this : Idioms & Phrases
Index
in this
- 
       adverb (formal) in or into that thing or place
       
       
 therein; in that.
 - they can read therein what our plans are
 
WordNet
In this connection
- in connection with this subject. A phrase objected to by some writers. 
Webster 1913
this evening
- 
       adverb during the night of the present day
       
       
 tonight; this evening.
 - drop by tonight
 
WordNet
this night
- 
       adverb during the night of the present day
       
       
 tonight; this evening.
 - drop by tonight
 
WordNet
To put this and that  (or two and two ) together 
- to draw an inference; to form a correct conclusion.
Webster 1913
What of this ? that?  it?  etc.
- what follows from this, that, it, etc., often with the implication that it is of no consequence. "All this is so; but what of this, my lord?" Shak. "The night is spent, why, what of that?" Shak.