Third Conditional for Past Alternatives

What you’ll learn

Imagine different past events and consequences.

ស្រមៃជម្រើស និងលទ្ធផលខុសពីអតីតកាលពិត។

Meaning and use

The third conditional uses if + past perfect with would have + past participle in the result. It imagines an alternative to a past event that cannot now be changed. Could have and might have express ability or possibility rather than the more definite imagined result of would have.

Third conditional ស្រមៃអតីតកាលខុសពីអ្វីដែលបានកើតឡើង។ ប្រើ had + past participle ក្រោយ if និង would have + past participle សម្រាប់លទ្ធផល។

Grammar patterns

Pattern	Example or form
Past alternative	if + had + past participle
Imagined past result	would/could/might have + past participle

Examples

1. If I had left earlier, I would have caught the bus.

   បើខ្ញុំបានចេញមុន ខ្ញុំនឹងបានទាន់ឡានក្រុង។

2. She would have helped if she had known.

   នាងនឹងបានជួយ បើនាងបានដឹង។

3. If we had booked sooner, we could have found cheaper seats.

   បើយើងបានកក់មុន យើងអាចបានកន្លែងថោកជាងនេះ។

4. Would you have joined us if we had invited you?

   តើអ្នកនឹងបានចូលរួមទេ បើយើងបានអញ្ជើញអ្នក?

Everyday conversation

Dara: Why did you miss the train?

Maly: If I had checked the time, I would have arrived earlier.

Common mistakes

Instead of	Use	Why
If I had knew, I would have helped.	If I had known, I would have helped.	Use the participle known after had.
I would have go if you had called.	I would have gone if you had called.	Use the participle gone after have.

Practice

Try these questions before opening the answers. Write or say each answer.

សាកល្បងឆ្លើយសំណួរទាំងនេះជាមុនសិន មុននឹងបើកមើលចម្លើយ។ អ្នកអាចសរសេរ ឬនិយាយចម្លើយរបស់អ្នក។

1. Complete: If she ___ (study), she would have passed.
2. Complete: We would have ___ (come) if you had asked.
3. What is implied by If I had seen him, I would have said hello?

Answers and explanations

Show answers / បង្ហាញចម្លើយ

1. had studied

   The unreal past condition uses past perfect.

2. come

   Come is also the past participle of come.

3. The speaker did not see him in the relevant past situation.

   The sentence imagines a different past.

Quick recap

• Past alternative: if + had + past participle
• Imagined past result: would/could/might have + past participle