tailieunhanh - The grammar of the english verb phrase part 92

Tham khảo tài liệu 'the grammar of the english verb phrase part 92', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 630 12. Preterite vs present perfect in clauses with temporal adverbials I stayed I have stayed with the body until the police came. Adv-time up to a past orientation time I know what it means to be in the army. I served I have served during the Falklands war. Noninclusive heterogeneous pre-present-zone adverbials normally combine with the present perfect only I was I have been fascinated by insects from childhood. continuative reading At least a dozen accidents have happened here over the past four years. quantifica-tional constitution reading Nothing much has been done about it over the last three years. indefinite reading Noninclusive homogeneous pre-present-zone adverbials mostly and those of the type for the past I last two weeks exclusively combine with the present perfect but the past tense is sometimes used though seldom in Br. E. to imply a break between the past and the present It has been highly successful in the past and with your support this success will continue. www The profession of a doctor was respectable in the past but today society has changed . www Inclusive pre-present-zone adverbials can in principle combine with either the past tense or the present perfect. The choice of tense depends on the speaker s temporal focus. When did he disappear He disappeared within the last month. focus on THEN. Security awareness has increased significantly within the last year. www focus on NOW Multi-zone temporal adverbials can in principle combine with either the past tense or the present perfect the choice of tense depends on the speaker s temporal focus. I ve been working hard this month. I went to the museum today but it was closed . I have spoken I spoke with Tim today. With s ncc-adverbials the rules are as follows. If the adverb since or a prepositional phrase with since indicates a period up to t0 the clause in which it is used has to be in the present perfect I haven t seen him since I since that night . If .

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