What is the difference between this is and that is?

This is a pronoun and determiner used to identify someone or something near to the speaker. That is a pronoun and determiner used to identify someone or something at a distance to the speaker.

What is the difference between works and work?

These sentences are almost identical but work implies all of it, and works implies that you have some particular pieces in mind.

What is the difference between it is and it has?

The short form of it is is it’s. But it’s can also mean it has. Likewise, he’s can mean either he is or he has.

Is it work or is it working?

“It works”, applied to any inanimate object is probably the more common expression for the basic meaning, that the device is able to function (not broken). “It is working” is probably meant to imply something in addition to the basic meaning.

What is the difference between this that these those?

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.

What is the rule to use a or an?

The two indefinite articles in English are a and an. The indefinite article an is used to make pronunciation easier when reading a text aloud. The general rule is to use a when the indefinite article precedes a word beginning with a consonant sound and an when it precedes a word starting with a vowel sound.

Which is correct working in or working at?

You work in a type of place such as a bank, shop, or factory: She works in a library. You work at a particular place or organization: She works at the Library of Congress.

Are you working today meaning?

“Are you working today” means “are you going to work today” or “are you at work right now” depending on the context. The answer could be, “Yes, I’m on my way to the office right now!” or “Yes, I’m here now.” Since some people have home offices, it can also mean are you working at home today.

Is it and it difference?

“It is” is used to start any normal sentence. For e.g.= “It is a ball.” “Is it” is used to start a question.

How it works or how does it work?

The question asked is, “Will you tell me _?” ‘How it works’ is just that part of the sentence which goes into the blank, as an assertive phrase. ‘How does it work’ is what you’d say while asking somebody about the way it works. This construction is used in interrogative sentences.