Grammar: ⚙️ Verbs in Depth: ⏳ Perfect Continuous & Future Perfect Tenses (B2) - Lesson 4: Past Perfect Continuous (Duration of an action before another past action)

B1: Past Perfect Continuous

history

The Long Past

អតីតកាលបរិបូរណ៍កំពុងបន្ត (Past Perfect Continuous)

We use this tense to talk about the duration of an action that was happening up to a point in the past.

យើងប្រើវាដើម្បីបញ្ជាក់ពី "រយៈពេល" នៃសកម្មភាពមួយ ដែលបាននិងកំពុងកើតឡើង រហូតដល់ចំណុចណាមួយក្នុងអតីតកាល។

build

build The Formula

រូបមន្តទូទៅ

Subject + had been + V-ing

We often use time words like for, since, all day, or before with this tense.

timelapse

timelapse Focus on Duration

ផ្តោតលើរយៈពេលនៃសកម្មភាព

hourglass_empty

They had been waiting for an hour when the bus arrived.

ពួកគេបានរង់ចាំអស់រយៈពេលមួយម៉ោង ទម្រាំតែឡានក្រុងមកដល់។

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She had been studying all day, so she was tired.

នាងបានរៀនពេញមួយថ្ងៃ ដូច្នេះហើយទើបនាងហត់នឿយ។

timeline Completion vs. Duration

Simple vs. Continuous

Past Perfect Simple ផ្តោតលើលទ្ធផលដែលសម្រេចបាន ចំណែក Past Perfect Continuous ផ្តោតលើរយៈពេល ឬសកម្មភាពខ្លួនវាផ្ទាល់។

Completed Result

I had painted the room.

(The job was finished.)

Action / Duration

I had been painting the room.

(Maybe not finished, but I was tired.)

Video Lesson

មេរៀនជាវីដេអូ

The Long Past 🎬

Watch Teacher Sopheak explain the timeline for the Past Perfect Continuous. Notice how he explains the difference between finishing a task versus just focusing on how long it took!

quiz

Quick Check ⚡

ការត្រួតពិនិត្យចំណេះដឹង ⚡

build Structure

I ___ waiting for 2 hours when he arrived.

(ខ្ញុំបានរង់ចាំអស់ ២ ម៉ោង ទម្រាំគាត់មកដល់។)

timeline Timeline

"Her eyes were red because she had been crying."
Which happened first?

(តើសកម្មភាពមួយណាកើតឡើងមុនគេ?)

gpp_maybe TRICKY QUESTION!

True or False: Past Perfect Continuous focuses on the completion of an action.

(តើកាលនេះផ្តោតលើការបញ្ចប់សកម្មភាព ឬអត់?)

psychology Context

When the teacher walked in, the students ___ talking for 10 minutes.

visibility

edit_document Mission 1!

Write it ✍️

Write 1 sentence explaining why you were tired yesterday using "I had been...". (e.g. "I was tired because I had been working.")

សរសេរប្រយោគ ១ ប្រាប់ពីមូលហេតុដែលអ្នកហត់កាលពីម្សិលមិញ ដោយប្រើ "I had been..."

I did it! check_circle

visibility

record_voice_over Mission 2!

Voice Note 🎤

Record yourself talking about what you had been doing right before it rained last time.

ថតសំឡេងខ្លួនឯង និយាយរៀបរាប់ពីអ្វីដែលអ្នកបានកំពុងធ្វើ មុនពេលមេឃភ្លៀងកាលពីលើកមុន។

I did it! check_circle

visibility

search Mission 3!

Detect It 🕵️‍♂️

Find an English news article online and locate at least 1 sentence using "had been + V-ing".

រកមើលអត្ថបទព័ត៌មានភាសាអង់គ្លេស ហើយស្វែងរកប្រយោគដែលមានប្រើទម្រង់ "had been + V-ing" ចំនួន ១។

I did it! check_circle

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