DANG DAC BIET CUA CAU DIEU KIEN

Các trường hợp đặc biệt của câu điều kiện
Use: If +S + had done + LAST/AGO, S +could/would + do+ NOW Other wise/ or / orelse == if + S + V, S+V ----Trái ngược với những gì đã nói đến ở trên và bằng một mệnh đề điều kiện Ex:+ I haven`t got any money left, other wise I would gave you. + I didn`t know you came, orelse I would have waited for you. + You have to learn hard, or you will fail the exam. If/unless/ as long as ......now/today(loại 2) If/unless/ as long as ......last/ago(loại 3) Ex:++If/he/here/now/he/help/us/solve/problem =>If he were here now, he would help us to solve this problem. ++If/he/build/ house/last year/ save/ lot/money/now If he had built his house last year, he would saved a lot of money now. Đổi câu:Unless = If ...not... Ex:+If he doesn`t come, we`ll go without him. => Unless he does come, we`ll go without him +If he continus to smoke, he`ll die. => Unless he stops smoking, he`ll die.
Chuyển đổi câu điều kiện:
Sb+ can/wil+l do st+ by+ V-ing ==>If sb+ V, he can/will do st Ex:+I can save a lot of time by booking the ticket on phone. =>If I book the ticket on phone, I can save a lot of time. + by working hard he could have earned a lot of money. =>If he worked hard, he could have earned a lot of money. Sb + has to/ must/ should/ had better/ ought to+ do st, or/ other wise + st+ will happen ==> If sb doesn`t do st, St will happen Ex:+ We have to leave now, or we`ll miss the train. => If we don`t leave now, we`ll miss the train. Do st/ Don`t do st + or st will happen/ If you don`t want st to happen. ==> If you + don`t do st/ do st, will happen. Ex:+Be careful, or you`ll fall down =>If you aren`t careful, you `ll fall down. + Don`t wake her up, she`ll be angry. =>If you do to wake her up, she will be angry. Reason, result==> If not reason, not result( dạng2 dang3 hoặc dạng hỗn hợp) Ex: + I can`t buy this computer because I haven`t got enough money. => If I had enough money, I could buy this computer. +He ignored the traffic light, so he had an accident. => If he hadn`t ignored the traffic light , he wouldn`t have had an accident. + You are tired now because you stayed up late last night. => If you hadn`t stayed up late last night, you wouldn`t be tired now Without N + st will happen/ st would happen /st would have happend ==> If +( S+V) (not N) .............................Does, st will happen .............................did/were, st would happen .............................had done, st would have happen Ex: + The without your help, I`ll fail again. => If I don`t have your help, I`ll fail again. + Without the sun, There would be no life on the Earth. =>If there weren`t the sun, There would be no life on the Earth.