1. Pronunciation of the final -s/-es

The final –s is pronounced as [s].

If the final –s comes after [k], [t], or [p] the final –s sounds [s].

Examples: it breaks, he helps, she works.

The final -s is pronounced as [z] if it come after [n], [v], [o:], [g].

Examples: she runs, it moves, he goes, she digs.

The final –es is pronounced as [iz] after [o], [e], [ch], [sh], [s], [z], and [x].

Examples: she watches, he washes, she crosses, it freezes, he fixes.