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IF CLAUSES


        5. Mixed Types of If Clauses

        Yan cümle (if clause) ile ana cümlede (main clause) zaman uyumunun olmadığı koşul cümleleri, “Mixed Type of If
        Clauses” olarak tanımlanır.
        A. Mixed Type 1
                                             lf Clause               Main Clause
                                             (Type 3)                  (Type 2)

                                    Past Perfect Tense                                           Video 7.5
                Mixed Type 1        Past Perfect Continuous Tense  would
                                    Perfect Modals              could   (+V  / + be V )
                                                                           1      ing
                                    (might have V , could have V ,   might
                                               3           3
                                    had had to, etc.)
        Bu tip koşul cümleleri için “present result of a past condition” denilebilir. Bu koşul cümlelerinde yan cümle (if
        clause), geçmişte gerçekleşmemiş bir koşulu ifade ederken, ana cümle (main clause), bu koşulun şimdiki zamanda
        olası sonucunu belirtir.
        Truth: Humanity didn’t take sufficient measures in time to safeguard water resources around the globe. Therefore, droughts
        are at such a severe stage now.
        Conditional: If humanity had taken sufficient measures in time to safeguard water resources around the globe, droughts
        wouldn’t be at such a severe stage now.
        B. Mixed Type 2

                                             lf Clause               Main Clause
                                             (Type 2)                  (Type 3)


                Mixed Type 2        Past Simple Tense               would have V
                                    Past Continuous Tense           could have V  3
                                    Past Modals                     might have V 3
                                    (might, could, had to, etc.)              3


        Bu tip koşul cümleleri için “past result of a present or continuing condition” denilebilir.  Bu koşul cümlelerinde
        yan  cümle  (if  clause),  günümüzle  ilgili  hayali  olasılıktan  bahsederken,  ana  cümle  (main  clause),  bu  durumun
        geçmişteki hayali sonucundan bahseder. Kullanımını inceleyelim:
        Truth: There are space agencies in 72 countries, primarily NASA. Therefore, scientists have been able to make many
        explorations of the outer planet so far.
        Conditional: If there were no space agencies working in 72 countries, primarily NASA, scientists couldn’t have made
        many explorations of the outer planet so far.

        6. Other Conditionals

        “If Clause” yapılarının yerine kullanılabilecek ve koşul anlamı taşıyan başka yapılar da söz konusudur:
            Even if (-sa bile, -sa da)                                                           Video 7.6
           ▪ Even if the company’s profit rate increased by 5%, it wouldn’t be enough to meet our research and development
             needs in advanced communication technologies.
            Only if (şayet, ancak, kaydıyla)

           ▪ You can include these personal inferences in your thesis as proven information only if laboratory studies support
             them. “Only if” cümle başına gelirse, ana cümle devrik yazılır.
           ▪ Only if you become a member through the “e-devlet” system can you enter the national library and benefit from the
             resources.


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