Did gage use forshadowing in the story the teacher who changed my life ?

no because the story doesn't say about foreshadowing.

whether dad arrives in time for the game depends on his conference. subject

the use of “as” in the example to draw the resemblance. some more examples of common similes are given below. common examples of simile. our soldiers are as brave as lions. her cheeks are red like a rose. he is as funny as a monkey. the water well was as dry as a bone. he is as cunning as a fox. simile introduces vividness into what we say.