third conditional
Jeremy didn’t put on his sunscreen. He got sunburnt.
If Jeremy had put on his sunscreen, he wouldn’t have got sunburnt.
Ivanka forgot to have breakfast. She was hungry all day.
If Ivanka hadn’t forgotten to have breakfast, she wouldn’t have been hungry all day.
Students didn’t learn irregular verbs. They couldn’t use proper grammar. (used learned in the answer)
If students had learned irregular verbs, they could’ve used proper grammar.
Oleg didn’t take out the mortgage. His family couldn't afford to buy a house.
If Oleg had taken out the mortgage, his family could have afforded to buy a house.
I had a headache. I couldn’t think straight anymore.
If I hadn’t had a headache, I could have thought straight.
The kid ate the whole cake by himself. He felt sick afterwards.
If the kid hadn’t eaten the whole cake by himself, he wouldn’t have felt sick.
Dasha got on the wrong bus. She was late on her first day at a new job.
If Dasha hadn’t got on the wrong bus, she wouldn’t have been late on her first day at a new job.
He didn’t do his homework. He didn’t understand the topic.
If he had done his homework, he would’ve understood the topic.