When do you use this or these in a sentence?

Use this to refer to one thing in a sentence.

Use these when referring to more than one thing in a sentence.

For example:

• This Apple is the only one left.
• These papers are very well written.
• I do not like the writing in this paper.
• This is a very good book.
• These are very good grapes.

See the related link(s) below for more information