【正文】
ft here. VI. since (from the time that) 1)I have known him ever since he was a boy. 2)I have worked here since I graduated from the university. *3)It is (has been)two years since he came here. VII. until (till) (up to the time that) 1)He will not go to bed until(till) his mother es. 2)Until she told me, I had no idea of what they had said. 3)It is not until his mother es home that he will go to bed.(強(qiáng)調(diào)結(jié)構(gòu)) VIII .as soon as 1)As soon as she got home,she began to cook. On getting home,she began to cook. *IX. every time,each time,the moment 1)Every time/each time I catch a cold,I have pain in my back. 2)There was an applause the moment (as soon as) she appeared on the stage. X. by the time 1)By the time he arrived,the train had already gone. 2)By the time he es,we will already have left. Exercises: walked out of the room _________the meeting was over. must stay in school _________they are sixteen. the medicine _________you go to bed. as soon as by the time before knew nothing about it _______he told me. is more than five years _____we started to learn English. talked on, he got more and more excited. should strike _______the iron is hot. until since As while Clauses of Reason(原因狀語從句)