内容正文:
中考重难点语法第6讲 宾语从句:中考三要素"引导词·语序·时态"全解&过关检测
栏目一:考点梳理
① 知识导图
宾语从句
├── 定义:在复合句中充当宾语的句子
├── 三要素
│ ├── 要素一:引导词
│ │ ├── that(陈述句,无实际意义,可省略)
│ │ ├── whether / if(一般疑问句,"是否")
│ │ └── 特殊疑问词(特殊疑问句,保留原疑问词)
│ │ ├── what, who, whom, whose, which
│ │ ├── when, where, why, how
│ │ └── how + 形容词/副词(how long/how far/how often...)
│ ├── 要素二:语序
│ │ └── 陈述句语序:引导词 + 主语 + 谓语 + 其他
│ └── 要素三:时态
│ ├── 主句为现在时 → 从句用所需时态
│ ├── 主句为过去时 → 从句用相应过去时态
│ └── 客观真理 → 永远用一般现在时
├── 否定转移
│ └── think/believe/suppose/expect + 宾语从句
└── 特殊考点
├── if 与 whether 的区分
├── 宾语从句的简化(疑问词 + to do)
└── it 作形式宾语
② 考点清单
星级
考点
考查形式
★★★
宾语从句引导词的选择
单项选择、完形填空
★★★
宾语从句的陈述句语序
单项选择
★★★
宾语从句的时态呼应
单项选择、语法填空
★★
否定转移
单项选择、句型转换
★★
if 与 whether 的辨析
单项选择
★★
宾语从句简化为"疑问词 + to do"
句型转换、单项选择
★
it 作形式宾语
单项选择
③ 核心讲解
考点1:宾语从句的定义与位置(★)
定义:在复合句中作及物动词或介词宾语的句子。
位置
示例
动词后
I know that he is right.
介词后
I'm thinking about what I should say.
形容词后
I'm sure that he will come.
注意:介词后一般不接 that 引导的宾语从句,但可接 what/whether 等引导的从句。
考点2:要素一——引导词的选择(★★★)
① that(陈述句)
特点
说明
无实际意义
只起连接作用,不充当句子成分
可省略
口语及非正式文体中可省,但考试填空题需根据要求填写
示例:
• I know (that) he is a good student.
• She said (that) she would come the next day.
② whether / if(一般疑问句,"是否")
特点
说明
有实际意义
表示"是否"
不可省略
在句中有实际含义
示例:
• I don't know whether/if he will come.
• She asked whether/if I had finished my homework.
③ 特殊疑问词(特殊疑问句,保留原疑问词)
引导词
功能
示例
what
什么
I know what he wants.
who
谁(主格)
I don't know who did it.
whom
谁(宾格)
I wonder whom you met.
whose
谁的
She asked whose book it was.
which
哪一个
He asked which one I liked.
when
什么时候
I know when he will arrive.
where
哪里
She asked where I lived.
why
为什么
I don't know why he was late.
how
怎样
He asked how I went there.
how long
多长时间
She asked how long the trip would take.
how far
多远
I wonder how far the station is.
how often
多久一次
He asked how often I exercised.
how soon
多久以后
She asked how soon I would finish.
how much
多少/多少钱
I want to know how much it costs.
how many
多少(可数)
He asked how many books I had.
考点3:要素二——语序(陈述句语序)(★★★)
核心规则:宾语从句永远用陈述句语序,即"引导词 + 主语 + 谓语 + 其他"。
错误(疑问语序)
正确(陈述语序)
❌ I don't know where does he live.
✅ I don't know where he lives.
❌ She asked what was he doing.
✅ She asked what he was doing.
❌ Can you tell me how can I get there?
✅ Can you tell me how I can get there?
口诀:宾语从句三要素,引导词、语序、时态要记住。
陈述语序最要紧,主语在前谓在后。
考点4:要素三——时态呼应(★★★)
① 主句为一般现在时(或一般将来时/现在完成时)
从句根据实际需要用任意时态。
主句
从句
示例
一般现在时
一般现在时
I know he is a student.
一般现在时
一般过去时
I know he was late yesterday.
一般现在时
一般将来时
I know he will come tomorrow.
