Why do we stress the words, communications homework help

For this assignment we are going to work with pronunciation.  In the context of pronunciation, tell me about stress.  Why do we stress syllables in words or words in sentences? Look at the following sentence …

 

I don’t drive my car that much anymore.

 

Try reading the sentence aloud and stressing a separate word each time.  With certain words stressed, the sentence seems to take on a different meaning.  For example, if I were to stress the word “I” in the sentence, it may mean that someone else may drive the car often.  If I were to stress the work “car” it may mean that I drive my truck . Anyway, you can see what I mean by trying it