this
determiner, pronoun /ðɪs/
  /ðɪs/
(plural these 
Idioms  /ðiːz/
  /ðiːz/
)- 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?
 
 - 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?
 
 - used for introducing somebody/yourself
- Hello, this is Carlos Diaz (= on the phone).
 - (North American English) Is this Maria? (= on the phone)
 - (British English) Is that Maria?
 - Jo, this is Kate (= when you are introducing them).
 - This is the captain speaking.
 
 - used for showing somebody to something or calling somebody's attention to something
- Do it like this (= in the way I am showing you).
 - Listen to this.
 
 - 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).
 
 - this 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.
 
 - (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.
 
 
Word OriginOld English, neuter of thes, of West Germanic origin; related to that and the.
Idioms 
this and that | this, that and the other 
- (informal) various things or activities
- ‘What did you talk about?’ ‘Oh, this and that.’
 
More Like This Alliteration in idiomsAlliteration 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 wane