English

Definition of this determiner from the Oxford Advanced Learner's Dictionary

      

    this

     determiner,pronoun
    determiner, pronoun
    BrE BrE//ðɪs//
     
    ; NAmE NAmE//ðɪs//
     
    (pl. these
    BrE BrE//ðiːz//
     
    ; NAmE NAmE//ðiːz//
     
    )
     
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  1. 1  used 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. 2  used to refer to something/somebody 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. 3  used for introducing somebody or showing something to somebody 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. 4  used 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 somebody/something that is connected with a person, especially when you have a particular attitude towards 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 somebody about something There was this strange man sitting next to me on the plane. I've been getting these pains in my chest.
  7. Word Origin Old English, neuter of thes, of West Germanic origin; related to that and the.Idioms
    this and that, this, that and the other
     
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    (informal) various things or activities ‘What did you talk about?’ ‘Oh, this and that.’ More Like This Alliteration in idioms belt and braces, black and blue, born and bred, chalk and cheese, chop and change, done and dusted, down and dirty, in dribs and drabs, eat somebody out of house and home, facts and figures, fast and furious, first and foremost, forgive and forget, hale and hearty, hem and haw, kith and kin, mix and match, part and parcel, puff and pant, to rack and ruin, rant and rave, risk life and limb, short and sweet, signed and sealed, spic and span, through thick and thin, this and that, top and tail, tried and tested, wax and waneSee worksheet.
See the Oxford Advanced American Dictionary entry: this