=>

1. What did you do yesterday? - I played with my friends.

2. Where were you two days ago?- I was at the zoo.

3. She didn't make a cake last night.

4. How was your summer holiday? - It was wonderful.

Thì QKĐ

Với động từ tobe:

(+) S was/were...

(-) S was/were not...

(?) Was/Were S...?

Với động từ thường:

(+) S V2/ed

(-) S didn't V

(?) Did S V?

$\\$`1.` What did you do yesterday? - I played with my friends.
$\\$`2.` Where were you two days ago? - I was at the zoo.
$\\$`3.` She didn't make a cake last night.
$\\$`4.` How was your summer holiday? - It was wonderful.

$\\$⇒ GT:
$\\$⇒ Thì QKĐ
$\\$`1.` Công thức
$\\$→ Với động từ thường:
$\\$`(+)` S `+` V - ed / V2.
$\\$`(-)` S `+` didn't `+` V
$\\$`(?)` (Wh-) `+` Did `+` S `+` V?

$\\$→ I / She / He / It `+` was / wasn't.
$\\$→ We / You / They `+` were / weren't.
$\\$`2.` Dấu hiệu nhận biết
$\\$⇒ Yesterday
$\\$⇒ Last summer /  year
$\\$⇒ In 500, December
$\\$⇒ In the 1999s
$\\$⇒ In the last century
$\\$⇒ In the past