② 主句为一般过去时
从句必须用相应的过去时态(一般现在时→一般过去时,一般过去时→过去完成时,一般将来时→过去将来时)。
主句
从句时态变化
示例
一般过去时
一般现在时 → 一般过去时
She said she liked English.
一般过去时
一般过去时 → 过去完成时
He said he had seen the film.
一般过去时
一般将来时 → 过去将来时
She said she would come the next day.
一般过去时
现在进行时 → 过去进行时
He said he was reading.
③ 客观真理用一般现在时(不受主句时态影响)
示例
说明
The teacher said the earth goes around the sun.
客观真理,从句永远用一般现在时
My father told me that light travels faster than sound.
科学事实,不受主句影响
口诀:主现从任意,主过从过去,真理永远现在时。
考点5:否定转移(★★)
核心规则:当主句谓语为 think, believe, suppose, expect, imagine 等表示"认为/猜想"的动词时,如果从句要表达否定意义,通常把否定转移到主句上。
原句(从句否定)
否定转移(主句否定)
I think he is not right.
I don't think he is right.
示例:
• ❌ I think he won't come. → ✅ I don't think he will come.
• ❌ I believe she isn't honest. → ✅ I don't believe she is honest.
注意:
• 否定转移的句子,反意疑问句与从句保持一致
- I don't think he is right, is he?
• 主句主语若不是第一人称(I/we),不进行否定转移
- She thinks he isn't right.(不转移)
考点6:if 与 whether 的辨析(★★)
两者可互换的情况:宾语从句中表示"是否"时,两者均可使用。
• I don't know if/whether he will come.
只能用 whether 的情况:
情况
示例
从句中有 or not 时
I don't know whether he will come or not.
介词后
I'm thinking about whether I should go.
动词不定式前
She doesn't know whether to stay or leave.
句首主语从句
Whether he comes doesn't matter.
与 to do 连用
I don't know whether to go.
注意:if 引导宾语从句时意为"是否";引导条件状语从句时意为"如果"。需根据语境区分。
考点7:宾语从句的简化——"疑问词 + to do"(★★)
当宾语从句的主语与主句主语一致,或从句主语是主句中的宾语时,可将宾语从句简化为"疑问词 + 动词不定式"。
宾语从句
简化形式
I don't know what I should do.
I don't know what to do.
She asked how she could get there.
She asked how to get there.
He doesn't know which one he should choose.
He doesn't know which one to choose.
注意:只有疑问词引导的宾语从句才能简化,that 引导的不能。
考点8:it 作形式宾语(★)
结构:主语 + 动词 + it + 形容词/名词 + that 从句 / to do
示例
说明
I find it important that we should study hard.
it 代替 that 从句
She thinks it necessary to learn a foreign language.
it 代替不定式
He made it clear that he wouldn't go.
it 代替 that 从句
考点:某些固定句型中 it 不可省略。
栏目二:易错点拨
【易错1】宾语从句语序用成疑问语序
❌ 错误:Can you tell me where is the station?
✅ 正确:Can you tell me where the station is?
【错因分析】受特殊疑问句影响,学生容易在宾语从句中沿用疑问语序。
【避坑技巧】
记住口诀:"宾从语序陈述序,主语永远在谓前。"
判断方法:把从句单独拿出来看,如果是"引导词 + 主语 + 谓语"就是正确的;如果是"引导词 + 助动词/be动词 + 主语"就错了。
【易错2】主句过去时,从句时态不呼应
❌ 错误:She said she will come tomorrow.
✅ 正确:She said she would come the next day.
【错因分析】主句为过去时,从句需用过去将来时;且时间状语也要相应变化(tomorrow → the next day)。
【避坑技巧】
直接引语
宾语从句
一般现在时
一般过去时
一般过去时
过去完成时
一般将来时
过去将来时
现在进行时
过去进行时
现在完成时
过去完成时
【易错3】客观真理的时态判断
❌ 错误:He told us that the earth went around the sun.
✅ 正确:He told us that the earth goes around the sun.
【错因分析】误以为主句过去时,从句一律用过去时。
【避坑技巧】
客观真理、自然现象、科学事实、格言谚语在宾语从句中永远用一般现在时,不受主句时态限制。
【易错4】否定转移
❌ 错误:I think he isn't a good student.
