Unit6语法讲解及习题 (not) as ... as ... 结构2025-2026学年沪教版英语（五四学制）七年级上学期

沪教英语（五四学制）七上Unit6语法讲解及习题 (not) as ... as ... 结构 一、语法核心讲解 本单元重点语法：Comparison with (not) as ... as ...（同级比较结构） 1. 语法定义 (not) as ... as ... 结构用于表示同级比较，即比较两个人或事物在某方面程度相同或不同： as ... as ...：表示“和……一样……”，说明两者程度相同。 not as/so ... as ...：表示“不如……那样……”，说明前者在某方面不如后者。 2. 基本结构 句型结构 含义 例句（参考本单元） A + be + as + 形容词原级 + as + B A和B一样…… The views of the Amazon are as beautiful as those of the Nile. （亚马逊河的景色和尼罗河的一样美。） A + be + not as/so + 形容词原级 + as + B A不如B…… The Huangpu River is not as long as the Amazon. （黄浦江不如亚马逊河长。）My brochure is not as/so colourful as hers. （我的宣传册不如她的色彩丰富。） 注意： 1. 结构中的形容词必须使用原级，不能使用比较级或最高级。 2. 在否定句中，not as ... as ... 和 not so ... as ... 可以互换使用。 3. 核心用法及例句 用法一：表示两者程度相同（as ... as ...） 用于强调两个对象在某一属性上是相等的。 例句： 1. Mount Taishan is as famous as Mount Huashan.（泰山和华山一样有名。） 2. The Yellow River is as important to Chinese culture as the Yangtze River.（黄河和长江对中国文化一样重要。） 3. This part of the river is as clear as its source.（河流的这一段和源头一样清澈。） 用法二：表示前者不如后者（not as/so ... as ...） 用于强调前者在某一属性上不及后者，这是本单元的重点。 例句： 1. The Yellow River is not as long as the Amazon.（黄河不如亚马逊河长。） 2. Mount Taishan is not as high as Mount Huashan.（泰山不如华山高。） 3. The Yangtze River is not as old as the Nile.（长江不如尼罗河古老。） 用法三：同义句转换（not as ... as ... ↔ 比较级） 在特定语境下，not as ... as ... 结构可以和比较级进行同义句转换： A is not as/so + 形容词原级 + as B = B is + 形容词比较级 + than A 例句：Mount Taishan is not as high as Mount Huashan. 同义句：Mount Huashan is higher than Mount Taishan. 4. 易混点辨析 结构 含义 侧重点 as ... as ... 和……一样 强调两者程度相同 not as/so ... as ... 不如…… 强调前者不如后者，可转换为比较级 比较级 + than 比……更…… 强调前者比后者更…… 二、综合练习题 题型一：用 (not) as ... as ... 结构完成句子 1. The Yangtze River is __________ (long) __________ the Yellow River. 2. This lake is __________ (deep) __________ that one. 3. My trip to the mountains was __________ (exciting) __________ yours. 4. The weather in Harbin is __________ (warm) __________ in Kunming. 5. This book about rivers is __________ (interesting) __________ that one. 6. The bridge is __________ (wide) __________ the road. 7. His knowledge of geography is __________ (good) __________ mine. 8. The view from the top is __________ (amazing) __________ I expected. 9. This river is __________ (clear) __________ it was ten years ago. 10. The park is __________ (big) __________ the zoo near my home. 题型二：句型转换 1. Mount Huashan is higher than Mount Taishan. (改为同义句) Mount Taishan is __________ __________ __________ __________ Mount Huashan. 2. The Yangtze River is longer than the Yellow River. (改为同义句) The Yellow River is __________ __________ __________ __________ the Yangtze River. 3. This film is more interesting than that one. (改为同义句) That film is __________ __________ __________ __________ this one. 4. He is taller than his brother. (改为同义句) His brother is __________ __________ __________ __________ him. 5. The Amazon is not as long as the Nile. (改为同义句) The Nile is __________ __________ the Amazon. 6. This city is more beautiful than that one. (改为同义句) That city is __________ __________ __________ __________ this one. 7. She is better at English than me. (改为同义句) I am __________ __________ at English __________ her. 8. The weather today is colder than yesterday. (改为同义句) The weather yesterday is __________ __________ __________ __________ today. 9. This mountain is more famous than that one. (改为同义句) That mountain is __________ __________ __________ __________ this one. 10. My bag is heavier than yours. (改为同义句) Your bag is __________ __________ __________ __________ mine. 题型三：同义句转换 1. The Huangpu River is not as long as the Amazon. (改为同义句) The Amazon is __________ __________ the Huangpu River. 2. The views of the Amazon are as beautiful as those of the Nile. (改为同义句) The views of the Nile are __________ __________ __________ __________ those of the Amazon. 3. This part of the river is not as deep as its source. (改为同义句) The source of the river is __________ __________ this part. 4. My brochure is not as colourful as hers. (改为同义句) Her brochure is __________ __________ __________ __________ mine. 5. The Yellow River is not as long as the Yangtze River. (改为同义句) The Yangtze River is __________ __________ the Yellow River. 