2025年高考总复习英语 第二部分语法专题 第十讲 名词性从句[配套课件]
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第十讲 名词性从句
2025年高考一轮总复习
第二部分 语法专题
名词性从句是历年高考的重点和难点，也是热点。名词性从
句相当于名词，可作主句的主语、宾语、表语和同位语。因此，
名词性从句可分为主语从句、表语从句、宾语从句和同位语从句
(见下表)。
名词性从句 连接词
主语从句 用 that, who, whether, if ( 不用于句首), what ( ＝the
thing that)等连接词引导
宾语从句 用 that ( 可 省 略 ), if, whether (or not), what ( ＝ the
thing which)等连接词引导
表语从句 用 that ( 一 般 不 省 略 ), whether, what ( ＝ the thing
which)等连接词引导
同位语从句 用 that (常指代 news, thought, idea 等词), whether 等
连接词引导
结构 常见句型
It is＋名词＋主语从句 It is a fact/pity that...事实是……/遗憾的是……/It is an honour that...非常荣幸……/It is common knowledge that...……是常识/It is a question＋疑问词...问题是……
一、主语从句
主语从句是在复合句中充当主语的从句，通常放在主句谓语
动词之前或由形式主语 it 代替，而本身放在句子末尾。
1.用 it 作形式主语的结构
结构 常见句型
It is＋形容词＋主语从句 It is clear that...……很清楚/It is surprising that...令人惊讶的是……
It＋不及物动词＋主语从句 It seems that...似乎……/It happens that...碰巧……/It appears that...看来……
It is/has been＋过去分词＋主语从句 It is reported/said/believed that...据报道/据说/人们认为……/It has been proved that...已证实……
(续表)
说明 例句
if 引导的主语从句不可
位于复合句句首 It's unknown whether/if he will come.(正)
Whether he will come or not is unknown.
(正)
If he will come or not is unknown.(误)
It is said/reported that...结
构中的主语从句不可提
前 It is said that Jack will visit our school next
week.(正)
Jack will visit our school next week is said.
(误)
2.主语从句不可位于句首的五种情况
说明 例句
It happens that.../It occurs to sb.that...结构中的主语从句不可提前 It occurred to him that he failed in the
examination.(正)
That he failed in the examination occurred
to him.(误)
It doesn't matter how/ whether...结构中的主语从句不可提前 It doesn't matter whether he is right or not.
(正)
Whether he is right or not doesn't matter.
(误)
(续表)
说明 例句
含主语从句的复合句是疑问句时，主语从句不可提前 Is it likely that it will rain in the evening
(正)
Is that it will rain in the evening likely
(误)
(续表)
说明 例句
作动
词的
宾语 由that引导的宾语从句(that通常可以省略) My father always says (that) no pains, no gains.我的父亲常常说，不劳无获。
由what, whether/if, when, where, who等引导的宾语从句 He went to see who was outside.他过去看是谁在外面。
动词＋间接宾语＋宾语从句 She explained to the teacher why she was late this morning.她向老师解释今早她为什么迟到。
二、宾语从句
宾语从句是在复合句中作宾语的名词性从句，通常放在主句
谓语动词(及物动词)或介词之后。
说明 例句
作介词的宾语(通常由疑问词what, whether, when, where, how等引导) According to what he has said, he must have known the truth.根据他所说的，他一定已经知道了真相。
作形容词的宾语 I am very glad that you can come to the
party.我很高兴你能来参加派对。
it 作形式宾语 The headmaster has made it clear that
smoking is not allowed in the school. 校
长明确表明学校里不准吸烟。
(续表)
说明 例句
否定前移(若主句主语为第一人称，且
谓 语 动 词 为 think, consider, suppose,
believe, expect, fancy, guess, imagine
等时，其后的宾语从句若含有否定意
义，一般要把否定词转移到主句谓语
上，从句谓语用肯定式) We don't think he likes the toy.我们认
为他不喜欢这个玩具。
(续表)
三、表语从句
表语从句是在复合句中作表语的名词性从句，放在系动词之
后，一般结构是“主语＋连系动词＋表语从句”。可以接表语从
句的连系动词有 be、look、remain、seem 等。引导表语从句的引
导词that一般不省略。另外，常用的含有表语从句的结构还有“The
reason why...is that...”“It/This/That is because...” “It/This/That is
why...”等。如：
The reason why he was late for school is that he missed the early
bus.他上学迟到的原因是他错过了早班车。
＝He was late for school.That is because he missed the early bus.
＝He missed the early bus.That is why he was late for school.