✅ 正确:I don't think he is a good student.
【错因分析】think 类动词后的宾语从句否定习惯转移到主句。
【避坑技巧】
主句谓语为 think / believe / suppose / expect / imagine,且主语为第一人称(I / we)时,从句否定转移到主句。
【易错5】if / whether 用法混淆
❌ 错误:I'm not sure if to go or not.
✅ 正确:I'm not sure whether to go or not.
【错因分析】if 后不能直接接动词不定式,whether 可以。
【避坑技巧】
以下情况只能用 whether:
• whether + to do ✅ / if + to do ❌
• 介词 + whether ✅ / 介词 + if ❌
• whether...or not ✅ / if...or not ❌(部分教材认为 if...or not 也可用,但考试以 whether 为准)
【易错6】从句简化时主句与从句主语的关系
❌ 错误:I don't know what does he do.
✅ 正确:I don't know what he does.
✅ 正确(简化):I don't know what to do.
【错因分析】混淆了宾语从句的语序与简化规则。
【避坑技巧】
宾语从句的语序问题是"引导词 + 主语 + 谓语";简化为"疑问词 + to do"时不再出现从句主语。
栏目三:过关检测
A组·基础达标
I. 选择合适的引导词填空(that / if / whether / what / who / where / when / how)。
1. I know ______ he is a doctor.
2. She asked me ______ I liked music.
3. I don't know ______ he will come tomorrow.
4. Can you tell me ______ the library is?
5. He wants to know ______ book is on the desk.
II. 将下列句子合并为含宾语从句的复合句。
6. He is a good student. I think.
→ I think ______ ______ a good student.
7. Where does she live? I don't know.
→ I don't know ______ she ______.
8. Will it rain tomorrow? I wonder.
→ I wonder ______ it ______ rain tomorrow.
9. Why was he late? She asked.
→ She asked ______ he ______ late.
10. The earth is round. The teacher said.
→ The teacher said ______ the earth ______ round.
B组·能力提升
I. 单项选择。
11. —Do you know ______?
—Yes, it's about ten minutes' walk.
A. how far is the park B. how far the park is
C. how long the park is D. how long is the park
12. She said that she ______ to Beijing the next week.
A. will go B. would go C. goes D. went
13. I don't think he ______ the exam, because he didn't study hard.
A. passed B. passes C. will pass D. would pass
14. —Could you tell me ______?
—Sure. Walk along this road and turn left at the second crossing.
A. where is the nearest bank B. where the nearest bank was
C. where the nearest bank is D. how can I get to the bank
15. The teacher asked me ______ I finished my homework or not.
A. if B. that C. whether D. what
II. 单句改错(每句只有一处错误)。
16. Could you tell me how can I get to the station?
17. He said that he has finished his homework.
18. I don't know if he comes tomorrow or not.
C组·中考实战
I. 语法填空(原创模拟)。
阅读下面短文,在空白处填入一个适当的单词或括号内单词的正确形式。
Last week, our English teacher asked us 19.______ we liked learning English. Most students said 20.______ they enjoyed it, but some said it was difficult for them.
One student asked the teacher 21.______ he could remember new words quickly. The teacher told 22.______ (we) that there were many good ways. She said that making word cards 23.______ (be) a useful method, and she also suggested that we should read more English books.
She explained 24.______ important it was to practice every day. She said, "I believe that every student 25.______ (have) the ability to learn English well if he or she works hard."
She also told us that Rome 26.______ (not build) in a day. I think 27.______ I will work harder from now on. I am sure that I 28.______ (make) great progress in the future.
II. 单项选择(原创模拟,贴近中考难度)。
29. —I wonder ______.
—He is a famous scientist from China.
A. who is he B. who he is C. what he is D. whose is he
30. She said that she ______ the book twice and it was really interesting.
A. has read B. had read C. would read D. reads
31. —Do you know ______ to the airport?
—About forty minutes by taxi.
