Singular or Plural? (Parents are the one who have/has...)

[Jupiter]

Hi teachers,

Which verb should be used?

The one who has to take care his/her children is/are parents.

Parents are the one who have/has to take care their children.

Thanks in advance

Jupiter

[Yankee]

Hi Juptiter

Is there some special reason for using the word one instead of ones in your sentences? Using "one" is totally illogical --- especially in the second sentence!

Here are better (correct) ways to write your sentences:

The ones who have to take care of their children are parents.

Parents are the ones who have to take care of their children.

Amy

[Jupiter]

Hi Yankee,

Thanks for your response.
Actually, there is no any special reason at all, it's just my poor understanding of using the word one and ones.

Can I say the following?

The one who has to breast-feed her children is mother.[b]

Mother is the one who hhas to breast-feed her children.

One is for singular noun and ones is for plural noun, right?

Jupiter

edited a few times!

[Yankee]

Hi Jupiter

Exactly! Your new sentences use one perfectly!
One for singular and ones for plural.

Amy