Do both of them become plural when they are complex
No, only the latter noodles become plural
What size bowl of nouns do you like?
Noodles makes a bowl of noodles in the plural
A bowl of noodles has many noodles
Of course, when your bowl of noodles is made up of a very long noodle, you can use the singular
When it refers to a particular noodle, it can be singular
Here are some English sentences in the form of subject + predicate + subject + predicate + predicative
First, the second structure should be called the main table
Take a simple example
The predicate verb in the first sentence should be intransitive, such as I laugh, she iscrying
She is ill, the weather is fine