Unit 9: Natural Disasters
Part 3: Grammar
Thì quá khứ tiếp diễn
🟡 Trung bình60 phút
Grammar: Past Continuous Tense
11. Structure
📐 Cấu trúc quá khứ tiếp diễn:
Khẳng định:
S + was/were + V-ing
I was sleeping when the earthquake happened.
Phủ định:
S + wasn't/weren't + V-ing
She wasn't watching TV.
Nghi vấn:
Was/Were + S + V-ing?
Were you studying?
22. Usage
📌 Cách dùng:
1. Hành động đang xảy ra tại 1 thời điểm quá khứ:
At 8 p.m. yesterday, I was watching TV.
2. Hành động đang xảy ra thì có hành động khác xen vào:
I was sleeping when the phone rang.
(Past continuous + when + past simple)
3. Hai hành động đang xảy ra song song:
While I was studying, she was cooking.
(While + past continuous, past continuous)
33. Past Continuous vs Past Simple
📊 So sánh:
| Tense | Usage | Example |
|---|---|---|
| Past Continuous | Hành động đang xảy ra (dài) | I was walking |
| Past Simple | Hành động xen vào (ngắn) | it started to rain |
Ex: I was walking (dài) when it started to rain (ngắn).