Why do we add S to some words but ES to others? And when a word ends with Y, how do we know whether to change the Y to I before adding the plural suffix? And why on earth does knife become knives? You can unravel these mysteries with six simple rules.

Why do we add S to some words but ES to others? And when a word ends with Y, how do we know whether to change the Y to I before adding the plural suffix? And why on earth does knife become knives? You can unravel these mysteries with six simple rules.

Phrasal verbs about money! A great way to remember phrasal verbs is to connect them with interesting topics.

Phrasal verbs about money! A great way to remember phrasal verbs is to connect them with interesting topics.

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