They'resometimesthewillofdooronestimating, but I thinkitisasimportantascorrectpronunciationbecausetheintonationandrhythmofflanguagechangedhowwordstopronounceandaccentuated, andthebestwaytolearnintonationandrhythmisshadowing.
日本語ではこんな感じ
When I wasinBelgium, I didshadowingatleastonehour a day, andas a result, myEnglishpronunciationchangeddrastically.
Andas a learningmaterial, I wouldrecommendTedtalkbecausetheyhave a lotofinterestingvideoswithEnglishsubtitleswhichwewillbakeyourshadowingmuchmorefunthaneasier.
(日本語のイントネーション)
Sothisisprettymuchwhat I didtoimprovemypronunciation.
みたいになります
Theremightbebetterwaytoimproveyourpronunciationandam I not?