A. how long it takes B. how far it is
C. how long does it take D. how far is it
栏目四:答案与解析
【答案速查】
题号
答案
题号
答案
1
that
17
has → had
2
if/whether
18
if → whether
3
if/whether
19
whether/if
4
where
20
that
5
whose
21
how
6
that he is
22
us
7
where; lives
23
was
8
if/whether; will
24
how
9
why; was
25
has
10
that; is
26
wasn't built
11
B
27
that(可省略)
12
B
28
will make
13
C
29
B
14
C
30
B
15
C
31
A
16
how can I → how I can
【详细解析】
A组·基础达标
1. that — 从句为陈述句,用 that 引导。
2. if/whether — 从句由一般疑问句转换而来,意为"是否"。
3. if/whether — 同上,表示"是否(明天他会来)"。
4. where — 从句由特殊疑问句"Where is the library?"转换而来,保留特殊疑问词 where。
5. whose — 询问"谁的书",用 whose。
6. that he is — 陈述句作宾语从句,用 that 引导,语序为陈述语序。
7. where; lives — 特殊疑问句变宾语从句:where + 主语 + 谓语(陈述语序),she 为三单,live 加 -s。
8. if/whether; will — 一般疑问句变宾语从句用 if/whether,时态保持将来时。
9. why; was — 特殊疑问句变宾语从句,主句过去时,从句用过去时。
10. that; is — 客观真理在任何情况下用一般现在时。
B组·能力提升
11. B — 宾语从句用陈述语序,排除 A、D;由答语"大约十分钟的步行路程"可知问的是距离,用 how far。故选 B。
12. B — 主句 said 为过去时,从句用过去将来时 would go。
13. C — 否定转移:I don't think + 从句,从句用陈述语序;根据语境用将来时 will pass。
14. C — Could you tell me 后接陈述语序,排除 A、D;由答语可知是问"最近的银行在哪儿",用 where...is。故选 C。
15. C — 从句中有 or not,只能用 whether。
16. how can I → how I can — 宾语从句用陈述语序。
17. has → had — 主句 said 为过去时,从句用过去完成时 had finished。
18. if → whether — 从句中有 or not,只能用 whether。
C组·中考实战
19. whether/if — 由主句 asked 和从句含义"是否喜欢学英语"可知填 whether/if。
20. that — 从句为陈述句,用 that 引导。
21. how — 根据语境"怎样能快速记住单词",填 how。
22. us — told 是动词,后接人称代词宾格。
23. was — 主句 said 为过去时,从句用一般过去时;动名词短语 making word cards 作主语,视为单数,用 was。
24. how — 感叹句作宾语从句,修饰形容词 important 用 how。
25. has — 主句 believe 为一般现在时,从句根据实际用一般现在时;every student 为单数,用 has。
26. wasn't built — 罗马城"不被一天建成",用一般过去时被动语态。
27. that — think 后接陈述句,用 that(可省略)。
28. will make — in the future 提示用一般将来时。
29. B — 宾语从句用陈述语序,排除 A、D;答语"他是一位来自中国的著名科学家"说明问的是"他是谁",用 who he is。故选 B。
30. B — 主句 said 为过去时,从句用过去完成时 had read。
31. A — 宾语从句用陈述语序,排除 C、D;答语"乘出租车大约四十分钟"说明问的是时间,用 how long it takes。故选 A。
附:本讲速记卡
宾语从句·核心考点速记
🔹 三要素口诀:
宾语从句三要素,引导词语序时态要记住。
引导词分三种:that 陈述,if/whether 疑,
特殊疑问词保留,句意完整别忘记。
🔹 语序口诀:
宾语从句语序定,陈述语序要记清。
主语永远在谓前,助词 be 不提前。
🔹 时态口诀:
主句现在时,从句任意用;
主句过去时,从句倒退一格;
客观真理永不变,永远用一般现在时。
🔹 否定转移口诀:
think, believe, suppose, expect,
主句第一人称时,
从句否定主句移,I don't think 是正确。
🔹 if / whether 辨析:
是否两可 if/whether,只有 whether 接 to do,
句中有 or not 也选 whether。
🔹 简化口诀:
疑问词 + to do,从句主语与主句同,
省去主语简单化,that 从句不能简。
本讲结束——完成以上练习后,建议对照解析逐题订正,将错题记录到"易错本"中,考前重点复习。
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