【优化探究】(教师用书)(外研版)2014届高三英语一轮总复习语法专攻略九.ppt

1．表示时间的状语从句可以由when，whenever，as，while，before，until，ever since ，as soon as等词引导。 Dont be afraid of asking your teachers for help when it is needed. 如有需要，不要害怕向老师问问题。 Please write it down before you forget it. 趁你现在还没忘把它记下来。 Tom was about to close the window when his attention was caught by a bird.(2010年高考大纲全国卷Ⅱ) 汤姆正要关上窗户，就在这时一只鸟引起了他的注意。 【温馨提示】　when可表原因，意为“既然”。 How can you expect to learn anything when you never listen? 既然你什么也听不下去你怎么期望学东西呢？ 2．as soon as，immediately，directly，instantly，the moment，the minute，the instant，no sooner...than...，hardly/scarcely...when...和once(一……就……)这些从属连词引导的从句都表示从句的动作一发生，主句的动作随即就发生，常译为“一……就……”。从句中用一般时态代替将来时态。 The moment I heard the voice，I knew father was coming. 我一听到那个声音，我就知道父亲来了。 No sooner had we arrived at the station than the train left. 我们刚到车站，火车就离站了。 The boy burst into tears immediately he saw his mother. 那男孩一见到他妈妈便放声大哭。 My sister came directly she got my short message. 我姐姐一收到我的短信就来了。 3．no sooner...than和hardly...when引导的从句表示“刚……就……”。主句中的动词一般用过去完成时，从句用过去时。若把no sooner，hardly提到句首，主句须倒装。 No sooner had he sat down than the phone rang. 他刚坐下，电话铃就响了。 Hardly had the game begun when it started to rain. 比赛刚刚开始，天就开始下起雨来。 1．通常由if，unless如果不，除非，as(so)long as 只要，in case(that)“结果，万一”等连词引导。 In case anything important happens，please call me up. 万一发生了什么重要事情，请打电话给我。 My parents dont mind what job I do as long as I am happy. 我父母不在乎我从事什么样的工作，只要我高兴就好。 2．由on condition(that)；provided(that)；providing(that)(假若；倘使)；supposing(that)等引导的条件状语从句。 You can go swimming on condition that you dont get too far from the river bank. 只有不离河岸太远你才能下去游泳。 Supposing it rains tomorrow，what shall we do? 假设明天下雨我们做什么？ 1．通常由连词where和wherever引导，从句可位于主句之前，也可位于主句之后。 The little girl who got lost decided to remain where she was and wait for her mother. 那个迷路的小女孩决定待在原地等她母亲。 Keep in touch with your family members wherever you are in the world. 不管你在世界上的什么地方，都要跟家人保持联系。 2．地点状语从句在句首时常兼有抽象条件意味。 Where theres a will，theres a way. 有志者事竟成。 Where(ver)theres plenty of sun and rain，the fields are green. 哪里