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This and these are used in different ways when you are referring to people, things, situations, events, or periods of time. They can both be determiners or pronouns. This, that, these and those are demonstratives. We use this, that, these and those to point to people and things. This and that are singular. These and those are plural. We use them as determiners and. Answering these questions has pushed scientists and technology companies toward quantum materials, whose behavior is governed by physics at the smallest scales. Building these advanced materials. This and these are demonstratives, which means they indicate a specific noun in a sentence. The two words are similar because they refer to nouns that are near in space and time. Definition of these in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

How's your mother doing these days? These definition: <a>This.</a>. These are the simple rules you have to follow. I have always wanted to own books like these. Generally speaking, we use this / these to refer to people and things, situations and experiences that are close to the speaker or very close in time. We use that / those to refer to people and things,.