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              8.1 Labio-Dental Fricatives /f，v/
               基礎(chǔ)科學(xué) 
              
				
              

											8.1 Labio-Dental Fricatives /f，v/圖片（共2張） :
						
              8.1 Labio-Dental Fricatives /f，v/
              
										 
                      Producing /f/1) Raise the soft palate so that no air can escape throughthe nasal cavity;2) Press the upper teeth against the lower lip lightly so thatthe air can be forced out between the teeth and the lower lip;3) Produce the sound by forcing air out thr......（本文共 7161 字, 2 張圖）      [閱讀本文] >> 
               
			  
				 
              
				 
				
				
              
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