In order to speak English clearly and make your speech understandable to your listeners, correct stressing is a factor enhancing your communication efficiency. Stress can be found in word, phrase and sentence levels and it can also imply what you emphasize while speaking.
So, what you need to know now is how to define thought groups in a string of a sentence and where a stress falls in a word, a phrase and a sentence.
These lessons are about thought groups.
http://www.youtube.com/watch?v=dHZIA0-G1sc
http://www.youtube.com/watch?v=nM5AS4XIPSM&feature=relmfu
These lessons are about stress.
http://www.youtube.com/watch?v=WX1rrFh4OZw
http://www.youtube.com/watch?v=rMLym5C3FHo&feature=relmfu
http://www.youtube.com/watch?v=3gOuZxNfynk&feature=relmfu
http://www.youtube.com/watch?v=RZY8MlaYDPA&feature=relmfu
http://www.youtube.com/watch?v=Wbs5aoqFtVQ&feature=relmfu
http://www.youtube.com/watch?v=-toSnwSqqz0&feature=relmfu
http://www.youtube.com/watch?v=lhRgU28n8rc&feature=fvwrel
http://www.youtube.com/watch?v=nwWPUfaqnpE&feature=relmfu
http://www.youtube.com/watch?v=-iZuTehd1c0&feature=fvwrel
http://www.youtube.com/watch?v=FNU2NKW6oQo&feature=relmfu
Learn how to communicate well
Intonation and stress are here. Listen to the clip and try to notice and imitate for your improvement.
http://www.rachelsenglish.com/
The information in this site can help you wrap up what you have learnt about stress.
http://esl.about.com/od/speakingadvanced/a/timestress.htm
