Final answer:
The sentence 'Mrs. Jackson gave Susan a sweater.' follows a ditransitive verb pattern with a subject, a ditransitive verb, a direct object, and an indirect object.
Step-by-step explanation:
The sentence pattern in "Mrs. Jackson gave Susan a sweater." is called a ditransitive verb pattern. It consists of a subject (Mrs. Jackson), a ditransitive verb (gave), a direct object (a sweater), and an indirect object (Susan). The subject initiates the action of the verb, the verb represents the action, the direct object is the recipient of the action, and the indirect object is the beneficiary of the action.