The YUNiversity on Twitter: "“Bacteria” 🔬 and “criteria” 📋 are PLURAL nouns. Their SINGULAR forms are “bacterium” and “criterion,” respectively. #grammar https://t.co/eyABjSj2d5" / Twitter
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11 Nouns That Only Have a Plural Form | Quick and Dirty Tips
Singular, Plural, Possessive, and Collective Noun Unit & Activities