1. If you heat water to 100°C, it boils. When the sun comes up, it gets light. If you dont pay your VISA bill on time, the bank charges you interest. If + subj. + present simple, subj. + present simple. Zero conditional present time always true/fact every time IF

2. If I have enough money, Ill buy a nice car. If + subj. + present tense, subj. + will + base form. First conditional present/future time possible/likely/true/real IF

3. If I dont pass Level 3, I will not sit IELTS. Unless = If not present/future time always true/ possible/likely/true/real UNLESS If I pass Level 3, I will sit IELTS. Unless I pass Level 3, I will not sit IELTS.

4. Unless I feel really tired, I will do my homework. Unless + subj. + present tense, subj. + will + base form. Unless = If not present/future time always true/ possible/likely/true/real UNLESS Unless I drink coffee, I get a headache. Unless + subj. + present tense, subj. + present simple.

5. Unless = If not present/future time always true/ possible/likely/true/real UNLESS If I drink coffee, I have energy. If I dont drink coffee, I dont have energy. Unless ____________________________________ I drink coffee, I dont have energy. If I sleep for 8 hours, I will feel good. If I dont sleep for 8 hours, I dont _______________ Unless ____________________________________ feel good I sleep for 8 hours, I dont feel good.

6. Unless = If not present/future time always true/ possible/likely/true/real UNLESS If I dont eat healthy food, my weight will increase. Unless ______________________________________ I eat healthy food, my weight will increase. If I dont do my homework, I will not learn.. Unless ______________________________________I do my homework, I will not learn. Make your own sentences. Unless I get married, ___________________________ Unless I get a passport, _________________________ Unless I get a drivers license, ____________________

7. If/Unless Practice http://www.usingenglish.com/quizzes/23.html http://www.tolearnenglish.com/exercises/exerci se-english-2/exercise-english-45666.php http://www.englishexercises.org/makeagame/ viewgame.asp?id=2589 GOOD LUCK

8. A: Some of these conditional sentences are correct, but some have mistakes. Find the mistakes and fix them. 1)I wont lend you any money unless you promise to pay me back quickly. 2)If you dont give plants enough water, they die. 3)If I will see my friend today, Ill give her your message. 4)If I have time Ill go to the supermarket for some fresh vegetables. 5)You would get sick if you dont eat healthy food. 6)If the weather is nice, we will go for a picnic. 7)I will ask you for help if I have any problems. 8)Ill be happy if I got 6 in IELTS. 9)Ill eat lunch outside unless if its not hot. 10) If you jump into a tigers cage at the zoo, it eats you. get will will eat

9. B: Look at the following two sentences. Which one is more certain? 1)When I get 5 in IELTS, Ill study my major. 2) If I get 5 in IELTS, Ill study my major. C: Complete the gaps in the following sentences with if or when. 1._______ this class finishes, well go to the library. 2._______ I get sick tomorrow, I will stay at home. 3.Ill go to the ILC ______ this class finishes early. 4.______ the sun comes up in the morning, it gets light. When If if When