THE VERB: ASPECTIt is but natural that the verb should take up as much, or indeed, more space than all the other parts of speech we have so far considered, put together. It is the only part of speech in present-day English that has a morphological system based on a series of categories. It is the only part of speech that has analytical forms, 1 and again the only one that has forms (the infinitive, the gerund and the participle) which occupy a peculiar position in its system and do not share some of the characteristic features of the part of speech as a whole. In analysing the morphological structure of the English verb it is essential to distinguish between the morphological categories of the verb as such, and the syntactic features of the sentence (or clause) in which a form of the verb may happen to be used. This applies especially to the category of voice and, to a certain extent, to the categories of aspect and tense as well. The order in which we shall consider the categories of the verb may to a certain extent be arbitrary. However, we should bear in mind that certain categories are more closely linked together than others. Thus, it stands to reason that the categories of aspect and tense are linked more closely than either of them is with the category of voice. It is also plain that there is a close connection between the categories of tense and mood. These relations will have to be borne in mind as we start to analyse the categories of the verb. One last preliminary remark may be necessary here. It is always tempting, but it may prove dangerous, to approach the morphological system of the verb in one language from the point of view of another language, for example, the student's mother tongue, or a widely known language such as Latin. Of course the system of each language should be analysed on its own, and only after this has been done should we proceed to compare it with another. Anyway the assessment of the system of a given language ought not to be influenced by the student's knowledge of another language. Neglect of this principle has often brought about differences in the treatment of the same language, depending on the student's mother tongue. We will begin the analysis of each verbal category by examining two forms or two sets of forms differing from each other according to that category only. 1 This statement is based on the assumption that the noun and the adjective in Modern English have no analytical forms (compare p. 57 and p. 60).
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