Mom bought apples, bananas, oranges and pears today.

I looked at the faint sunset in the distance and recalled the past.

3.Xi is not only an ancient capital with a long history, but also a modern city.

Causality:

1, got up late today and missed the plane.

The reason why I didn't come to class was that I was ill.

Gradual:

Grape is not only nutritious, but also has certain medicinal value.

I am not only a good student in my class, but also a good boy at home.

introduce

If there are two concepts at the same level in the same generic concept, then these concepts are parallel. There are two kinds of coordinate relations: compatible and incompatible.

Compatible juxtaposition: if there are several concepts at the same level in the same generic concept, and the extensions of these concepts cross each other, then these concepts are compatible juxtaposition.

Incompatible juxtaposition: If there are several levels of concepts in the same generic concept and their extensions are mutually exclusive, then these concepts are incompatible juxtaposition.