21. :The French " normalement " can be translated as the English modal verb " should " in these contexts. 22. Modal verbs are defective insofar as they cannot be inflected, nor do they appear as gerunds, infinitives, or participles.23. A modal verb can serve as the finite verb introducing a verb conditional mood, as described elsewhere on this page. 24. The " will / shall " future consists of the " shall " in the article on English modal verbs . 25. It actually doesn't explain clearly this Sneewittchen scenario with 4 verbs and 2 of which can act as modal verbs . 26. One can note further in this area that English modal auxiliaries are quite unlike modal verbs in closely related languages. 27. If the verbal expression of modality involves the use of an auxiliary verb, that auxiliary is called a modal verb . 28. Distinguishing between the two types of modality can be difficult, since many sentences contain a modal verb that allows both interpretations. 29. Modal verbs in Italian are the only group of verbs allowed to follow this particular behavior, forming so a distinct class.30. When one requires an infinite tense to show mood, he must substitute some sort of periphrase for the modal verb in question.