I read in a textbook that certain words in English lose the secondary stress when they appear in a sentence. For example, this female name has both primary and secondary stress according to the dictionary:
Alexandra [ ˌæl ɪgˈzæn drə ]
If I say:
Hey Alexandra [ heɪ ˌæl ɪgˈzæn drə ] do we still keep the secondary stress in the name?
One more question. When we have these greetings: Hi + name or Hey + name
Do we need to put any stress on Hi or Hey, or are they unstressed words? In the context when I see someone and want to greet him or her. Any suggestion would be appreciated. Thank you!