`1.`

DHNB: last week `->` QKĐ

$\text{Form:}$

`+)` S + was/were + adj/N

be `=>` were

`2.`

DHNB: yesterday `->` QKĐ

$\text{Form:}$

`+)` S + was/were + adj/N

be `=>` was
`3.`

DHNB: last day `->` QKĐ

$\text{Form:}$

`+)` S + was/were + adj/N

be `=>` was

`4.`

DHNB: yesterday `->` QKĐ

$\text{Form:}$

`+)` S + wasn't/weren't + adj/N

not be `=>` weren't

`5.`

DHNB: 3 years ago `->` QKĐ

$\text{Form:}$

`+)` S + was/were + adj/N

be `=>` was

`6.` 

$\text{Form:}$

`+)` S + am/is/are + adj/N

be `=>` are

`7.`

$\text{Form:}$

`+)` When + S + V(ed/PII) + adv/O, S + V(ed/PII) + adv/O

be `=>` was

be `=>` was

`8.`

$\text{Form:}$

`+)` be born

`+)` S + was/were + V(PII) + adv/O

be `=>` was

`9.`

DHNB: a year ago `->` QKĐ

$\text{Form:}$

`+)` S + was/were + adj/N

be `=>` was

`10.`

DHNB: last weekend `->` QKĐ

$\text{Form:}$

`+)` S + was/were + adj/N

be `=>` were

--------------------------------

`1.`

$\text{Form:}$

`+)` S + don't/doesn't + V(inf) + adv/O

not study `=>` doesn't study

`\ttcolor{Skyblue}{@Henryy<33l}`

Câu `1:` were.

Câu `2:` was.

Câu `3:` was.

Câu `4:` weren't.

Câu `5:` was.

Câu `6:` were.

Câu `7:` was.

Câu `8:` was.

Câu `9:` was.

Câu `10:` were.

_________

`-` Forms:

`+` Thể khẳng định: S + was/were + O.

`+` Thể phủ định: S + was/were + not.

`+` Thể nghi vấn: Was/Were + S + N/Adj?

`@` Yes, S + was/were hoặc No, S + wasn’t/weren’t.

`-` DHNB: last week; last yeak; ...