Regrets
You didn't study for the test, and now you have failed it.
If I had studied for the test, I wouldn't have failed it / I would have passed it.
You didn't go jogging this morning and now feel lazy and fat.
Your friend missed an important meeting because he overslept.
If he hadn't overslept, he would have attended the meeting. --> He shouldn't have overslept. / He should have woken up earlier.
If she had known about the traffic, she left earlier.
If she had known about the traffic, she would have left earlier.
You saved money during your first year of work. Now you can buy a car.
If you hadn't saved money during your first year of work, you wouldn't be able to buy a car now
If I hadn't forgotten her birthday, she wouldn't be upset now.
If I were you, I would had taken the offer.
If I were you, I would have taken the offer.
Your classmate failed the exam because he didn't listen to the review session.
If he had listened to the review session, he might not have failed. --> He should have listened to the review lesson.
CREATE A MIXED CONDITIONAL SENTENCE ABOUT MISSING A FLIGHT AND NOT VISITING A LANDMARK IN THIS MOMENT.
POSSIBLE RESPONSE: If I hadn't missed the flight, I would be visiting the Eiffel Tower now.