Is there are followed by plural and there is followed by singular? Let me take a look at this example. There is some milk in the cup. Why is it used to represent the plural? It should be there are. How is there is? There is some water in the bottle If you know, please tell me. Thank you

There is some milk in the cup and there is some water in the bottle
Milk and water are both liquid and uncountable nouns, which can be preceded by some, but the verb be must be singular is
In short, there are followed by plural, there is followed by singular or uncountable nouns

What's the plural and singular of they, is, are

Unit3.This is my sister.
Sentence pattern: 1, is this your sister? No, it isn't
Is she your sister?No,she isn’t.
2,This is my friend.
These are my friends.
That is my brother.
Those are my brothers.
3,Thanks for the photo of your family.Here is my family photo.
photo of your family = your family photo
Grammar: countable nouns singular to plural: in general, add s, book books, add es ending with s, x, SH, ch
Watch watches ending with a consonant letter and y, change y to I, and then add es boy boys, family families ending with O, living plus es, inanimate plus s, tomato tomatoes, photo photos
Unit3 This is my sister.
1. Phrases
　　1.thanks for (sth/doing sth)
　　2.pen friend/pal
　　3.family photo
　　4.take a photo
Sentence patterns / grammar points
　　1.Is he your friend?
　　2.This/That is my sister.
　　These/Those are my brothers.

English: here is the plural. Why is the relative word of attributive clause used?
this is more difficult than the( arts which) involve appreciation of flat forms

Which has nothing to do with the singular and plural!
It only refers to things, not people. We look forward to your further questions

Is this your pencil
Is this my pen?
Is that his book?
Is that her eraser?
And these?

These are your pencils.
These are my pens.
Those are his books.
Those are her erasers.

This is a pencil case

These are pencil boxes

This is my pencil

Are these his books?
This pencil is mine

This is my pencil case

These are our pencil cases.

This is my pencil. It's his backpack

These are my pencils.
They're his backpacks.

"She is my new friend."?

They are my new friends.
I've been outdone again,

Is she your friend

Are they your friends?
The singular and plural should be consistent
Ask again if you have any questions
The watchtower owner adopted it

Is there are followed by plural and there is followed by singular? Let me take a look at this example. There is some milk in the cup. Why is it used to represent the plural? It should be there are. How is there is? There is some water in the bottle If you know, please tell me. Thank you