ewe / yew / you are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
ewe: (noun) a member of a people living in southern Benin and Togo and southeastern Ghana. (noun) a Kwa language spoken by the Ewe in Ghana and Togo and Benin. (noun) female sheep.
yew: (noun) wood of a yew; especially the durable fine-grained light brown or red wood of the English yew valued for cabinetwork and archery bows. (noun) any of numerous evergreen trees or shrubs having red cup-shaped berries and flattened needlelike leaves.
you: NA
ewe: y·UW
yew: y·UW
you: y·UW
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)