Is these two correct?

“These two” is correct because two is a plural, as you say. The only sensible exception I can come up with is in a very specific verbal discussion. A signwriter is having trouble deciding how to write a numeral, so he calls a colleague over.

How do you use these correctly?

This is used with singular or uncountable nouns (i.e. this egg or this music). These refers to plural nouns (i.e. these cookies). When the noun is omitted after this and these, they become pronouns (i.e. turn this off when you leave). Demonstratives are words we use to indicate nouns in a sentence.

Which is correct on this or in this?

English speakers usually face confusion in using prepositions like ‘in’ and ‘on’. We use the word ‘in’ when we talk about a situation in which something is enclosed by something else. On the other hand, ‘on’ is used to talk about a situation when the object is placed above or outside something else.

Is it these two or two?

‘These’ is the plural version of ‘this. What is this? 2. ‘Those’ is the plural version of ‘that’.

Which is correct on this matter or in this matter?

In general, either is correct, both meaning “in regard to this matter.” Often the preceding wording suggests a preference, as in, e.g., “I would like to have your opinion on this matter.” But, on the other hand, “I’m not sure how to proceed in this matter.” Sentences often begin, “In the matter of …,” and this is NOT …

Which is correct on this day or in this day?

On this day. That would generally be correct, but there are some exceptions, such as “In this day and age …” It is always best to provide full sentences so we can better assess what you mean.

Is it correct to say “what I am doing?

On the other hand, “What I am doing” is formulated in the affirmative form so it belongs in a larger sentence, where it is what is called in grammar, an object. Saying “What I am doing” in the middle of nowhere sounds like a sarcastic answer to the question “What are you doing?”, at best. It depends on what it is you want to say.

What am I doing in the middle of the nowhere?

Saying “What I am doing” in the middle of nowhere sounds like a sarcastic answer to the question “What are you doing?”, at best. It depends on what it is you want to say. If you are asking a question, you have to put the auxiliary before the subject, so the sentence is “What am I doing?” and it means you’re questioning yourself.

What does can you explain it to Me Mean?

Can is generally used to comment on the capability of a person to perform a task. So, when you ask “Can you explain it to me?”, you are basically asking whether the opposite person is capable of explaining something. Could is a safe option and is more polite, so always go for could.