Final answer:
In ASL, declarative sentences do not typically use nonmanual signals and are glossed without a line over the signs, unlike imperative, yes-no questions, and wh-questions which may include specific nonmanual markers.
Step-by-step explanation:
The type of ASL (American Sign Language) sentence that is not typically marked by a nonmanual signal and is glossed without a line over the signs is declarative sentences. Declarative sentences in ASL are similar to their spoken English counterparts; they make statements or 'declare' information, and they end with a period in written form. In contrast, imperative sentences (commands) sometimes include nonmanual signals to convey the directive force of the command, while yes-no questions and wh-questions involve specific nonmanual markers such as raised eyebrows or a forward lean of the body, and their corresponding glosses would have lines over the signs.
Reviewing our reference, an imperative sentence example is “please close the door,” while a declarative sentence example is “The administration canceled classes.” There is no special nonmanual marker or line over the gloss for the declarative sentence, unlike the imperative which may include one for emphasis.