6种。1.直接加est。2.去e加est。3.双写加est. big biggest got hottest fat fattest thin thinnest slim slimmest wet wettest. 4.去y加iest。如:happy happiest.5.三个元音以上(多音节)的如下:interesting more niteresting the most interesting.6.特殊:good the best bad the worst little the least many(mach) the most far the furthest 纯手打的,望采纳