1. I did homework last night.

2. My father stayed up late yesterday.

3. My mom went shopping last week.

4. He played tennis two weeks ago.

Cấu trúc: S+V-ed/-c2+...

$\text{- Cấu trúc quá khứ đơn: }$

(+) S+ Vpp/ed

(-) S+ didn't+ V(inf)

(?) Did+ S+ V(inf)?

$\text{1. I did homework last night. }$

- DHNB: last night

- do sang quá khứ đơn : did

$\text{2. My father stayed up late yesterday.}$

- Stay sang quá khứ đơn: stayed

- DHNB: yesterday

$\text{3. My mom went shopping last week}$

- go sang quá khứ đơn: went

- DHNB: last week

$\text{4. He played tennis two weeks ago.}$

- play sang quá khứ đơn: played

- DHNB: two weeks ago