Structure of Film Trailers (Todorov's theory)

The structure of a Film usually follows the traditional Todorov's theory. This includes a rather cliche approach to films of all genres which seem to follow the same pattern and the same narrative state. 

1. A State of equilibrium at the beginning, where setting and script is balanced and all is neutral.
2. A disruption of equilibrium by some form of action or surprise out of the ordinary which makes the setting then uncomfortable and unbalanced.
3. A recognition by a character(s) that there has been a disruption and moods are unsettled.
4. An attempt to repair the situation/prevent the disruption from going and further.
5. A re-installment of the equilibrium and things usually turn out okay and the situation is fine again.

However, of course, Todorov's theory doesn't usually occur in film trailers to the fullest as film trailers do not show the ending/conclusion. however the theory is somewhat outlined in Tomboy. The following steps follow Todorov's steps however in unison to the film trailer. 

1. An equilibrium; two young children playing harmlessly 
2. The main character moving into a new environment and seeming quite unsettled and unsure about his surroundings.
3. The recognition; another young child sees the main character 'Mikeal' going to the toilet in the woods, however bending down clarifying he is not a male after all but is a female.
4. Reparation; the mother of Mikeal comforts her son
5. situation ends up being resolved and Mikeal is neautral again as things begin to get better

Tomboy is using the outline of Todorov theory.

The usual trailer structure and lack of resolution  creates a great sense of tension and suspense for the potential viewers and allows them to really want to watch the whole movie which is the whole point of film trailers.