Zero and first conditional

Zero and first conditional

1. Zero

   • If / When clause (present simple), Main clause (present simple)
     • This format we use a comma to separate
     • If I arrive home from work late, I am always tired
   • Main clause (present simple) If / When clause (present Simple)
     • I am always tired if I arrive home from work late

2. First

   • IF clause (present simple), Main clause (will + infinitive without to)
     • This format we use a comma to separate
     • If I have a lot of work tomorrow, I'll stay late at the office
   • Main clause (will + infinitive without to) IF clause (present simple)
     • I'll stay late at the office if I have a lot of work tomorrow
   • Unless
     • You won't finish your essay unless you start today