Determiner They are used in front of nouns to indicate whether you are referring to something specific or something of a particular type.The definite and indefinitearticlesa/an/the are all determiners.You use a specific determiner when people know exactly which thing(s) or person/people you are talking about.Determiners include:the articles :a / an / the

demonstratives :this / that / these / those

possessives (aka possessive adjectives):my / your /his / her / its / our / your / their

For example:-"Thedog barked attheboy.""Theseapples are rotten.""Theirbus was late.""Have you seenmykeys?"You use general determiners to talk about how much stuff or how many people or things you are talking about.More general determiners are quantifiers:a fewa littleallanotheranybotheacheitherenougheveryfewfewerlesslittlemanymoremostmuchneithernootherseveralsome

For example:-"Have you gotanyEnglish books I could borrow?""There isenoughfood to feed everyone.""I don't teach onlineeveryday."Numbers act as determiners too, they show how many things or people there are: 1, 2, 3...For example:-"I teach online for3days a week."(http://www.learnenglish.de/grammar/determinertext.html)

Possessive Adjectives.We use possessive adjectives to tell what belongs to someone or to show relationships.The possessive adjectives are my,your, his, her, its, our, and their.

Example 1. My friend Abu has a new cat. His old cat died last week.2. Ahmad hates when somebody touches his car3. The students must bring their certificates tomorrow. 4. Ismail has learned how to ride his motorcycles.5. Be careful, your cat is annoying our neighbours.

Difference between Determiner and Possesive adjectives.Both determiner and possessive adjectives provide additional information about nouns. Possessive determiners (possessive adjectives) have features of bothdeterminersandadjectives. For example,my bicycle impliesthebicycle that belongs to me. Iit is not correct to precede possessives with an article (*the my car) or other definite determiner such as ademonstrative(*this my car).