清辅音后读|s| park-parks pen-pens book-books
浊辅音和元音后读|z| photo---photos piano---pianos radio---radios car-cars bag-bags
后面加es的就读|iz| bus-buses watch-watches box-boxes wife-wives knife---knives wolf---wolves thief-thieves shelf-shelves
清辅音后读|s| park-parks pen-pens book-books
浊辅音和元音后读|z| photo---photos piano---pianos radio---radios car-cars bag-bags
后面加es的就读|iz| bus-buses watch-watches box-boxes wife-wives knife---knives wolf---wolves thief-thieves shelf-shelves