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Hi Guys! I'm Arnel and today we're going  to look at the four conditionals plus mixed conditionals. Okay I'm going to begin with  a general overview of the conditionals   and I will get more specific as  the lesson continues. In English, we   have four conditionals 0 1 2 and 3 plus mixed  conditionals. Each conditional has an IF clause comma and a main clause. The IF clause gives us a condition.  When I say condition, I mean situation,   and the main clause gives us the result. The zero and the first conditional express   real possible conditions and results,  the second and third conditional express   impossible, hypothetica,l unreal conditions and  results. Mixed conditionals are a combination   of the second and third conditional. So, I  know it looks like a lot of information   but by the end of this lesson you'll feel a lot  more confident and comfortable with conditionals.   So, let's begin let's begin with the zero conditional. Condition | Result   if plus present simple present simple. We use the  zero conditional to express real conditions and   results that are always the same. Same in the past,  same in the present, same in the future. For example, here I have two trees - If the wind blows, the  trees move. If plus present simple / present simple.  This is real because wind always moves  trees right. This will will never change.  So you can move the clauses  around and there's no difference.   Maybe there's a little  difference, a mini difference.   In writing, if your IF clause comes first ,add that  comma. If your main clause comes first you don't   need a comma. So throughout this lesson you'll  see I'll kind of change things up. I'll start with   the IF clause, I'll start with the main clause just so you know both ways are absolutely fine. If I drink coffee after 3 PM, I don't  sleep at night. IF plus present simple /   present simple. This is always true for me. It's  always the same. Same in the past, same in the   present, same in the future. I don't sleep at  night if I drink coffee after 3 PM. Same thing. Now, imagine you're giving  someone a tour of a building.   If you push this button, the lights come on. You can  see, this is always going to be the same, it's never   going to change. This button will never do anything  else. Imagine the zero conditional as a person...   This person would be Miss Obvious. She  would tell you everything you already know.  For example.... Hey Arnel! Yeah? I have  something really interesting to tell you.   Okay.... If you leave ice cream  in the sun,... yeah... it melts. Yes, yes it does. People get hungry if they don't eat. So you can see the zero conditional  is very good at expressing things   that are always true things that never  really change. When you get home, call me.   If Phil calls, don't answer the phone. If  you accidentally drop some trash, pick...