The Grammar Lab: Past Continuous (While vs. When)

The Grammar Lab B1

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While vs. When

អតីតកាលកំពុងបន្ត (Past Continuous)

The Long & The Short

We use Past Continuous for a long action happening in the past. We use Past Simple for a short action that interrupts it!

WAS / WERE + VERB-ING

សកម្មភាពវែង (កំពុងកើតឡើង) ត្រូវបានរំខានដោយ សកម្មភាពខ្លី (កើតឡើងភ្លាមៗ)។

🌊

While + Long Action

ប្រើ "While" បូកសកម្មភាពដែលកំពុងបន្ត

Start

End

Use While before the Continuous verb (-ing).
(ប្រែថា "ខណៈពេលដែលកំពុង...")

While I was walking in Siem Reap... ខណៈពេលដែលខ្ញុំកំពុងដើរលេងនៅសៀមរាប...

While she was cooking... ខណៈពេលដែលនាងកំពុងចម្អិនម្ហូប...

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When + Short Action

ប្រើ "When" បូកសកម្មភាពដែលចូលមករំខាន

X

Use When before the Simple Past verb (ed/irregular).
(ប្រែថា "ស្រាប់តែពេលនោះ...")

...when the phone rang. ...ស្រាប់តែពេលនោះទូរស័ព្ទរោទ៍ឡើង។

...when it started to rain. ...ស្រាប់តែមេឃចាប់ផ្តើមភ្លៀង។

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Test Your Instincts

ល្បែងផ្គូផ្គង: តើត្រូវប្រើ While ឬ When?

Pick the Linker

Click a card to check your answer!

___ I was readingCheck Answer

___ the car crashedCheck Answer

___ we were eatingCheck Answer

___ the lights went outCheck Answer

The Comma Trap! ⚠️

Front vs. Middle

(របៀបប្រើសញ្ញាក្បៀស អាស្រ័យលើទីតាំងពាក្យ While/When)

While I was eating, she called.

បើផ្តើមដោយ While/When ត្រូវដាក់ក្បៀស (,) នៅកណ្តាល។

She called while I was eating.

បើ While/When នៅកណ្តាល មិនបាច់ដាក់ក្បៀសទេ!

State Verb Trap! ⚠️

No -ING for feelings/thoughts!

(កិរិយាសព្ទសម្ដែងពីអារម្មណ៍ ឬការគិត មិនអាចប្រើជា -ing បានទេ!)

While I was knowing the answer... ❌

When I knew the answer... ✔️

Storytelling Skills 🎬

Watch Teacher Sopheak explain how to tell a story using past continuous to set the scene! Listen closely and practice along.

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Quick Check ⚡

ការត្រួតពិនិត្យរហ័ស ⚡

Choose the right linker

I was watching TV ___ my mom called.

(ខ្ញុំកំពុងមើលទូរទស្សន៍ ស្រាប់តែពេលនោះម៉ាក់ខ្ញុំតេមក។)

🌊

Choose the right linker

___ she was driving, she saw a dog.

(ខណៈពេលដែលនាងកំពុងបើកបរ នាងបានឃើញឆ្កែមួយ។)

🏂

Grammar Form

He broke his leg while he ___ skiing.

(គាត់បាក់ជើង ខណៈពេលដែលគាត់កំពុងជិះស្គី។)

PUNCTUATION TRAP ❌

Which sentence is correct?

(តើប្រយោគមួយណាត្រឹមត្រូវ?)

STATE VERB TRAP ❌

Which sentence is correct?

(តើប្រយោគមួយណាត្រឹមត្រូវ?)

🗣️

Mission 🎯

អនុវត្តជាក់ស្តែង!

Speak 🗣️ Answer out loud: What were you doing at 8 PM last night when the power went out?

✍️

Mission 🎯

អនុវត្តជាក់ស្តែង!

Write ✍️ Write a sentence about something that happened while you were traveling in Cambodia. (e.g., "While I was visiting Angkor Wat, it rained.")

🧠

Mission 🎯

អនុវត្តជាក់ស្តែង!

Remember 🧠 Think of yesterday. While you were eating dinner, what suddenly happened? Write it down!

Ask a Question 🙋‍♂️

តើអ្នកមានចម្ងល់មែនទេ? សួរគ្រូនៅទីនេះ!

U

Recent Questions

S

Sovan 3 hours ago

Teacher, can I use "while" for two actions that happen at the same time? Like, both are long actions?

Reply 👍 12

SP

Sopheak Pich Teacher 1 hour ago

Yes, absolutely Sovan! That's a great observation. If two long actions are happening at the exact same time, we use Past Continuous for both! Example: "While I was cooking, my brother was cleaning." Perfect! 👨‍🍳🧹