as引导定语从句教学PPT课件.ppt

as 引导定语从句 一、as引导限制性定语从句 主要结构有： the same…as such…as as…as so…as 主句中出现the same, as, such, so修饰先行词，需选择as做关系代词在定语从句中做主语或宾语。 1.? It’s the same book as we wanted to find yesterday . 我们昨天要找的是同一类书。 2.? Do you have such books as we like ? 你有我们喜欢那种书吗？ 3.? She will marry as healthy a man as she can find . 她将嫁给她能找到的任何一个有钱人。 4.? There is so warm a house as we want to live in . 这里有如此暖和的房子，我们都想住在里面 。 6.? He has so difficult a problem , as none of us can solve . 他有如此难的一个问题，我们没有人能解决 Do you have such books as we like ? 你有我们喜欢那种书吗？ 。 二、引导非限制性定语从句 ⑴ as引导非限制性定语从句，指代整个主句内容，从句可置于句首，句中或句尾 1．? As everyone knows ,China is a beautiful country with a long history . 每个人都知道，中国是一个有着悠久历史的美丽国家。 2．? The earth , as we know , moves round the sun . 地球，我们都知道，围着太阳转。 3．? Tom works hard and is willing to help others, as we all know. 汤母工作努力，并且乐于助人，这一点我们都知道。 ⑵ 非限制性定语从句中的谓语为被动式时，常用as做主语 be said /known/announced /reported/mentioned /expected/discussed Grammar , as has been said before, is not a set of dead rules. 语法，就像以前所说，不是一套死规则。 As is known to all , TaiWan is part of China . ⑶? as引导非限制性定语从句，有“如，似，正像”的含义，因此，下列句式多用as as has been said above 如上所说 as anybody can see正像每个人所看到的那样 as we had expected正如我们所预料的那样 例如： The boy has as much progress as we had expected. 正像我们所预料的那样，这个男孩取得了大的进步。 区分： 1. the same as 和 the same that 林桐： Her sister studies in the same school _____ she is in. Her sister will have the same class ____ she has this afternoon. that as 区分： ※ as 和which 引导非限定性定语从句 修饰整个主句内容时可以互换： He failed in the test, as/ which seemed natural. He was a foreigner, as/which I knew from his accent. 区分： ※ as 和which 引导非限定性定语从句 2. as引导的非限制性定语从句可放于主句 前、主句中、主句后，而which引导的非限制 性定语从句一般放于主句后或句中。 As we all know, heavy objects and light objects fall at the same speed unless air holds them back. 区分： ※ as 和which 引导非限定性定语从句 3. as有“正如”的含义，which没有此含义。 如： As is well known，Shanghai is a big city． Some of the roads were