八年级句型转换 答案
校园之窗 2026年1月5日 03:53:42 99ANYc3cd6
句型转换核心考点与技巧
句型转换主要有四大类，每一类都有其“钥匙”和“公式”。
肯定句 ↔ 否定句
核心考点： be动词、情态动词、助动词、实义动词的否定形式。
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解题技巧： 找到句子的“动词”或“助动词”，在其后直接加 not，如果句子中没有 be动词、情态动词或助动词，则需要借助 do/does/did 来帮助构成否定。
公式：
- be动词/情态动词 + not + ...
- 例：
She is a student.→She is not a student.(缩写：She isn't a student.) - 例：
You can swim.→You can not swim.(缩写：You can't swim.)
- 例：
- 实义动词 → do/does/did + not + 动词原形
- 例：
They like apples.→They do not like apples.(缩写：They don't like apples.) - 例：
He goes to school by bike.→He does not go to school by bike.(缩写：He doesn't go to school by bike.) - 例：
I watched TV last night.→I did not watch TV last night.(缩写：I didn't watch TV last night.)
- 例：
肯定句 ↔ 一般疑问句
核心考点： 句子结构的调整，特别是助动词 do/does/did 的使用。
解题技巧： 把句子的第一个实义动词或 be动词/情态动词提前到句首，句末用问号，如果句子没有 be动词/情态动词，同样需要借助 do/does/did。
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公式：
- be动词/情态动词 + 主语 + ... ?
- 例：
He is a teacher.→Is he a teacher? - 例：
They can speak English.→Can they speak English?
- 例：
- 实义动词 → Do/Does/Did + 主语 + 动词原形 + ... ?
- 例：
You like playing basketball.→Do you like playing basketball? - 例：
She gets up at 6:00.→Does she get up at 6:00?(注意：动词gets变回原形get) - 例：
He finished his homework.→Did he finish his homework?(注意：动词finished变回原形finish)
- 例：
肯定句 ↔ 特殊疑问句
核心考点： 疑问词的选择和句子结构的调整。
解题技巧：
- 第一步： 用一个合适的疑问词替换掉原句中需要提问的部分。
- 第二步： 把剩下的部分变成一般疑问句的结构。
常用疑问词：
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- 问人 (主语/宾语):
Who(主语),Whom(宾语),Whose(谁的) - 问事物/内容:
What - 问时间:
When,What time - 问地点:
Where - 问原因:
Why - 问方式:
How - 问年龄/数量/价格:
How old,How many,How much - 问频率:
How often
公式： 疑问词 + 一般疑问句 (be/情态/助动词 + 主语 + ...)?
例句分析：
- 原句：
My father is a doctor.(我爸爸是一名医生。)- 提问职业：
What is your father?(替换a doctor，剩下部分My father is变成一般疑问句is your father) - 提问人物：
Who is a doctor?(如果提问主语，结构稍有不同，Who直接做主语)
- 提问职业：
- 原句：
She goes to the park every Sunday.(她每个星期天都去公园。)- 提问地点：
Where does she go every Sunday?(替换to the park，剩下部分She goes变成一般疑问句does she go) - 提问频率：
How often does she go to the park?(替换every Sunday)
- 提问地点：
陈述句 ↔ 同义句/句型转换
核心考点： 词汇替换、短语转换、句式结构变化（如主动语态变被动语态、直接引语变间接引语等）,这是八年级的难点。
常见转换方式：
- 使用同义词/近义词替换：
like→enjoy,lovebig→large,hugebeautiful→pretty,nice,good-looking
- 使用短语替换：
too...to...(太...而不能...) →so...that...(..以至于不...)- 例：
He is too young to join the army.→He is so young that he can't join the army. spend time/money on sth.→pay time/money for sth.- 例：
She spent 100 yuan on the book.→She paid 100 yuan for the book.
- 句式转换：
- There be 句型：
There is a book on the desk.→On the desk, there is a book. - 感叹句：
What a beautiful girl!→How beautiful the girl is! - 被动语态 (八年级重点)：
- 结构：
be + 动词过去分词 - 例：
We clean the classroom every day.(主动) →The classroom is cleaned (by us) every day.(被动) - 例：
He wrote a letter yesterday.(主动) →A letter was written (by him) yesterday.(被动)
- 结构：
- 宾语从句 (间接引语)：
- 例：
He said, "I am happy."→He said (that) he was happy.(人称、时态可能需要变化)
- 例：
- There be 句型：
专项练习与答案
请尝试完成下面的练习,然后对照答案进行订正。
否定句转换
- Tom is from Canada.
- She can play the piano very well.
- They go to school by bus.
- I finished my homework yesterday.
- There are some birds in the tree.
一般疑问句转换
- These are your new books.
- He likes listening to music.
- They went to the Great Wall last summer holiday.
- She will come back in a week.
- The girl under the tree is my sister.
特殊疑问句转换
- 对
My brother提问：______ is in the room? - 对
a storybook提问：What is on the desk? - 对
at 7 o'clock提问：______ do you get up every day? - 对
because I was ill提问：______ didn't you come to school yesterday? - 对
twice a week提问：______ do you exercise?
同义句转换
- It takes me half an hour to walk to school. (同义)
I spend half an hour ______ ______ to school. - The box is too heavy for me to carry. (同义)
The box is heavy ______ I can't carry it. - He is so young that he can't join the army. (同义)
He is ______ young ______ join the army. - We must keep the classroom clean. (改为被动语态)
The classroom ______ ______ clean by us. - Lucy said, "I am reading a book now." (改为间接引语)
Lucy said (that) she ______ ______ a book then.
练习答案
否定句转换
- Tom is not from Canada. / Tom isn't from Canada.
- She can not play the piano very well. / She can't play the piano very well.
- They do not go to school by bus. / They don't go to school by bus.
- I did not finish my homework yesterday. / I didn't finish my homework yesterday.
- There are not any birds in the tree. / There aren't any birds in the tree.
一般疑问句转换
- Are these your new books?
- Does he like listening to music?
- Did they go to the Great Wall last summer holiday?
- Will she come back in a week?
- Is the girl under the tree your sister?
特殊疑问句转换
- Who is in the room? (提问主语)
- What is on the desk? (提问物)
- What time / When do you get up every day? (提问具体时间/泛指时间)
- Why didn't you come to school yesterday? (提问原因)
- How often do you exercise? (提问频率)
同义句转换
- It takes me half an hour to walk to school. (同义)
I spend half an hour **walking** **to** school. - The box is too heavy for me to carry. (同义)
The box is **so** heavy **that** I can't carry it. - He is so young that he can't join the army. (同义)
He is **too** young **to** join the army. - We must keep the classroom clean. (改为被动语态)
The classroom **must be kept** clean by us. - Lucy said, "I am reading a book now." (改为间接引语)
Lucy said (that) she **was reading** a book then.
希望这份详细的总结和练习能帮助你更好地掌握八年级的句型转换！多加练习是掌握语法的关键,加油！
