These languages have a dual form in addition to singular and plural forms.

The Act provided a dual form of government (a "dyarchy") for the major provinces.

She is depicted in dual form, being both sunlight and shadow, personified.

The dual form is usually used in expressions of time and number.

Many languages also had a dual form for expressing the actions of two people.

The dual forms are only used in very formal Arabic.

In both poems the dual form creates a sort of dramatic element within the poem.

Again, this concept is rarely needed in the dual form.

There are neither dual forms nor inclusive/exclusive distinctions in this language.

Let us not, then, contribute to a dual form of discrimination.