第13讲状语从句[1].ppt

3. The head teacher laughed __________he spoke. Obviously, he was satisfied with our performance. 6 as 6 表示 “当……时候”时，when可接短暂性或延续性动词，既可表点时间，也可表段时间；while只能接延续性动作，表段时间；as强调两个动作同时发生，常译为“一边……一边……”。 原因状语从句的从属连词as, since, because用法上有何区别？ 根据句子意思选词(as, since, because)填空(每空一词) 　1. It is __________ he is ill that he isnt here celebrating your birthday. 　2. __________ you have known the truth from head to toe, I wont give any explanation. 7 because　 Since　 3. __________ the weather is not so helpful, we had better prepare two plans in advance. 7 As 7 表达原因时，使用as, since，because等从属连词，它们的区别主要是语气上的区别，但在实际运用中，语气是很难把握的东西，因此掌握相关句式和含义是关键。because语气最强，表示与结果直接相关的原因，可译为“(正/就是)因为”，所以常用于强调句型或回答why引导的问题。since表示顺承关系，表达说话者认为合乎情理的逻辑推断，可译为 7 “既然……(就……)”，此时用法上相当now that。as语气比较弱，常译为“由于”，不强调原因时，有时可与because通用。特别注意，也可以表示原因，但它是并列连词，用法上注意两点： 不放句首(语气弱)；引出补充说明的原因，不必直接翻译成“因为”。如：Come up to me, for I have something important to tell you(过来，我有要事对你讲)． 让步状语从句的从属连词though, although, as, while用法上有何区别？ 根据句子意思选词(though, although, as, while)填空 1. ________________________ the Internet has so many conveniences, it also has a lot of inconveniences. 2. _________________ the actress is beautiful, I dont like her. 8 While / Though / Although　 Though / Although 3. Child _______________ he is, he is the first Chinese to travel across Europe alone by bike. 8 as/ though 8 表达让步含义时，常用从属连词though, although, as, while引导让步状语从句。while强调对比，只能放句首，以引出相对或相反的情况，译为“在……同时，却(有相反的情况) ”，此时可以用though或although替换。though与although大部分情况下可以互相替换，既可放句首，也可放句末。as 引导让步状语从句必须倒装，此时可以用though替换，但不可用although替换。 时间状语从句的从属连词till, until用法上有何区别？ 根据句子意思填空(till, until)选词 　1. Yesterday, I waited for you at the bus station __________ 4 oclock in the afternoon. 　2. __________ you told me, I had heard nothing of what happened. 9 until / till　 Until　 3. Not __________ the war ended did he return home. 　4. It was not__________ the result of the exam was announce