Saturday, 8 May 2010

When and if


  1. We use if to say that we are not sure whether something will happen



  • I'll see you in August, if I come to New York

  • (perhaps I'll come to New York; perhaps I won't)



  1. We use when to say that we are sure that something will happen



  • We use you in August, when I come to New York.

  • (I'm sure I'll come to New York)



  1. We can use both if and when to talk about things that always happen.

  2. There is not much different of meaning



  • If/When you heat ice, it turns into water

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