त्वरित लिंक्स
English Language
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Read the following four advanced sentences containing complex syntactic structures, sequence of tenses, conditional clauses, and aspectual markers: I. By the time the chief financial officer arrives at the corporate headquarters tomorrow morning, the audit committee will have reviewed the quarterly financial statements and finalized the preliminary compliance report. II. Had the meteorological department issued a severe weather warning earlier, the international flight would not have been diverted to an alternate landing strip. III. The historian argued in his seminal monograph that the Roman Empire has collapsed primarily due to internal economic corruption and overextended military frontiers rather than external barbarian invasions. IV. She spoke with such profound rhetorical eloquence during the parliamentary debate as though she is intimately acquainted with every intricate nuance of the proposed constitutional amendment. Identify the option that correctly evaluates the grammatical, syntactic, and structural validity of sentences I, II, III, and IV according to standard English grammar.
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Detailed Explanation
Sentence I is correct because it uses the future perfect tense ('will have reviewed') to denote an action that will be completed before a specific point in the future ('By the time... arrives'). Sentence II is correct as it properly employs the third conditional structure ('Had the meteorological department issued... would not have been diverted') to express past counterfactual possibility. Sentence III is incorrect because when a past-tense reporting or main clause governs a subordinate clause expressing historical fact, the present perfect ('has collapsed') must shift to the past perfect ('had collapsed') to maintain proper sequence of tenses. Sentence IV is incorrect because expressions introduced by 'as if' or 'as though' denoting unreal or hypothetical states require the past subjunctive ('were' instead of 'is'), even with third-person singular subjects. For a comprehensive overview of how time and action are expressed in English, refer to English verb tenses.
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