Past Continuous — Thì Quá khứ tiếp diễnvsPast Perfect — Thì Quá khứ hoàn thành

Tóm tắt

Past Continuous diễn tả hành động đang diễn ra tại một thời điểm xác định trong quá khứ.

	Khẳng định	Phủ định	Nghi vấn
I/He/She/It	was working	was not working	Was ... working?
You/We/They	were working	were not working	Were ... working?

• At 8 pm last night, I was studying for the exam.
• They were not sleeping when we arrived.
• Were you watching TV when I called?

Tại sao quan trọng

Past Continuous là công cụ kể chuyện quan trọng trong IELTS: - Speaking Part 2: mô tả bối cảnh khi kể về sự kiện quá khứ - Writing Task 1: diễn tả xu hướng đang diễn ra tại một thời điểm - Tạo sự phong phú về ngữ pháp khi kết hợp với Past Simple

Cấu trúc và cách dùng

Cấu trúc

Subject + was/were + V-ing

Lưu ý: Dùng was cho I/he/she/it; were cho you/we/they.

4 cách dùng chính

1. Hành động đang diễn ra tại một thời điểm cụ thể trong quá khứ

Thường đi với: at 8 o'clock, at this time yesterday, at noon last Tuesday...

• This time last year, she was living in London.
• At midnight, the children were still sleeping.
• What were you doing at 3 pm on Monday?

2. Hành động đang diễn ra thì bị gián đoạn (Past Continuous + Past Simple)

Past Continuous (background) + when + Past Simple (interruption)

• I was reading a book when the phone rang.
• She was cooking dinner when he arrived home.
• They were discussing the plan when the power went out.

Mẹo: Past Continuous = hành động nền dài; Past Simple = sự kiện ngắn bất ngờ xảy đến.

3. Hai hành động song song trong quá khứ

Past Continuous + while + Past Continuous

• She was reading while he was watching TV.
• The students were taking notes while the teacher was explaining.
• I was cooking while my sister was setting the table.

4. Mô tả bối cảnh / tạo không khí trong kể chuyện

• The sun was shining, birds were singing, and children were playing in the park.
• When we arrived, everyone was enjoying themselves.
• The city was buzzing with excitement — it was the night before the festival.

Dấu hiệu nhận biết

Từ/Cụm từ	Ví dụ
at + thời điểm + yesterday/last...	at 5 pm yesterday
this time + last week/year	this time last month
when (+ Past Simple)	when I arrived
while	while they were working
all morning/evening/day	all morning yesterday

So sánh Past Continuous vs Past Simple

	Past Continuous	Past Simple
Ý nghĩa	Đang xảy ra (chưa xong)	Đã xảy ra và kết thúc
Thời gian	Kéo dài / nền	Điểm thời gian / hoàn thành
Kết hợp	"when + PS" = bị gián đoạn	"when + PC" = sự kiện bất ngờ

• I was walking home when it started to rain. (đang đi thì trời bắt đầu mưa)
• I walked home when it stopped raining. (đợi tạnh mưa rồi đi bộ về)

Lỗi thường gặp

Lỗi 1: Dùng was/were nhầm

• ❌ You was sleeping.
• ✅ You were sleeping.
• ❌ They was playing football.
• ✅ They were playing football.

Lỗi 2: Quên -ing

• ❌ She was study when I called.
• ✅ She was studying when I called.

Lỗi 3: Dùng state verbs (stative verbs) với Past Continuous

Các động từ chỉ trạng thái không dùng với continuous tenses: know, believe, understand, want, need, like, love, hate, have (sở hữu), see (nhìn thấy), hear...

• ❌ I was knowing the answer.
• ✅ I knew the answer.
• ❌ She was loving the film.
• ✅ She loved the film.

Lỗi 4: Nhầm khi dùng "when" và "while"

• When thường đi với Past Simple: When she arrived, I was cooking.

• While thường đi với Past Continuous: While she was cooking, I was reading.

• ❌ While she arrived, I was cooking.

• ✅ When she arrived, I was cooking.
• ❌ When I was sleeping, he knocked.
• ✅ While I was sleeping, he knocked. / When I was sleeping, he knocked.

Lỗi 5: Dùng Past Continuous thay vì Past Simple cho hành động đã hoàn thành

• ❌ Yesterday, I was finishing my homework at 9 pm. (hàm ý chưa xong)
• ✅ Yesterday, I finished my homework at 9 pm.
• ✅ Yesterday, at 9 pm, I was finishing my homework. (đang làm tại thời điểm đó)

Ứng dụng trong IELTS

Speaking Part 2 — Kể chuyện sự kiện:

"I'd like to talk about a memorable trip to Hội An. When we arrived, the sun was setting and the lanterns were glowing everywhere. While my friends were taking photos, I was just standing there, taking it all in. It was one of the most magical moments I've ever experienced."

Speaking Part 1 — Mô tả quá khứ:

• "When I was studying at university, I was living near the campus."
• "This time last year, I was preparing for my IELTS exam."

