tailieunhanh - The grammar of the english verb phrase part 105

Tham khảo tài liệu 'the grammar of the english verb phrase part 105', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | I. Adverbial before-clauses 721 I will be glad if my son is already feeling somewhat better before he has attended half of the prescribed therapy sessions. A patient admitted to hospital in pursuance of an application for admission for assessment may be detained for a period not exceeding 28 days beginning with the day on which he is admitted but shall not be detained after the expiration of that period unless before it has expired he has become liable to be detained by virtue of a subsequent application order or direction under the following provisions of this Act. www unless he has become liable . before it has expired Another case in which both the head clause and the before-clause use a relative tense is illustrated by the following The thief will have left the building before the police arrive I have arrived . This is special only in that the tense of the head clause is not a pure relative tense but an absolute-relative one see . In section . f we have pointed out the existence of examples like the following It will be another week before you will be able to return to full physical activity. www The past time-zone counterpart of such sentences uses two relative tense forms People said that without her humour and skill it would have been a long time before women would have been given the vote. www A final case in which both clauses use a relative tense would seem to be exemplified by the following This hawk had no chance of survival on its own but would have suffered for many days before death would have come from dehydration and starvation. www It should be noted however that the conditional perfect is not used as a tense form here expressing no more than temporal relations but is used twice as a modal form expressing counterfactuality. This is not a type of sentence then in which both the head clause and the before-clause use a relative tense form. Relative tense in head clause and absolute tense in before-clause In we

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