Unit 4 Discovering Useful Structures语法ppt课件-（2019版）新人教版必修第一册高中英语（新教材）.pptx

1、Unit 4 语法精讲 教材原句：教材原句： The most powerful earthquake in the past 40 years caused a tsunami that crashed into coastlines across Asia yesterday, killing more than 6, 500 people in Indonesia, India, Thailand, Malaysla, and at least four other countries. 翻译翻译：在过去40年里最强烈的地震导致了一场海啸，这场海啸昨 日摧毁了横穿亚洲的海岸线，导致印度尼

2、西亚、印度、泰国、马 来西亚和至少其他四个国家的6500多人死亡。 教材原句：教材原句： The most powerful earthquake in the past 40 years caused a tsunami that crashed into coastlines across Asia yesterday, killing more than 6, 500 people in Indonesia, India, Thailand, Malaysla, and at least four other countries. 句型分析：句型分析：本句为主从复合句，句中thatcou

3、ntries为定语从句， 修饰先行词 tsunami；在该定语从句中含有现在分词短语 killing， 在从句中做结果状语。 现在分词(短语)做结果状语 典例分析典例分析 He didnt come today, making it necessary for us to find someone to do his work. 他今天没来，因而我们必须找人干他的工作。 (1)句子的主谓部分与分词之间含有逻辑上的因果关系。 典例分析典例分析 A number of new machines were installed in the factory, thus resulting in an

4、increase in production. 这家工厂安装了许多新机器，因而增加了生产。 (2)表示结果的现在分词短语通常放在句子的后面，其前常有一逗号 隔开，分词短语前有时可加上副词thus或there by（因而、因此）。 典例分析典例分析 1. He dropped the glass, breaking it into pieces. = and broke it into pieces. 2. He comes home late every evening, making his wife very angry. = , which makes his wife very ang

5、ry. (3)作结果状语的现在分词短语的逻辑主语可以是句子的主语，也可 以前边的整个句子。 由and连接的并列谓语 非限制性定语从句 Attention 现在分词短语和不定式短语作结果状语的区别现在分词短语和不定式短语作结果状语的区别: 现在分词短语作结果状语：现在分词短语作结果状语：表示一种合乎情理的,顺其自然的结果； 不定式短语作结果状语：不定式短语作结果状语：通常表示事先未曾预料到的情况或结果，有时 不定式前用only来加强语气。 Attention 1. He did his homework carelessly, making a lot of mistakes. 他做家庭作业时粗

6、心大意，结果犯了很多错误。 2. I rushed to the station in a hurry, only to find the train already gone. 我匆忙赶到火车站，不料火车己经开走了。 1. The hospital has recently obtained new medical equipment, _(allow) more patients to be treated. 2. He was caught in the rain, thus _(make) himself catch a cold. 3. I hurried to school, on

7、ly _(find) it was Sunday. 语法填空。语法填空。 考点追击考点追击 allowing making to find Sum up：现在分词(短语)做结果状语 1 2 三种用法 现在分词短语和不定式短语作结果状语的区别 教材原句：教材原句： Indian officials said as many as 1,900 had been killed along the southern coast. 句型分析：句型分析：本句为复合句，主句为 Indian officials said，其后 面为宾语从句;在该从句中含有 as many as 短语，修饰1900。 翻译翻译

8、：印度方面的政府官员称，在南部海岸线附近已有多达1900 人死亡。 asas 结构 基本用法：基本用法：中间只能用形容词或副词的原级，意为“和一样”。 E.g. Hes as old as her/she. 他年纪跟她一样大。 副词连词 典例分析典例分析 He doesnt study as /so hard as his brother. 他学习不如他弟弟努力。 (1)用于否定句，在否定句中用not as/soas。 典例分析典例分析 你的房间与我的一样大。 Your room is as large as mine. Your room is as large as me. (2)关于比较

9、对象：使用该结构要注意比较的双方必须是可以比较的 同类人或物。 典例分析典例分析 1. You must speak English as much as possible. 你必须尽可能地多说英语。 2. Youve made as many mistakes as I have. 你犯的错误和我犯的一样多。 (3)涉及数量或程度： as much+ (不可数名词) + as as many+ (可数名词复数) + as 典例分析典例分析 1. She is a cook as good as her mother. 2. She is as good a cook as her mothe

10、r. 3. She is as a good cook as her mother. (4)注意下列结构的词序 典例分析典例分析 1. I earn half as much as you do. 我只赚你的一半钱。 2. This rope is twice as long as that one. 这根绳子比那根长一倍。 (5)关于修饰语： 修饰asas结构的常见词语有nearly, almost, just, exactly, half, quite, twice等，请注意这些修饰语都只能放在asas 结构之前 。 1. 油漆后的这辆自行车和新的一样。 Painted, this bike is _ _ _ a new one. 2.我没有原来想象的那么多钱。 I haven t got _ _ _ _I thought. 3. 非洲有多达700种不同的语言。 _ _ _ 700 different languages are spoken in Africa. 完成句子。完成句子。 考点追击考点追击 as good as as much money as As many as Sum up： asas 结构 1 2 基本用法 五个要点 Bye-bye!