Cấu trúc Thì QKTD :

- CKĐ : `\text{S + was / were + V-ing}`

- CPĐ : `\text{S + wasn't / weren't + V-ing}`

- CNV : `\text{Was / Were + S + V-ing ?}`

`7`.was doing

`8`.were using

`9`.Was it snowing ?

`10`.were plowing

`11`.were drinking

`12`.was selling

`\text{@ Fox}`

`7`. My daughter was doing her homework last night

`8`. They were using

`9`. Was it snowing yesterday?

`10`. The trucks were plowing

`11`. You were drinking

`12`. The farmer was selling

Cấu trúc thì Quá Khứ Tiếp Diễn:

   ( + ) S + was / were + V-ing

   ( - )  S + was / were + not + V-ing

   ( ? )  Was / were + S + V-ing?

#BTS