1.Wearehappymice,weareverynice.
名词变为复数时改变内部母音字母。mouse→mice
2.Therearetwosheeplivinginthishouse.
3.Therearetwodeerlivinghere.
4.Therearetwooxenlivinghere.
5.Theremustbelotsofbacteriainhere.
有些外来语保留原来的复数形式。bacterium→bacteria
6.Ah,myteethache.
名词变为复数时改变内部母音字母。tooth→teeth
7.Thereareseveralmenandwomencomingtowardsus.
名词变为复数时改变内部母音字母。man→men;woman→women
8.Therecometwochildren.
名词变复数时加字尾en或ren。child→children
9.Ah,mybothfeethurt.
名词变为复数时改变内部母音字母。foot→feet