四、同位语从句
同位语从句是在复合句中作同位语的名词性从句，通常由 that
引导，对名词做进一步的解释说明或说明名词的具体内容。在表
示疑问或问题的名词 question、problem 等后，也有用疑问词引导
的同位语从句。如：
News came that he had been admitted to a key university.有消息
说他被一所重点大学录取了。
He put forward a question in the meeting who will take charge of
the new department.他在会议上提出谁来负责这个新部门的问题。
五、特别提醒
1.whether、if (是否)引导名词性从句的区别
(1)放在句首引导主语从句或出现 or not 时，只能用 whether
引导。
(2)if 不能引导表语从句。
(3)if 不能引导介词后的宾语从句。
(4)宾语从句是否定句时只能用 if。
(5)discuss 后的宾语从句只能用 whether 引导。
注意：doubt 意为“怀疑”，后接宾语从句时，如果主句是肯
定句，宾语从句用 whether 或 if 引导；如果主句是否定句或疑问
句，宾语从句只能用 that 引导。如：
I doubt whether/if he is fit for the job.我怀疑他是否胜任这份工
作。
I don't doubt that he can do it very well.他能把它做得很好，我
不怀疑。
2.表示建议、命令、要求等意义的名词性从句要用“(should)
＋动词原形”，其中 should 可以省略。如：
My suggestion is that he (should) be told the truth.我的建议是要
告诉他事实。
He insisted that the meeting (should) be held according to the
schedule.他坚持认为会议应该按议程进行。
The general made the order that every soldier (should) be well-
prepared for the coming battle.将军命令每个士兵都要为即将开始
的战斗做好准备。
It is the teacher's command that all the homework (should) be
handed in tomorrow morning.老师要求所有家庭作业都要在明天上
午上交。
单句语法填空
1.(2023· 新高考 Ⅱ卷 · 语法填空)They also need to be ready to
give interviews in English with international journalists.This is _____
they need an English trainer.
why 考查表语从句。句意：这就是他们需要英语培训师的原
因。分析句子结构可知，空处引导表语从句，从句中结构完整，
应该用连接副词连接，上文提到需要培训师的原因，此处是表达
“这就是他们需要英语培训师的原因”之意，应用 why 引导表语
从句。故填 why。
2.(2022·1 月浙江卷·语法填空)Cobb, for her part, started to ask
conference organisers who invited her to speak ________ she could
do so remotely; about three-quarters of the time, they agreed.
whether/if
考查宾语从句。句意：对于她的部分，柯布开始
询问邀请她发言的会议组织者是否可以远程进行。分析句子结构
可知，ask 后面出现了一个宾语从句，宾语从句句意不完整，
whether/if 意为“是否”，符合语境。故填 whether/if。
3.(2022·北京卷·语法填空)It's easy to explain how we determine
________ smells are dangerous or not: we learn.
whether
考查宾语从句的引导词。句意：解释我们怎样确定
气味是不是危险的是容易的：我们学习到的。分析句子结构可知，
空处前的 determine 为及物动词，空处后是“主语＋系动词＋表
语”的句子结构，所以空处的词用来引导宾语从句。再结合句意
及空处后句子中的 or not 可知，此处考查 whether...or not 的搭配。
故填 whether。
4.(2021· 新高考 Ⅰ 卷 · 语法填空)Going to Mount Huangshan
reminds me of the popular Beatle's song “The Long and Winding
Road ”.________ is so breathtaking about the experience is the out-
of-this-world scenes.
What
考查主语从句。句意：去黄山让我想起了甲壳虫乐队
的流行歌曲“The Long and Winding Road”。这次经历令我惊叹的
是那些仙境般的景象。分析句子结构可知，...is so breathtaking about
the experience 作 is 的主语，为主语从句。从句中缺少主语，指
代事情；且空处位于句首。故填 What。
5.It is not a problem ________ we can win the battle; it's just a
matter of time.
whether/if
考查主语从句。句意：我们能否打赢这场战斗不
是问题；这只是迟早的事。根据下文“it's just a matter of time”可
知，此处指“我们能否打赢这场战斗不是问题”，it 是形式主语，
whether/if 引导的从句是真正的主语。故填 whether/if。
6.Over thousands of years, they began to depend less on _______
could be hunted or gathered from the wild, and more on animals they
had raised and crops they had sown.
what
考查宾语从句。句意：在几千年的时间里，他们开始
减少对野外采集和狩猎所得的依赖，而更多地依赖他们饲养的动
物和种植的庄稼。分析句子结构可知，宾语从句部分缺主语。根
据句意，此处缺“什么”之意。故填 what。
7.While they are rare north of 88°, there is evidence _________
they range all the way across the Arctic, and as far south as James Bay
in Canada.
that
考查同位语从句。句意：虽然在纬度 88 度以北很难见
到它们，但有证据表明，它们的活动范围覆盖北极地区，最南至
加拿大的詹姆斯湾。分析句子结构可知，主句为 there be 句型，且
结构完整，空处后为同位语从句，解释说明中心词 evidence 的内
容。故填 that。
8.What students do at college seems to matter much more than
________ they go.
where 考查宾语从句。句意：学生在大学里做什么似乎比去
哪所大学更重要。这里表达去哪所大学，表示地点，作状语。故
填 where。
9.Jerry did not regret giving the comment but felt ________ he
could have expressed it differently.
