Unit 3 Section Ⅲ Using language—Grammar（Word教参）-【优化指导】2023-2024学年新教材高中英语选择性必修第四册（外研版2019）

Section Ⅲ　Using language—Grammar 复习状语从句 [对应学生用书P68] [观察] 1．You can only imagine how travellers felt when they saw the oasis of Dunhuang ahead of them. 2．If you look up，you can see the paintings and other artworks that are testimony to how the Silk Road brought East and West together. 3．In the Ming Dynasty, trade routes changed and Dunhuang was not as prosperous as it used to be. 4．Given that the theme of the Expo was to promote cultural exchange ...Dunhuang was the ideal place. 5．The teacher raised his voice on purpose so that the students in the back could hear more clearly. 6．Although he is young，he can do these by himself. 7．When in Rome, do as the Romans do. [归纳] 1．以上例句都为主从复合句，并且从句的位置比较灵活，可置于句首、句中和句尾。 2．以上例句中，加黑部分在句中作状语。 [对应学生用书P69] 1．时间状语从句 常用引导词：when，as，while，as soon as，before，after，since，till，until 特殊引导词：the minute，the moment，the second，every time，the day，the instant，immediately，directly，no sooner ...than，hardly ... when，scarcely ...when等 I didn't realize how hard my mother was until I became an adult. 直到我长大成人，我才意识到我母亲有多辛苦。 The children ran away from the orchard(果园) the moment they saw the guard. 孩子们一看到警卫就从果园跑了。 No sooner had I arrived home than it began to rain. 我一到家就开始下雨了。 连词 含义及用法 when 意为“当……的时候”，when引导的从句的谓语动词可以是延续性动词，也可以是瞬间(非延续)性动词 while 意为“当……的时候”，while引导的从句的谓语动词必须是延续性的，并且强调主句和从句的动作同时发生 as 意为“一边……一边……”，as引导的动作一般是延续性的，一般主句和从句的动作同时发生 When he had finished his homework，he took a short rest. 当他完成作业后，他休息了一会。 While John was watching TV，his wife was reading books. 约翰在看电视的时候，他的妻子正在读书。 As we were going out，it began to rain. 当我们正要出门时，天开始下雨了。 [即学即练]　单句填空 ①I waited patiently until/till the oil was hot. ②When/As he asked the villagers on the banks of the river where he could find the legendary artist，they smiled and pointed down the river. 完成句子 ③Watch out for injuries while exercising. Always stop as_soon_as(一……就……)you begin to feel any pain. 2．地点状语从句 常用引导词：where 特殊引导词：wherever，anywhere，everywhere等 Generally，air will be heavily polluted where there are fa