E20.13
Sounds of American English
E20.15
American Readings - Utterance Discrimination --
Absence or presence of "a" (uh); Contrast of "a" and "the"; contrast of "there's a" and "it's a"; unstressed and stressed "some"
E20.16
Essential Idioms of American English
Continued
E20.17
Some Idioms in English --Dixson