The scene I will be using as an example of continuity is the train scene from Duel. This scene uses a lot of continuity edits, but in particular mostly cut in/match on action shots and shot reverse shots.
In the beginning extreme long shots are used to showcase the setting (a train track). To start the action, a shot reverse shot is done to get the initial reaction of the main character when the truck hits his car for the first time. We see him being jolted by the hit, then a cut to the front of the truck against his car, and then back to the main character as he begins yelling.
From then on, there are a lot of cut-in shots, which are used in multiple different ways. For one, we get shots close to the car window so we can focus on the main character, and then cuts to longer shots that allow us to see the rest of the car. This allows us to see what is going on both with the main character and outside of the car, where the truck is hitting. It is also used to get a close up of the certain areas of the car being affected. For example, a long shot is done on the car, then a zoom in onto the wheels which are being pushed towards the train. This helps the viewer understand the truck’s intentions of pushing him into the moving train.
We see a lot of shots of the main character also turning around, or looking outside his window, to then immediately cut to the truck hitting him, his car wheels struggling to move the car, or the train getting closer, and then back to his face (shot reverse shots).
Overall these continuity shots help the viewer understand the intentions of the truck driver and the dangerous situation the main character is in.