This/This one (close to the speaker)
ko re
これ
That/that one (far away from speaker but close to listener)
so re
それ
That/that one (far away from both speaker and listener)
a re
あれ
This + noun (close to the speaker)
E.g. this pen
ko no + noun
この + noun
e.g. ko no pen
このペン
That + noun (far away from speaker but close to listener)
e.g. that umbrella
so no + noun
その+ noun
e.g. so no ka sa
そのかさ
That + noun (far away from both speaker and listener)
e.g. that bike
a no + noun
あの+ noun
e.g. a no jitenshi
あのじてんしゃ