American English

Definition of this determiner from the Oxford Advanced American Dictionary

      

    this

     determiner,pronoun
    determiner, pronoun
    NAmE//ðɪs//
     
    (pl. these
    NAmE//ðiz//
     
    )
     
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  1. 1used to refer to a particular person, thing, or event that is close to you, especially compared with another How long have you been living in this country? Well, make up your mind. Which do you want? This one or that one? I think you'll find these more comfortable than those. Is this your bag?
  2. 2used to refer to something or someone that has already been mentioned There was a court case resulting from this incident. The boy was afraid and the dog had sensed this. What's this I hear about you getting married?
  3. 3used for introducing someone or showing something to someone Hello, this is Maria Diaz (= on the telephone). Jo, this is Kate (= when you are introducing them). This is the captain speaking. Listen to this. Do it like this (= in the way I am showing you).
  4. 4used with periods of time related to the present this week/month/year I saw her this morning (= today in the morning). Do you want me to come this Tuesday (= Tuesday of this week) or next Tuesday? Do it this minute (= now). He never comes to see me these days (= now, as compared with the past).
  5. 5this something of somebody's (informal) used to refer to someone or something that is connected with a person, especially when you have a particular attitude toward it or them These new friends of hers are supposed to be very rich.
  6. 6(informal) used when you are telling a story or telling someone about something There was this strange man sitting next to me on the plane. I've been getting these pains in my chest.
  7. Idioms
    this and that, this, that, and the other (informal)
     
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    various things or activities “What did you talk about?” “Oh, this and that.”
See the Oxford Advanced Learner's Dictionary entry: this