Conjugate the verb SOLLEN Sollen is a MODAL VERB. It is the 2nd element in the sentence. An action verb is required. The action verb is located at the end of the sentence or clause in its INFINITIVE FORM. Tools See a list of terms used in these activities. Matching Flashcards (Java / non-Java) Concentration Word Search Activities created by: Ed Curtis This activity was created by a Quia Web subscriber. To learn how to make your own, just like this, click here.