题型四：单项选择 1. The Yellow River is not __________ long __________ the Yangtze River. A. as; as B. so; as C. as; so D. A and B 2. This mountain is __________ high __________ that one. They are the same height. A. as; as B. not as; as C. more; than D. most; than 3. He is __________ as hard-working as his sister. A. not B. no C. never D. none 4. The bridge is __________ wide __________ the road. We can walk side by side on both. A. as; as B. not as; as C. more; than D. the most; / 5. This book is __________ interesting __________ that one. I like both of them very much. A. as; as B. not as; as C. more; than D. most; than 6. The weather in Harbin is __________ warm __________ that in Sanya in winter. A. as; as B. not as; as C. so; so D. as; so 7. My painting is __________ colourful __________ yours. The teacher praised both of us. A. as; as B. not as; as C. more; than D. the most; / 8. The classroom is __________ bright __________ the library. We can read books clearly in both. A. as; as B. not as; as C. brighter; than D. brightest; / 题型五：用括号内单词的正确形式完成短文 The Amazon is one of the longest rivers in the world. It is ⑴__________ (long) __________ the Nile. The Yellow River is ⑵__________ (long) __________ the Amazon. The scenery along the Amazon is ⑶__________ (beautiful) __________ that along the Nile. The water in the Yellow River is ⑷__________ (clear) __________ in the Amazon. The climate in the Sahara Desert is ⑸__________ (wet) __________ in the Amazon basin. 三、答案与详细解析 题型一：用 (not) as ... as ... 结构完成句子 1. as long as 解析：表示长江和黄河长度方面的同级比较，用as ... as ...结构。 2. as deep as / not as deep as 解析：无明确语境，可表示两者深度相同或不同，均符合(not) as ... as ...用法。 3. as exciting as / not as exciting as 解析：无明确语境，可表示两次旅行的兴奋程度相同或不同，均符合(not) as ... as ...用法。 4. not as warm as 解析：根据常识，哈尔滨的天气不如昆明暖和，用not as ... as ...结构表前者不如后者。 5. as interesting as / not as interesting as 解析：无明确语境，可表示两本书的有趣程度相同或不同，均符合(not) as ... as ...用法。 6. as wide as / not as wide as 解析：无明确语境，可表示桥和路的宽度相同或不同，均符合(not) as ... as ...用法。 7. as good as / not as good as 解析：无明确语境，可表示两人的地理知识水平相同或不同，均符合(not) as ... as ...用法。 8. as amazing as 解析：表示山顶的景色和预期的一样令人惊叹，用as ... as ...结构表程度相同。 9. not as clear as 解析：表示这条河不如十年前清澈，用not as ... as ...结构表前者不如后者。 10. as big as / not as big as 解析：无明确语境，可表示公园和动物园的大小相同或不同，均符合(not) as ... as ...用法。 题型二：句型转换 1. not as high as 解析：“A is 比较级 than B” 转换为 “B is not as 原级 as A”，用not as ... as ...表前者不如后者。 2. not as long as 解析：同上，比较级转not as ... as ...结构的固定转换规则。 3. not as interesting as 解析：同上，比较级转not as ... as ...结构的固定转换规则。 4. not as tall as 解析：同上，比较级转not as ... as ...结构的固定转换规则。 5. longer than 解析：“A is not as 原级 as B” 转换为 “B is 比较级 than A”，not as ... as ...结构转比较级的固定规则。 6. not as beautiful as 解析：同上，比较级转not as ... as ...结构的固定转换规则。 7. not as good; as 解析：同上，比较级转not as ... as ...结构的固定转换规则。 8. not as cold as 解析：同上，比较级转not as ... as ...结构的固定转换规则。 9. not as famous as 解析：同上，比较级转not as ... as ...结构的固定转换规则。 10. not as heavy as 解析：同上，比较级转not as ... as ...结构的固定转换规则。 题型三：同义句转换 1. longer than 解析：“A is not as 原级 as B” 转换为 “B is 比较级 than A”，not as ... as ...结构转比较级的固定规则。 2. as beautiful as 解析：“A is as 原级 as B” 转换为 “B is as 原级 as A”，as ... as ...结构表同级比较，前后对象可互换。 3. deeper than 解析：“A is not as 原级 as B” 转换为 “B is 比较级 than A”，not as ... as ...结构转比较级的固定规则。 4. more colourful than 解析：同上，not as ... as ...结构转比较级的固定规则。 5. longer than 解析：同上，not as ... as ...结构转比较级的固定规则。 题型四：单项选择 1. D 解析：在否定句中，not as ... as ... 和 not so ... as ... 表达含义一致，可互换使用。 2. A 解析：后句提示两者高度相同，用as ... as ...结构表同级比较。 3. A 解析：not as ... as ...是固定结构，表“不如……”，其余选项无此搭配。 4. A 解析：后句提示桥和路都能并肩走，说明宽度相同，用as ... as ...结构表同级比较。 5. A 解析：后句提示两本书都很喜欢，说明有趣程度相同，用as ... as ...结构表同级比较。 6. B 解析：根据常识， 哈尔滨不如三亚暖，故哈尔滨的天气not as warm as三亚。 7. A 解析：后句提示老师表扬了两人的画，说明色彩丰富程度相同，用as ... as ...结构表同级比较。 8. A 解析：后句提示两个地方都能清晰看书，说明亮度相同，用as ... as ...结构表同级比较。 题型五：用括号内单词的正确形式完成短文 1. not as long as 解析：根据常识，亚马逊河不如尼罗河长，用not as ... as ...结构表前者不如后者。 2. not as long as 解析：根据常识，黄河不如亚马逊河长，用not as ... as ...结构表前者不如后者。 3. as beautiful as 解析：表示两条河沿岸的景色一样美，用as ... as ...结构表同级比较。 4. not as clear as 解析：根据常识，黄河的水不如亚马逊河清澈，用not as ... as ...结构表前者不如后者。 5. not as wet as 解析：根据常识，撒哈拉沙漠的气候不如亚马逊盆地湿润，用not as ... as ...结构表前者不如后者。 ( 1 ) 学科网（北京）股份有限公司 $