The convention I was taught is that “This… and that” is quoting someone who pauses after ‘This’, while “This [...] and that” indicates that I elided something. This seems to me both useful and clear.
The convention I was taught is that “This… and that” is quoting someone who pauses after ‘This’, while “This [...] and that” indicates that I elided something. This seems to me both useful and clear.