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. This is used with singular or uncountable nouns (i.e. this egg or this music). These refers to plural nouns (i.e. these cookies).

We use this/that/these/those to explain what we are talking about. We sometimes use them with nouns and we sometimes use them on their own. We use this (singular) and these (plural) to talk about things close to us, and that (singular) and those (plural) to talk about things at some distance away from us.

This is used to describe a singular countable noun and these is used with plural countable nouns. A countable noun has a plural form such as books, girls, boys, toys, etc. These books belong to the public library. …

You used the singular word “arrival”. Thus a singular verb and pronoun are called for. If you were talking about multiple arrivals, you would say “these are”. Like, “These are arrivals that occurred during 2014.”

In English, “information” is an uncountable noun. Even though “information” refers to a collection of facts, it is treated as singular. “These” is used with plural nouns, so “these information” is incorrect. Use “this information” instead.

The Bottom Line. The idea that theirs needs an apostrophe comes out of the fact that on virtually every other word, ‘s indicates possession, so English speakers sometimes think theirs should be spelled their’s. However, this is always incorrect – theirs is the only correct spelling.

1 : that which belongs to them —used without a following noun as a pronoun equivalent in meaning to the adjective their. 2 : his or hers : his, hers —used with an indefinite third person singular antecedent I will do my part if everybody else will do theirs.

pronoun. a form of the possessive case of plural they used as a predicate adjective, after a noun or without a noun: It is theirs.

Why Do People Dislike a Singular “They” or “Their”?

Singular they is the use in English of the pronoun they or its inflected or derivative forms, them, their, theirs, and themselves (or themself), as an epicene (gender-neutral) singular pronoun. “The patient should be told at the outset how much they will be required to pay.” …