s在清辅音后面读[ s ],desks
s在浊辅音和元音后读[ z ],boys,girls
es在辅音[ s ] [ z ][ t∫] [dз][∫][ з ]后面读[iz ], bridges,watches
bike的以 [ k ]结尾,[ k ]是清辅音。所以读[ s]
s在清辅音后面读[ s ],desks
s在浊辅音和元音后读[ z ],boys,girls
es在辅音[ s ] [ z ][ t∫] [dз][∫][ з ]后面读[iz ], bridges,watches
bike的以 [ k ]结尾,[ k ]是清辅音。所以读[ s]