比较状语从句ppt课件
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b. 主语 + 谓语 + 形容词 / 副词 比较级 + than + 被比对象
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在这种结构中，than是个连词 ，引导比较状语从句，如果被 比较的对象为名词或代词，一 般采用省略形式，省去与主句 中相同的部分。
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This river is longer than that one. He is younger than she. Lesson One is more interesting than Lesson Two. She studies more diligently 勤奋地than her classmates.
.
He drives faster and more dangerously than you. This test is less simple than I expected it to be. Light does not travel at the same speed through all materials物质; it goes slower through some than through others.
.
在这个句子结构中，形容词最 高级的前面要加定冠词the。副 词最高级的前面可加the可不加 。形容词最高级后面可跟名词 ，而副词后面却不能跟名词， 它只能修饰动词。比较范围一 般是短语或从句。
.
This coat is the most expensive that I’ve ever bought. She is the most active girl in our class. He worked hardest in the workshop. She bought the least expensive towels that she could find.
.
有时，连词than后直接跟从句 的谓语，这时我们可以把它看 成是省略了某些词语。
.
源自文库
在这种结构中，有时比较对象 需要根据上下文内容进行判断； 有时对象含蓄在主句中，这时 后面往往是一个表示时间或条 件的修饰语。
.
There were more casualties 受害者than was reported. (= than it was reported there were)
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有时as好象是从句的主语，其 实是从句的主语省略了。
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There were not so many tickets available as were asked for.
You seemed to understand human nature as well as do science.
.
常是省略形式。
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Physics is as important as mathematics (is). You seem to know music as well as you know astronomy.天文学 Take as much as you want. Is it as difficult as they say it is? We have accomplished as 达到（目的) much in the past three years as would have taken ten years in the past.
She played the piano much better than could have been expected.
.
Taking this medicine helps to relieve缓解 his headache, and makes him less illtempered脾气暴躁than before.
比较句的肯定形式还有the same as, such… as；否定形式还有not the same as, not such… as。
.
Your name is the same as your father’s. Her dress was the same color as mine. Your watch is not the same as his. I never met such a man as your younger brother.
.
than引导的从句有时可放句首。 Than he no one could show a friendlier attitude 态度to you.
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在一定上下文中，从句还可以 省略。 You ought to come here earlier.
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c. 主语 + 谓语 + 形容词 / 副词 最高级 +（名词）+ 范围
.
表示两个人或事物在性质、特 征等方面的不相似或不相同时 ， 就用“主语 + 谓语 + not so / as +形容词 / 副词 + (名词) + as + 被比对象”这个句型。
.
You are not so old as you look. There was no garden so lovely as his in this city. It isn’t as cold as it was yesterday. No person is either so happy or so unhappy as he imagines. Finally he has made as much money as he wanted.
Degrees of Comparison
比较状语从句
.
比较状语从句是表示比较、比 例、类比等的句子。其主要句 子结构如下：
.
a. 主语 + 谓语 + as + 形容词 / 副词 + as + 被比对象
.
这个句型叫等比句结构，表示两 个人和事物在性质、特征等方面 相似或相等，即相等的比较。 被 比对象可能是从句中的主语，也 可能是宾语或其他成分。两个as， 作用不同，前一个as是副词，在主 句中说明所比较内容的程度，后 一个as是连词，含有“比”、“如 同”的意思，它所引导的从句通
b. 主语 + 谓语 + 形容词 / 副词 比较级 + than + 被比对象
.
在这种结构中，than是个连词 ，引导比较状语从句，如果被 比较的对象为名词或代词，一 般采用省略形式，省去与主句 中相同的部分。
.
This river is longer than that one. He is younger than she. Lesson One is more interesting than Lesson Two. She studies more diligently 勤奋地than her classmates.
.
He drives faster and more dangerously than you. This test is less simple than I expected it to be. Light does not travel at the same speed through all materials物质; it goes slower through some than through others.
.
在这个句子结构中，形容词最 高级的前面要加定冠词the。副 词最高级的前面可加the可不加 。形容词最高级后面可跟名词 ，而副词后面却不能跟名词， 它只能修饰动词。比较范围一 般是短语或从句。
.
This coat is the most expensive that I’ve ever bought. She is the most active girl in our class. He worked hardest in the workshop. She bought the least expensive towels that she could find.
.
有时，连词than后直接跟从句 的谓语，这时我们可以把它看 成是省略了某些词语。
.
源自文库
在这种结构中，有时比较对象 需要根据上下文内容进行判断； 有时对象含蓄在主句中，这时 后面往往是一个表示时间或条 件的修饰语。
.
There were more casualties 受害者than was reported. (= than it was reported there were)
.
有时as好象是从句的主语，其 实是从句的主语省略了。
.
There were not so many tickets available as were asked for.
You seemed to understand human nature as well as do science.
.
常是省略形式。
.
Physics is as important as mathematics (is). You seem to know music as well as you know astronomy.天文学 Take as much as you want. Is it as difficult as they say it is? We have accomplished as 达到（目的) much in the past three years as would have taken ten years in the past.
She played the piano much better than could have been expected.
.
Taking this medicine helps to relieve缓解 his headache, and makes him less illtempered脾气暴躁than before.
比较句的肯定形式还有the same as, such… as；否定形式还有not the same as, not such… as。
.
Your name is the same as your father’s. Her dress was the same color as mine. Your watch is not the same as his. I never met such a man as your younger brother.
.
than引导的从句有时可放句首。 Than he no one could show a friendlier attitude 态度to you.
.
在一定上下文中，从句还可以 省略。 You ought to come here earlier.
.
c. 主语 + 谓语 + 形容词 / 副词 最高级 +（名词）+ 范围
.
表示两个人或事物在性质、特 征等方面的不相似或不相同时 ， 就用“主语 + 谓语 + not so / as +形容词 / 副词 + (名词) + as + 被比对象”这个句型。
.
You are not so old as you look. There was no garden so lovely as his in this city. It isn’t as cold as it was yesterday. No person is either so happy or so unhappy as he imagines. Finally he has made as much money as he wanted.
Degrees of Comparison
比较状语从句
.
比较状语从句是表示比较、比 例、类比等的句子。其主要句 子结构如下：
.
a. 主语 + 谓语 + as + 形容词 / 副词 + as + 被比对象
.
这个句型叫等比句结构，表示两 个人和事物在性质、特征等方面 相似或相等，即相等的比较。 被 比对象可能是从句中的主语，也 可能是宾语或其他成分。两个as， 作用不同，前一个as是副词，在主 句中说明所比较内容的程度，后 一个as是连词，含有“比”、“如 同”的意思，它所引导的从句通