I read an interesting article on the web about why native speakers of English sound different.
Here it is –
English is considered a stressed language while many other languages are considered syllabic.
What does that mean?
It means that, in English, we give stress to certain words while other words are quickly spoken. In other languages, each syllable receives equal importance. English however, spends more time on specific stressed words while quickly gliding over the other, less important, words.
You need to understand which words are generally stressed and which ones are not.
Words that get the stress are the nouns, adjectives, verbs and adverbs.
Now, log in to some online sources, listen to how native speakers concentrate on the stressed words rather than giving importance to each syllable. You will soon find that you can understand more because you begin to listen for stressed words. All those words that you thought you didn’t understand are really not crucial for understanding the sense or making yourself understood.
Stressed words are the key to excellent pronunciation and understanding of English.

Aha! A wonderful and useful blog!
Most languages(those used by humans for communication) are “EMOTIVE” in nature and English ,due to its wide usage has , in addition,several unique local “FRAGRANCES” added to give these words/sentences those unique meanings/expressions!
I believe , in written English, we can acheive the same way of expressing a specific attribute to a sentence or stressing as you call it , by the use of CAPTIALS and “” to that stress word. Similarly brackets and ! , ? are all expression characters made for the written form
I am prompted to write about a famous line from a famous literary artist who said that “Languages are groomed in universities but grown in the market(literally speaking i.e. dowmtown area amongst common people)