giúp em với mọi người

`1,` was travelling

`2,` fell down

`3,` broke

`4,` wasn't looking

`5,` hurt

`6,` died

`7,` was raining

`8,` was falling sleep

`9,` was sleeping

`10,` was chasing

`11,` was studying - came

`12,` was walking - met

`13,` woke - was washing

`14,` was walking - phoned

`15,` was having - started

____________________________________

`@` Quá khứ đơn

(+) S + V2/ed ...

(-) S + didn't + Vbare-inf ...

(?) Did + S + Vbare-inf ... ?

`@` Quá khứ tiếp diễn

(+) S + was/were + V-ing ...

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

(?) Was/were + S + V-ing ... ?

- Hành động đang diễn ra thì hành động khác chen vào

+ Hành động đang diễn ra -> QKTD

+ Hành động chen vào -> QKĐ

- Hai hành động cùng diễn ra song song -> QKTD

` 1`. was traveling

` 2`. fell down

` 3`. broke

` 4`. wasn't looking

` 5`. hurted

` 6`. died

` 7`. was raining

` 8`. fell asleep

` 9`. was sleeping

` 10`. was chasing

` 11`. was studying/were coming

` 12`. was walking/met

` 13`. woke/was washing

` 14`. was working/phoned

` 15`. were having/started

` ---------`

` @` Quá khứ đơn

` (+)` S + V-ed/V2 + ...

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

` (?)` Did + S + V-inf + ...?

` @` Quá khứ tiếp diễn

` (+)` S + was/were + V-ing + ...

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

` (?)` Was/were + S + V-ing + ...?