Conversation & Expressing :www.eslgold.com (Best and best good...good)http://eleaston.com/ (Best)Grammar :http://www.englishdaily626.com/ (Best TOEFL Here)http://esl.about.com/cs/pronunciation/Science daily :http://www.sciencedaily.comPhonetic :http://www.uiowa.edu/~acadtech/phonetics/# (best voice)http://www.antimoon.com/how/pronunc-soundsipa.htmhttp://digilander.libero.it/mgraziatundo/english_phonetic_alphabet.htmhttp://pronunciation.englishclub.com/word-stress.htm (learn the stress of the word)http://www.grammarerrors.com/pronunciation.html#aesthetichttp://eleaston.com/materials.html (Listening )http://www.key2speak.com/voices.html (download the software to hear it)Best sound of the sentences and word :http://www.elc.polyu.edu.hk/cill/pronunci.htm#Listen to a word (best to listen the word what we are typing)