `+` S `+` Vinf `+` O `?` (Yes/No question)

`(?)` Wh-words `+` did `+` S `+` Vinf `+` O `?` (Wh-question)

`-` Cấu trúc (Động từ tobe):

`(+)` S `+` was/were `+` adj/N(s) `+` O

`(-)` S `+` wasn't/weren't `+` adj/N(s) `+` O

`(?)` Was/Were `+` S `+` adj/N(s) `+` O `?`

`=>` Áp dụng làm bài tập:

Exercise `1`:

`A)` 

`1.` tidied

`2.` didn't tidy

`3.` Did your sister tidy

`B)`

`1.` lived

`2.` didn't live

`3.` Did you live

`C)` 

`1.` talked

`2.` didn't talk

`3.` Did Sandra and Elsa talk

Exercise `2`:

`1.` waited

`2.` invited

`3.` didn't live

`4.` Did you like

`5.` didn't visit

`6.` Did your grandparents dance

`7.` stopped

`8.` didn't water

`9.` didn't study

`10.` rained

`11.` Did she try

`12.` ended

`13.` walked

`14.` washed

`15.` didn't work