Tham khảo tài liệu 'the grammar of the english verb phrase part 83', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | III. Factors determining the choice between the two systems 567 8h If as you say this decision will upset I upsets her I will consider changing it. idem 8i We won t do it if it will upset him if we do it . See comment below. In 8a f there is a rather loose syntactic and semantic relation between the two The subclause has a large measure of syntactic independence and is not integrated into the head clause semantically as the latter can be fully interpreted without reference to the subclause. What is expressed in the subclause is the speaker s comment on the head clause situation. This comment is made at t0 not at the post-present situation time of the head clause and it is meant to be interpreted transparently. This explains the obligatory use of the Absolute Future System. In 8g h the Absolute Future System must be used in the conditional clause because this clause expresses a closed condition rather than an open one. That is the future fulfilment of the condition is assumed to be certain at t0. The following is another instance of such a typically echoic closed conditional If you will not be in receipt of a scholarship or Award or if the Award will be inadequate to meet full fees and expenses of your course and your maintenance please state how you propose to meet those fees and expenses. www Finally sentence 8i We won t do it if it will upset him if we do it shows that the Absolute Future System is also the rule in if-clauses that serve as head clause for another if-clause whether overtly present or implied . In this type of conditional whose logical structure is if if q then p then q we have to use the Absolute Future System in what looks like a conditional clause but is really the head clause of another conditional see also above. The reason why the Absolute Future System form will upset has to be used is that syntactically and semantically this clause does not have a head clause establishing a post-present domain the whole conditional means .
