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     start learning
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      if + present simple + present simple   
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      real (first) conditional:   start learning
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      if + present simple + will/going to/can/could/may/might/should + infinitive   
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      hypothetical (second) conditional:   start learning
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      if + past simple + would/could/might/should + infinitive   
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      to talk about a real situation that is always or generally true with a result that always happens   start learning
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      if + present simple + present simple     if + (conditional clause) + (result clause)  
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      to talk about a real possibility in the present or future,   start learning
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      if + present simple + will/going to/can/could/may/might/should + infinitive     if + (conditional clause) + (result clause)  
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      hypothetical (second) conditional     to talk about a hypothetical or unreal situation in the present or future,   start learning
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      if + past simple + would/could/might/should + infinitive     if + (conditional clause) + (result clause)  
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      to talk about a real situation that is always or generally true with a result that always happens     If you pay by debit card, you get 5 percent discount.   start learning
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      use the real (zero) conditional     if + present simple (conditional clause); present simple (result clause)  
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      to talk about a real possibility in the present or future,     If you put in the wrong PIN number, the machine will take your card.   start learning
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      use the real (first) conditional     if + present simple (conditional clause); will/going to/can/could/may/might/should + infinitive (result clause)  
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      to talk about a hypothetical or unreal situation in the present or future,     If Valerie practised more, she could be really good.   start learning
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      use the hypothetical (second) conditional, in the main clause, use might/could     if + past simple (conditional clause); would/could/might/should + infinitive (result clause)  
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     start learning
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      in the main clause, use may/might/can/could/ instead of will   
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      If your card gets stuck, you should ring the number on the machine.   start learning
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      If I were you, I'd leave now.   start learning
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      use were or (informally) was   
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      often with real conditions, where the speaker or writer has real reservations     I'll get a university place providing I pass the entrance exam.   start learning
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      use providing/provided (that), on condition that and, less formally, as long as, to mean if and only if,   
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      I'll arrive at 10 a.m. unless the train is late.   start learning
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      when something is unlikely     Suppose you won the lottery, what would you do?   start learning
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      use suppose/supposing, imagine and, less formally, let's say instead of if   
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     start learning
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      with the appropriate form of the verbs in brackets   
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      If you give me your phone number, I (ask) Pete to call you back.    start learning
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      If you give me your phone number, I'll ask Pete to call you back.   
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      Would you be interested if we (offer) you a free trial?    start learning
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      Would you be interested if we offered you a free trial?   
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      If it (rain), you should wear a waterproof jacket.    start learning
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      If it rains, you should wear a waterproof jacket.   
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      If I arrived a day early, it (give) me the chance to look around.    start learning
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      If I arrived a day early, it would give me the chance to look around.   
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      I'm going to get worried if she (not call) soon.    start learning
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      I'm going to get worried if she doesn't call soon.   
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      If I (be) good with numbers, I could help you with your homework.    start learning
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      If I were good with numbers, I could help you with your homework.   
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      I may go home early if Anna (not be) at the party.    start learning
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      I may go home early if Anna isn't at the party.   
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      You (take up) a sport if you want to be in great shape like me.    start learning
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      You should take up a sport if you want to be in great shape like me.   
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      Underline the correct alternative    start learning
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      I'll tell you (?) you promise to keep it a secret.    start learning
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      I'll tell you provided you promise to keep it a secret.   
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      We won't go (?) they pay our expenses.    start learning
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      We won't go unless they pay our expenses.   
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      (?) you lost your job tomorrow, what would you do then?    start learning
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      Supposing you lost your job tomorrow, what would you do then?   
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      (?) that we have enough time, I intend to visit all of my relatives.    start learning
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      Providing that we have enough time, I intend to visit all of my relatives.   
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      I'm going to leave (?) you stop being aggressive with me.    start learning
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      I'm going to leave unless you stop being aggressive with me.   
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      (?) we met them in the street; how might you react?    start learning
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      Imagine we met them in the street; how might you react?   
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     start learning
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      so that they mean the same as 1-6 above.   
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      I'll tell you provided you promise to keep it a secret.   start learning
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      I won't tell you unless you promise to keep a secret.   
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      We won't go unless they pay our expenses.   start learning
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      We won't go if they don't pay our expenses.   
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      Supposing you lost your job tomorrow, what would you do then?   start learning
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      What would you do if you lost your job tomorrow.   
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      I intend to visit all of my relatives unless     Providing that we have enough time, I intend to visit all of my relatives.   start learning
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      I intend to visit all of my relatives unless we don't have enough time.   
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      I'm going to leave unless you stop being aggressive with me.   start learning
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      I'm going to leave if you don't stop being aggressive with me.   
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      How might you react if we     Imagine we met them in the street; how might you react?   start learning
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      How might you react if we met them in the street.   
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