“What was she thinking?” “I wonder what she was thinking.” “How could he do this?” “I wonder how he could do this.” Did you notice anything different about the structure in each pair? The first sentence is a question that is asked directly. The second sentence transforms...

In your throat, you have a set of vocal folds (or vocal chords).  These folds can either be pulled apart or pushed together when producing speech sounds.  If you pronounce a sound with your vocal folds pulled apart, the sound will be voiceless.  If you...