s, es, ies
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s, es and ies change a single thing into many things:one word, two words. If a word ends in s, x, ch or sh then add es; if it ends in f it becomes ves (thief to thieves) unless it is roof (roofs).
s, es and ies change a single thing into many things:one word, two words. If a word ends in s, x, ch or sh then add es; if it ends in f it becomes ves (thief to thieves) unless it is roof (roofs).