Rewrite Using "Unless"
I'll fail all my exams if I don't revise properly.
I'll fail all my exams unless I revise properly.
If I wasn't so tired, I'd go out this evening. (NOT)
Were ___ , I'd go out this evening.
Were I not so tired, I'd go out this evening.
When do we use zero conditional?
General truth, universal truth, habit, etc.
When they leave the house, they turn off the lights.
Zero Conditional
Zero Conditional
You / to smoke / you / to get yellow teeth.
If you smoke, you get yellow teeth.
I wouldn't study English if I didn't need it to get a job.
I wouldn't study English unless I needed it to get a job.
I'll probably go out this evening if I don't get too much homework. (PROVIDED)
I'll probably go out this evening ___ too much homework.
I'll probably go out this evening provided I don't get too much homework.
When do we use first conditional?
Possible situation, cause and effect, etc.
If you have to study for the test, I will help you.
Second Conditional
I / to meet a genie / I / to ask him for my three wishes.
If I met a genie I would ask him for my three wishes.
I can't understand American films if I don't watch them with subtitles.
I can't understand American films unless I watch them with subtitles.
I'd never eat fast food unless I was absolutely starving. (WASN'T)
If ___ , I'd never eat fast food.
If I wasn't absolutely starving, I wouldn't eat fast food.
Explain the difference in formation between zero and first conditionals.
Both clauses present tense vs present if-clause and future main clause
First Conditional
You / to forget my birthday / I / to not speak to you again.
If you forget my birthday, I will not speak to you again.
I'd never get to school on time if my mom didn't wake me up.
I'd never get to school on time unless my mom woke me up.
I'd have watched the movie if I'd known it was on TV last night. (WAS)
Had ___ on TV last night, I'd have watched it.
Had I known the movie was on TV last night, I'd have watched it.
When do we use second conditional?
Imaginary situations, untrue to present, etc.
She would have become a teacher if she had gone to university.
Third Conditional
First Conditional
The weather / to be as sunny tomorrow as it was today / we / to go surfing.
If the weather is as sunny tomorrow as it was today, we will go surfing.
My parents wouldn't have let me go out last night if I hadn't finished my homework.
My parents wouldn't have let me go out last night unless I had finished my homework.
If I should ever get married, I'd want a huge party. (EVER)
Should ___ , I'd want a huge party.
Should I ever get married, I'd want a huge party.
Situation that didn't happen, and imagining the result of this situation.
Would you be very surprised if it snowed heavily next July?
Second Conditional
Third Conditional
I / to not eat so much / I / to not feel sick.
If I had not eaten so much, I would not have felt sick.