In layman's term, flash-forward is when events sequences in a story are interrupted by the insertion of an event that will happen in the future.I think one way it affects the plot is that the reader or viewer are seeing an event that will happen in the future. Typically authors don't allow the readers to do that because they want to add suspense but I think having flash-forward in a way can create suspense as well. Readers get a glimpses of what's going to happen but they aren't sure exactly when those events will come to play
Something that would get in the way would be A. Obstacle.
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Have more cops and there should be a bigger fine so they get afraid to drink and drive.
It can expand your vocabulary. context helps understand what’s happening without it being there.
reading helps you in all subjects. biology- helps you understand what your reading.
math- word problems
history- helps you fully understand what happened.
writing: helps you learn new words.