Writing Task 1 — Mô tả xu hướng tại thời điểm:

• "In 2005, the rate was rising steadily before it peaked in 2008."
• "While the number of urban residents was increasing, rural populations were declining."

Writing Task 2 — Mô tả bối cảnh lịch sử:

• "In the early 20th century, scientists were beginning to understand the link between diet and health."
• "While governments were focusing on economic growth, environmental concerns were being largely ignored."

Bài tập luyện

Chia động từ đúng (Past Simple hoặc Past Continuous)

1. I (read) ___ a book when she (call) ___ me.
2. They (play) ___ football when it (start) ___ raining.
3. At 10 pm, he (sleep) ___.
4. While she (cook) ___ dinner, I (do) ___ my homework.
5. What (you/do) ___ at midnight last night?

Chọn "when" hoặc "while"

1. ___ I was studying, my phone rang.
2. ___ she arrived, we were having dinner.
3. He was reading ___ his wife was watching TV.
4. The alarm went off ___ I was sleeping.

Sửa lỗi

1. She was know the truth all along.
2. You was working very hard yesterday.
3. While he arrived, I was cooking.
4. I was finishing the report at 6 pm yesterday.

Đáp án

Chia động từ: 1. was reading / called | 2. were playing / started | 3. was sleeping | 4. was cooking / was doing | 5. were you doing

When/While: 1. While | 2. When | 3. while | 4. while / when

Sửa lỗi: 1. She knew the truth all along. (stative verb) 2. You were working very hard yesterday. 3. When he arrived, I was cooking. 4. I finished the report at 6 pm yesterday. (hành động hoàn thành → Past Simple)

Tóm tắt nhanh

Cách dùng	Cấu trúc	Ví dụ
Hành động đang xảy ra tại thời điểm QK	was/were + V-ing	At noon, I was eating.
Hành động bị gián đoạn	PC + when + PS	I was studying when she called.
Hai hành động song song	PC + while + PC	He was reading while she was cooking.
Mô tả bối cảnh	PC (nền) + PS (sự kiện)	The rain was falling when we left.

Quy tắc vàng: - was = I / he / she / it - were = you / we / they - Stative verbs (know, want, love...) không dùng Past Continuous - Past Continuous = nền/bối cảnh; Past Simple = sự kiện xảy đến

Tóm tắt

Past Perfect diễn tả hành động đã hoàn thành trước một thời điểm hoặc hành động khác trong quá khứ.

	Khẳng định	Phủ định	Nghi vấn
Tất cả chủ ngữ	had + V3/V-ed	had not (hadn't) + V3	Had + S + V3?

• By the time she arrived, I had already eaten.
• They hadn't finished the project when the deadline passed.
• Had you met him before the interview?

Tại sao quan trọng

Past Perfect là dấu hiệu văn phong tinh tế trong IELTS: - Sắp xếp hai hành động quá khứ theo trình tự thời gian chính xác - Dùng trong điều kiện loại 3 (If + had V3...) - Dùng trong câu tường thuật (Reported Speech) - Phân biệt rõ ràng cái gì xảy ra trước, cái gì xảy ra sau

Cấu trúc và cách dùng

Cấu trúc

Subject + had + past participle (V3)

Chú ý: Tất cả các ngôi đều dùng had (không đổi).

4 cách dùng chính

1. Hành động xảy ra trước một thời điểm/hành động trong quá khứ

Past Perfect (trước) → Past Simple (sau)

• When I arrived at the cinema, the film had already started. (phim bắt đầu trước khi tôi đến)
• She had lived in Paris for 10 years before she moved to London.
• By the time he called, she had left the office.

Hình dung theo trục thời gian: Quá khứ xa (PP) → Quá khứ gần (PS) → Hiện tại

2. Kết hợp với "by the time / by + time expression"

"By the time..." + Past Simple → Past Perfect đã xảy ra rồi

• By the time the guests arrived, we had prepared everything.
• By 2010, the company had expanded to 20 countries.
• By the time she was 30, she had published three novels.

3. Trong câu tường thuật (Reported Speech)

Present Perfect → Past Perfect khi tường thuật:

• "I have finished the report." → She said she had finished the report.
• "They have arrived." → He told me they had arrived.

4. Trong câu điều kiện loại 3

If + Past Perfect, would have + V3

• If I had studied harder, I would have passed.
• If she hadn't missed the bus, she would have been on time.

Dấu hiệu nhận biết

Từ/Cụm từ	Ví dụ
by the time	By the time he arrived...
before	Before she left, she had...
after	After they had eaten, they...
already	She had already finished.
by + time	By 2020, they had...
when (kết hợp với PS)	When I arrived, she had...
just	He had just left when...

