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句型Upon/On doing或Upon/On＋名词的结构 【原句呈现】Upon finishing his studies, he started travelling in China.（P9） 学习一结束，他就开始了中国之旅。 【句法分析】“upon/on doing或upon/on＋名词”表示“一……就……”相当于as soon as 引导的状语从句。 他刚一到车站，就发现火车已经开走了。 On/Upon arriving at the station, he found that the train had left. On/Upon arrival at the station, he found that the train had left. As soon as he arrived at the station, he found that the train had left. 【考点聚焦】在书面表达中如何灵活表达“一……就……”。 表示“一……就……”的表达法还有： ①从属连词：as soon as/once(as soon as强调时间的紧接，而once带有条件的意味。) ②No sooner had ＋主语＋过去分词…＋than＋主语＋动词的过去时 ③Hardly/Scarcely/＋had＋主语＋过去分词…＋when/before＋动词的过去时 以下供教师备课时取舍，也可以不讲①名词：the moment/instant/minute/second...。 ②副词：instantly/immediately/directly...。 ③介词短语“At the sight/thought/mention of＋名词”分别表示“一看到/想到/提到……就……”。 【考题研读】句型转换 ①Upon/On seeing him, I’ll inform him of the time and place of the lecture. ②As soon as he got to the cinema, he found all the lights gone out. 【答案】①As soon as I see him, I’ll inform him of the time and place of the lecture. Once I see him, I’ll inform him of the time and place of the lecture. ②Upon/On getting to the cinema, he found all the lights gone out. Upon/On arrival at the cinema, he found all the lights gone out. 【其它供参考的答案】 ①At the sight of him, I’ll inform him of the time and place of the lecture. The moment I see him, I’ll inform him of the time and place of the lecture. Immediately I see him, I’ll inform him of the time and place of the lecture. ②Hardly/Scarcely had he got to the cinema when he found all the lights gone out. (=He had hardly/scarcely got to the cinema when he found all the lights gone out.) No sooner had he got to the cinema than he found all the lights gone out. (=He had no sooner got to the cinema than he found all the lights gone out.) 
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