It could be useful to add audio records for the additional sounds too (at least for the new ones), the pronunciation could seem obvious to native English speakers but someone might have difficulties grasping the difference between the "v" and "w" columns.
It could be useful to add
It could be useful to add audio records for the additional sounds too (at least for the new ones), the pronunciation could seem obvious to native English speakers but someone might have difficulties grasping the difference between the "v" and "w" columns.