We use (These) and (Those) with plural nouns like : These cars, flowers , dogs, persons .....
we use These with things we are holding or things that
are close or near to us

Example : I can see these keys on the table
لانها قريبة ويراها علي الترابيزة these يشير هنا الي المفاتيح باستخدام

Example : These shoes are very beautiful ( this means that they are wearing the shoes)
لأن الشخص يرتدي الحذاء ونراه بالفعل these تم استخدام

Example : I saw these dresses before ( i already see the dresses )
يتبعها اشياء/أسماء جمع وجميعها قريبة مننا these نلاحظ ان

We Those with things far a way from us
Example: I like those beautiful flowers there ( the flowers are far away )
those الزهور بعيدة لذلك تم استخدام

Example : Those new persons are nice ( the persons are far from them )
وتعني أن الأشخاص بعيدون عنهم
Those =الأشياء البعيدة عن الرؤية

We can use (ones) with These and those when we are referring to something already mentioned or named

Example : These ties appeal to me a lot . They are better than These ones
( ones replaces ties)
التي تم ذكرها في الجملة التي تسبقها ties هنا تعود الي كلمة ones فكلمة

Example : I did not want to buy tomatoes but i liked those ones
المشار اليها في الجملة الأولي tomatoes تحل محل كلمة (ones)فكلمة