You didn’t study, so you failed the exam.
If you had studied, you wouldn’t have failed the exam.
You didn’t study before, so now you don’t understand the topic.
If you had studied, you would understand the topic now.
You made a mistake in your homework
You should have checked your homework.
She didn’t leave early, so she missed the bus.
If she had left early, she wouldn’t have missed the bus.
She didn’t practice, so now she isn’t confident.
If she had practiced, she would be confident now.
She didn’t study and got a bad grade
She should have studied.
They didn’t invite him, so he didn’t come.
If they had invited him, he would have come.
I didn’t sleep well last night, so now I feel tired.
If I had slept well, I wouldn’t feel tired now.
I didn’t bring my jacket, and it was cold
I might have brought my jacket.
I didn’t see the warning, so I made a mistake.
f I had seen the warning, I
They didn’t save money, so now they can’t travel.
If they had saved money, they could travel now.
They didn’t try, so they failed
They could have tried harder.
We didn’t bring an umbrella, so we got wet.
If we had brought an umbrella, we wouldn’t have gotten wet.
He isn’t organized, so he lost his documents yesterday.
If he were organized, he wouldn’t have lost his documents.
He said something rude
He shouldn’t have said that.