Tham khảo tài liệu 'focus of present perfect 6', ngoại ngữ, anh ngữ phổ thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 27 When I get there before you leave etc A Introduction Mark Did I tell you I ve got a meeting in Glasgow at nine o clock tomorrow morning I m driving up there overnight. Sarah You re going to drive all through the night You re crazy. You ll be exhausted before you arrive. Why don t you take a train Mark I ll be OK. I ll need the car while I m there. I have to visit some companies in the area. I can sleep when I get home. Study these examples. You ll be exhausted before you arrive NOT before you ll arrive I ll need the car while I m there NOT while I ll be there I can sleep when I get home NOT when I ll get home Each of the sentences has a linking word of time . before while or when. The sentences are about the future about Mark s trip to Glasgow. But after the linking words we use the present simple arrive am get not will We can start the sentence with a linking word. When I get home I can sleep. B Linking words We use the present simple for the future after these linking words of time after as as soon as before by the time until when while. I m starting a job in sales after I finish college. As soon as you hear any news will you let me know I must get to the bank before it closes. They ll have stopped serving meals by the time we get to the restaurant. We also use the present simple for the future after if see Unit 144 . If you come in late tonight please don t make a noise. C Present perfect After a linking word of time we can often use the present perfect for the future. I m starting a job in sales after I ve finished college. As soon as you ve heard any news will you let me know Compare after Ifinish college see B . The meaning is the same. But sometimes there is a difference in meaning between the present simple and the present perfect. When I see the report I ll make some notes. I ll do both at the same time. When I ve seen the report I ll make some notes. I ll see it and then make notes. D Present continuous We can also use the present continuous for the