So sánh Past Perfect vs Past Simple

	Past Perfect	Past Simple
Thứ tự	Xảy ra TRƯỚC trong quá khứ	Xảy ra SAU hoặc tại một thời điểm
Mục đích	Làm rõ trình tự thời gian	Kể sự kiện theo thứ tự xuất hiện

Ví dụ phân biệt:

• When I arrived, she left. (Tôi đến thì cô ấy ra đi — cùng lúc hoặc sau)

• When I arrived, she had left. (Cô ấy đã ra đi trước khi tôi đến)

• I ate dinner and watched a film. (Hai việc nối tiếp, kể theo thứ tự)

• After I had eaten dinner, I watched a film. (Nhấn mạnh bữa tối xong trước)

So sánh Past Perfect vs Present Perfect

	Past Perfect	Present Perfect
Mốc tham chiếu	Một thời điểm trong QUÁKHỨ	Hiện tại
Ví dụ	She had left before he arrived.	She has left — she's not here now.

Lỗi thường gặp

Lỗi 1: Dùng Past Simple thay Past Perfect khi cần làm rõ trình tự

• ❌ When I arrived, she already left.
• ✅ When I arrived, she had already left.
• ❌ After he finished his meal, he paid the bill. (chấp nhận được nhưng PP rõ hơn)
• ✅ After he had finished his meal, he paid the bill.

Lỗi 2: Dùng "had" nhưng quên V3

• ❌ She had went to the shop.
• ✅ She had gone to the shop.
• ❌ He had ate all the food.
• ✅ He had eaten all the food.

Lỗi 3: Nhầm V3 của động từ bất quy tắc

Infinitive	Past Simple	Past Participle
go	went	gone
eat	ate	eaten
write	wrote	written
see	saw	seen
take	took	taken
give	gave	given
begin	began	begun
break	broke	broken

• ❌ He had wrote a letter. → ✅ He had written a letter.
• ❌ She had saw the film. → ✅ She had seen the film.

Lỗi 4: Lạm dụng Past Perfect — dùng khi không cần thiết

Nếu trình tự thời gian đã rõ qua "before/after", Past Simple cũng chấp nhận được:

• ✅ She left before he arrived. (rõ ràng — "before" đã chỉ trình tự)
• ✅ She had left before he arrived. (cũng đúng, nhấn mạnh hơn)

Lỗi 5: Dùng Past Perfect thay vì Past Simple trong hành động bình thường

• ❌ I had woken up at 7 am and had had breakfast. Then I had gone to school.
• ✅ I woke up at 7 am, had breakfast, and went to school. (Past Perfect chỉ cần thiết khi muốn làm rõ một hành động xảy ra trước hành động khác)

Ứng dụng trong IELTS

Speaking Part 2 — Kể chuyện với trình tự rõ ràng:

"I'd like to talk about a job interview I remember well. By the time I arrived at the office, I had rehearsed my answers dozens of times. The interviewer asked about a project I had managed, and fortunately, I had prepared specific examples. It turned out that the interviewer had read my portfolio beforehand, which made the conversation much easier."

Writing Task 2 — Phân tích nguyên nhân và lịch sử:

• "By the time governments began to address climate change, significant damage had already been done."
• "The economic crisis of 2008 revealed that banks had been lending irresponsibly for years."
• "Many of the problems facing cities today stem from decisions that planners had made decades earlier."

Conditionals Type 3 — Đánh giá lịch sử:

• "If stricter regulations had been introduced earlier, the environmental damage would have been far less severe."
• "The accident might have been avoided if safety protocols had been followed."

Bài tập luyện

Chia động từ đúng (Past Simple hoặc Past Perfect)

1. When I (arrive) , the party already (start) .
2. She (not eat) ___ anything before she (go) ___ to the interview.
3. By the time he (call) ___, I already (leave) ___ the office.
4. After they (finish) ___ dinner, they (watch) ___ a film.
5. The police (discover) ___ that someone (break into) ___ the building.

Sửa lỗi

1. She had went to Paris before.
2. When I arrived, he already left.
3. By the time the doctor came, the patient had past away.
4. I had woken up at 6 am and had gone for a run and had had breakfast.

Đáp án

Chia động từ: 1. arrived / had already started | 2. hadn't eaten / went | 3. called / had already left | 4. had finished / watched | 5. discovered / had broken into

Sửa lỗi: 1. She had gone to Paris before. (V3 bất quy tắc) 2. When I arrived, he had already left. (trình tự: left → arrived) 3. She had passed away. (pass away → passed away, không phải "past") 4. I woke up at 6 am, went for a run, and had breakfast. (không cần PP vì thứ tự đã rõ)

Tóm tắt nhanh

Cách dùng	Cấu trúc	Ví dụ
Hành động xảy ra TRƯỚC trong QK	had + V3	She had left before he arrived.
Với "by the time"	By the time S + PS, S + PP	By the time I arrived, it had started.
Sau "after"	After S + PP, S + PS	After she had eaten, she left.
Conditional Type 3	If + PP, would have + V3	If I had known, I would have helped.
Reported Speech	said + PP	She said she had finished.

Quy tắc vàng: - Dùng Past Perfect khi cần làm rõ hành động nào xảy ra trước trong quá khứ - Không lạm dụng — chỉ dùng khi trình tự thời gian không rõ nếu không có PP - Tất cả các ngôi đều dùng had (không đổi) - Chú ý V3 bất quy tắc: go→gone, eat→eaten, write→written, see→seen