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Билет №16 The use of the Subjunctive Mood in conditional sentences
The Subjunctive Mood is used in conditional sentences to express an unreal condition (in the subordinate clause) and an unreal condition consequence (in the principal clause).
In sentences of unreal condition referring to the present or future the Past Subjunctive of the verb to be is used in the subordinate clause; with other verbs the same meaning is expressed by the Past Indefinite of the Indicative Mood. In the principal clause we find the analytical subjunctive consisting of the mood auxiliary should or would and the Indefinite Infinitive. Should is used with the first person singular and plural; would is used with the second and third persons singular and plural.
An unreal condition referring to the future can also be expressed by the Past Subjunctive of the verb to be + to-Infinitive of the notional verb or the analytical Subjunctive with the mood auxiliary should for all the persons. Such sentences are often translated by means of “если бы случилось так, случись так”.
If in the subordinate clause the mood auxiliary should is used, we often find the Indicative or Imperative Mood in the principal clause.
If any of your family should come to my house, I shall be delighted to welcome them.
In sentences of unreal condition referring to the past the Past Perfect of the Indicative Mood is used in the subordinate clause; in the principal clause we find the analytical subjunctive consisting of the mood auxiliary should (with the first person) or would (with the second and third persons) and the Perfect Infinitive.
If I had consulted my own interests, I should never have come here.
There are two mixed types of sentences of unreal condition. In the first of these the condition refers to the past and the consequence refers to the present or future.
If you had taken your medicine yesterday, you would be well now.
In the second type the condition refers to no particular time and the consequence to the past.
If he were not so absent-minded, he would not have mistaken you for your sister.
Unreal conditions may also be expressed in the following ways:
a) But for the rain, we should go down to the country.
b) If it were not for your help, I should not be able to finish my work in time.
In sentences of unreal condition the modal verbs might and could are often used; they fully retain their modal meaning and therefore they do not form the analytical subjunctive.
Here we have the group 'modal verb + Infinitive' which forms a compound verbal modal predicate, whereas the analytical subjunctive forms a simple predicate.
Would, when used in the subordinate clause of a sentence of unreal condition, is also a modal verb forming with the infinitive a compound verbal modal predicate.
In conditional sentences of real condition naturally the Indicative and not the Subjunctive Mood is used. Such sentences can refer to the present, future or past.
The conjunctions introducing adverbial clauses of condition are: if, in case, provided, suppose, unless and some others.
In case and provided are chiefly used in sentences of real condition. Suppose is more common in sentences of unreal condition. Unless is used in sentences of real and unreal condition; unless has a negative meaning; it corresponds to the Russian если не.
Adverbial clauses of condition containing the verbs had, were, could and should are often introduced without any conjunction. In these cases we find inversion.
Should he come this way, I will speak to him.
The Subjunctive Mood is used in sentences expressing what may be understood as an unreal consequence, the condition of which is not expressed as such.
I suppose you are a stranger in these parts, or you would have heard what happened last autumn.