Tham khảo tài liệu 'the grammar book teacher course part 80', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Chapter 27 Conditional Sentences 555 Thus it appears that we have isolated a context in which the if clause is usually not in initial position. We will discuss some other cases below in the section on use where ordering of clauses seems critical. Whether. or Not Thus far we have examined sentences in which the adverbial subordinator indicates that the condition is unmarked exclusive emphatic negative or exclusive and negative 1 will stay home if it rains unmarked I will stay home only if it rains exclusive 1 will stay home even if it rains emphatic I will stay home if it doesn t rain negative I will stay home unless it rains exclusive negative English has yet another adverbial subordinator whether. or not which indicates that the condition can be explicitly eliminated from playing any role in determining the outcome expressed in the result clause. Thus we can refer to such cases as irrelevant conditions I will stay home whether or not it rains. Our reason for indicating the potential separation of whether and or not in irrelevant conditions is that with short conditional clauses the or not may also occur at the end of the clause separated from the whether I will stay home whether it rains or not However the longer the clause the less preferred such a separation becomes l will stay home whether Professor Dickinson agrees to give the graduate students a lecture on plasma physics or not Related Verbs Hope and Wish The verb hope is similar to future predictive conditionals in that the same clauses that follow hope can also function either as the if clause or the result clause of a future conditional. For example I hope that John finishes his work. John will come. If John finishes his work he will come. Both of these sentences imply that it is possible that John will finish his work and that he will come. The verb wish on the other hand is similar to counterfactual conditionals in that the same clauses that follow wish can also function either as the if clause or the .
