this and these的分別

This - singular 單數
These - plural 重數
意思係 「這個/這些」

e.g. This is an apple
e.g. These are bananas

完全唔關 He She It 事

註：
That - singular 單數
Those - plural 重數
意思係 「那個/那些」

These係for眾數
this係for單數

this 是用於單數
these 是用於眾數
係唔關he she it 事

This boy is naughty.
These boys are naughty.
(This) is for single noun.
(These) is for plural noun.