bear /beə(r)/ DJ /ber/ DJ US /bir/ KK US
pear /peə(r)/ DJ /per/ DJ US /pir/ KK US
there /ðeə(r)/ DJ /ðer/ DJ US /ðir/ KK US
where /weə(r)/ DJ /wer/ DJ US /wir/ KK US
here /hiə(r)/ DJ /hir/ DJ US /hir/ KK US
dear /diə(r)/ DJ /dir/ DJ US /dir/ KK US
hear /hiə(r)/ DJ /hir/ DJ US /hir/ KK US
year /jiə(r)/ DJ /jiː(r)/ DJ /jir/ DJ US /jir/ KK US
综上,这些单词都有 /ir/音节,因此归为一类~