a simple sentence, the predicate of which is the verb can (with negation) in the present or past tense, depending on the form of the infinitive (imperfect or perfect) :: But the war can`t last forever.can`t have been a real gardener, can he [12,3] ? the absence of negation, the combination of a verb can with the infinitive in English corresponds to the combination of the verb can in the appropriate time with the infinitive.form could with negation means the assumption relating to this time and made much more carefully than in the use forms can; the combination could with negation expresses doubt that the action (or state) can occur (if the imperfect infinitive), or was (perfect infinitive) .: She is married.- Married! .. But to whom?- To an English lawyer.- But she could not love him?
It was a little gold watch that could not have cost more than ten pounds [11,4] pound verb form could with negation in the value assumptions matches in the Russian language simple or composite (non-modal) verb preceded by the word hardly raquo ;, or composite modal predicate with the verb can in the form of the subjunctive mood ( could ) or the form of the past tense ( was not able ) depending on the form of the infinitive.the verb need is the modal value, it operates in negative sentences and in combination with negation means a requirement that the action (or state) takes place in the present, will occur in the future (when the imperfect infinitive) or occurred in the past (perfect infinitive) .: It needn`t take you very long.verb need in the value assumptions used are quite rare, though, and can be found both in art and in the scientific literature (mainly Humanities) .modal predicate with the verb need with negation in the sense of assumption corresponds in English a simple predicate expressed by the verb in the present, future or past tense (depending on the form of the infinitive), preceded by the words not necessarily or a combination of the words not necessarily and the infinitive [8] .word in the Dictionary of linguistic terms is defined as a word that has lost its specific lexical meaning and functioning as a means of descriptive expressions of modality .grammar Belyaeva, MA gives the following definition:" modal words are words that Express subjective attitude of the speaker toward the suggestion in the proposal thoughts.words are the part of speech to which are immutable words expressing a subjective attitude of the speaker to Express thoughts. Regarding the form in modal words are not developed in any single external sign. However, two other features - semantic and syntactic - presents quite clearly that makes many linguists to talk about modal words, as an independent part of speech. Semantic characteristic of modal words is their value is subjective attitude to the statement from the point of view of its reliability, predpolozitelnoi or desirability. In regards to the meaning of the modal words differ significantly from other important parts of speech, performing nominative function; however, the independence of the values ??they certainly are memorable, and not to the service parts of speech.syntactic function of modal words - function induction member suggestions or significantly less words.words can function as words, similar words-sentences approval and denial Yes and No. However, the words offer Yes and No never change their status, whereas the modal words can be words, sentences (in the dialog) or to be the introductory words in the sentence.L. C. Barkhudarov says that the proposal modal words always play the role of an introductory members of the sentence. HP Barkhudarov also provides a definition of modal words as words that have meaning only to inform you of the fact from the point of view of probability, possibility, connection with other facts, events, etc.addition, professor LC Barkhudarov notes that not every word that acts as an introductory member suggestions, belongs to the class of modal words. Modal words is a special part of speech, as well as introductory members can act and other parts of speech and words combinations: adverbs, prepositional momentum, infinitive constructions, etc. To modal words as parts of speech are only words, which are always, in all cases used in the role of an introductory member suggestions. These words are characterized by their immutability and limited compatibility with other words [3] .modern English there are grammatical and lexical means of expressing modality. Grammatical means are modal verbs like must, should, ought, will/would, can/could, may/might, need. Moreover, these verbs weaken its initial value, desirability, of obligation, necessity, etc., and transmit only the relation of the speaker to the content of the assumptions in General. Modal verbsconvey different shades of modality, starting with the assumption bordering on certainty and ending with the assumption in which the speaker is n...