An auxiliary verb is a verb that adds functional or grammatical meaning to the clause in which it appears-for example, to express tense2, aspect, modality, voice, emphases and etc. Auxiliary verbs usually accompany a main verb. The main verb provides the main semantic content of the clause. An example is the verb have in the sentence I have finished my dinner. Here, the main verb is finish, and the auxiliary have helps to express the Perfect aspect. A list of verbs that (can) function as auxiliaries in English are as follows:
Be (am, is, are, was, were, being, been), can, could, dare, do (does, did), have (has, had, having), may, might, must, need, ought, shall, should, will, would. The verb “Be” The verb be can be used an auxiliary and a full verb. As an auxiliary we use this verb for compound tenses and the passive voice. Note that be is irregular verb:
simple verb I am, he, she, it-is, we, you, they-are. simple past I, he, she, it-was, we, you, they-were past participle been They are playing football. He is playing football. He was playing football. He had been playing football. The verb “have” The verb have can be used both as an auxiliary and as a full verb. As an auxiliary we use this verb to form compound tenses in active and passive voice.
He has played football. He had played football. He has been playing football. He had been playing football. The verb “will” and “shall” The verb will can only be used as an auxiliary. We use it to form the future tenses.
He will not play football. He will have played football. The verb “do” The verb do can be both an auxiliary and a full verb. As an auxiliary we use do in negative sentences and questions for most verbs (except not for be, will, have got and modal verbs) in Simple Present and Simple Past.
He does not play football. He did not play football. 1.3. Notional verbs Notional verbs (Main verbs) are those which have full lexical meaning of their own: buy, eat, do, give, go, live, love, make, permit, push, see, study, take, try, understand, write. Main verbs express an action (give, study, take) or a state (love, see, exist). Main verbs can be characterized from different sides: transitive or intransitive, action or state verbs, regular or irregular verbs. Phrasal verbs are verbs that form an idiomatic phrase with a postposition (give up, turn off, write down).
From the point of view of their meaning verbs fall under two groups: notional and functional.
Notional verbs have full lexical meaning of their own. The majority of verbs fall under this group.
Function verbs differ from notional ones of lacking lexical meaning of their own. They cannot be used independently in the sentence; they are used to furnish certain parts of sentence (very often they are used with predicates).
Modal verbs are small group of verbs which usually express the modal meaning, the speaker’s attitude to the action, expressed by the notional verb in the sentence. They lack some grammatical forms like infinitive form, grammatical categories and so on. Thus, they do not have all the categories of verbs. They may express mood and tense since they function as parts of predicates. They lack the non-finite forms.
Besides in present-day English there is another group of verbs which are called auxiliaries. They are used to form analytical forms of verbs. Verbs: to be, to do, to have and so on may be included to this group.
Regular and Irregular Verbs From the point of view of the formation of the Past Tense verbs are classified into two groups:
1) Regular verbs which form their basic forms by means of productive suffixes-(e)d. The
majority of verbs refer to this class.
2)Irregular verbs form their basic forms by such non-productive means as:
a) variation ofsounds in the root:
should -would –initial consonant change
begin -began -begun –vowel change of the root
catch -caught-caught-root-vowel and final consonant change
spend -spent-spent-final consonant change;
b)suppletion:
be–was/were
go –went
c)unchanged forms:
cast-cast-cast
put-put–put
By suppletion we understand the forms of words derived from different roots.
A. Smirnitsky gives the following conditions to recognize suppletive forms of words;
1. when the meaning of words are identical in their lexical meaning.
2. when they mutually complement one another, having no parallel opposemes.
3. when other words of the same class build up a given opposemes without suppletivity, i.e. Thus, we recognize the words be - am, bad - worse as suppletive because they express the same grammatical meanings as the forms of words: light – lighter, big – bigger, work– worked.
Transitive and Intransitive Verbs Verbs can also be classified from the point of view of their ability of taking objects. In accord with this we distinguish two types of verbs: transitive and intransitive. The former type of verbs are divided into two:
a) verbs which are combined with direct object: to have a book to find the address
b) verbs which take prepositional objects: to wait for, to look at, talk about, depend on…
To the latter type the following verbs are referred:
a)verbs expressing state: be, exist, live, sleep, die…
b)verbs of motion: go, come, run, arrive, travel…
c) verbs expressing the position in space: lie, sit, stand ...
As has been told above in actual research work or in describing linguistic phenomena we do not always find hard-and-fast lines separating one phenomenon from the other. In many cases we come across an intermediate stratum. We find such stratum between transitive and intransitive verbs which is called causative verbs, verbs intransitive in their origin, but sometimes used as transitive: to fly akite, to sailaship, to nod a pproval ...
The same is found in the construction "cognate object": to live along life, to die the death of a hero ...