that 考查宾语从句。句意：杰瑞并不后悔说了这样的话，但
他觉得他可以用不同的方式表达。分析句子结构可知，“...he could
have expressed it differently”是位于 felt 后的宾语从句；从句不缺成
分，符合主谓宾结构；用只起连接作用的连词 that 引导该从句。
故填 that。
10.It is recommended ________ the vaccine be administered in
two doses (剂) to those aged 18 and over.
that
考查主语从句。句意：建议 18 岁及以上的人接种两剂
疫苗。句中 it 作形式主语，从句不缺少成分且句意完整，所以用
连接词 that 引导主语从句。故填 that。
谢谢
21世纪教育网（www.21cnjy.com)
中小学教育资源网站
兼职招聘：
https://www.21cnjy.com/recruitment/home/admin
第十讲 名词性从句
2025年高考一轮总复习
第二部分 语法专题
名词性从句是历年高考的重点和难点，也是热点。名词性从
句相当于名词，可作主句的主语、宾语、表语和同位语。因此，
名词性从句可分为主语从句、表语从句、宾语从句和同位语从句
(见下表)。
名词性从句 连接词
主语从句 用 that, who, whether, if ( 不用于句首), what ( ＝the
thing that)等连接词引导
宾语从句 用 that ( 可 省 略 ), if, whether (or not), what ( ＝ the
thing which)等连接词引导
表语从句 用 that ( 一 般 不 省 略 ), whether, what ( ＝ the thing
which)等连接词引导
同位语从句 用 that (常指代 news, thought, idea 等词), whether 等
连接词引导
结构 常见句型
It is＋名词＋主语从句 It is a fact/pity that...事实是……/遗憾的是……/It is an honour that...非常荣幸……/It is common knowledge that...……是常识/It is a question＋疑问词...问题是……
一、主语从句
主语从句是在复合句中充当主语的从句，通常放在主句谓语
动词之前或由形式主语 it 代替，而本身放在句子末尾。
1.用 it 作形式主语的结构
结构 常见句型
It is＋形容词＋主语从句 It is clear that...……很清楚/It is surprising that...令人惊讶的是……
It＋不及物动词＋主语从句 It seems that...似乎……/It happens that...碰巧……/It appears that...看来……
It is/has been＋过去分词＋主语从句 It is reported/said/believed that...据报道/据说/人们认为……/It has been proved that...已证实……
(续表)
说明 例句
if 引导的主语从句不可
位于复合句句首 It's unknown whether/if he will come.(正)
Whether he will come or not is unknown.
(正)
If he will come or not is unknown.(误)
It is said/reported that...结
构中的主语从句不可提
前 It is said that Jack will visit our school next
week.(正)
Jack will visit our school next week is said.
(误)
2.主语从句不可位于句首的五种情况
说明 例句
It happens that.../It occurs to sb.that...结构中的主语从句不可提前 It occurred to him that he failed in the
examination.(正)
That he failed in the examination occurred
to him.(误)
It doesn't matter how/ whether...结构中的主语从句不可提前 It doesn't matter whether he is right or not.
(正)
Whether he is right or not doesn't matter.
(误)
(续表)
说明 例句
含主语从句的复合句是疑问句时，主语从句不可提前 Is it likely that it will rain in the evening
(正)
Is that it will rain in the evening likely
(误)
(续表)
说明 例句
作动
词的
宾语 由that引导的宾语从句(that通常可以省略) My father always says (that) no pains, no gains.我的父亲常常说，不劳无获。
由what, whether/if, when, where, who等引导的宾语从句 He went to see who was outside.他过去看是谁在外面。
动词＋间接宾语＋宾语从句 She explained to the teacher why she was late this morning.她向老师解释今早她为什么迟到。
二、宾语从句
宾语从句是在复合句中作宾语的名词性从句，通常放在主句
谓语动词(及物动词)或介词之后。
说明 例句
作介词的宾语(通常由疑问词what, whether, when, where, how等引导) According to what he has said, he must have known the truth.根据他所说的，他一定已经知道了真相。
作形容词的宾语 I am very glad that you can come to the
party.我很高兴你能来参加派对。
it 作形式宾语 The headmaster has made it clear that
smoking is not allowed in the school. 校
长明确表明学校里不准吸烟。
(续表)
说明 例句
否定前移(若主句主语为第一人称，且
谓 语 动 词 为 think, consider, suppose,
believe, expect, fancy, guess, imagine
等时，其后的宾语从句若含有否定意
义，一般要把否定词转移到主句谓语
上，从句谓语用肯定式) We don't think he likes the toy.我们认
为他不喜欢这个玩具。
(续表)
三、表语从句
表语从句是在复合句中作表语的名词性从句，放在系动词之
后，一般结构是“主语＋连系动词＋表语从句”。可以接表语从
句的连系动词有 be、look、remain、seem 等。引导表语从句的引
导词that一般不省略。另外，常用的含有表语从句的结构还有“The
reason why...is that...”“It/This/That is because...” “It/This/That is
why...”等。如：
The reason why he was late for school is that he missed the early
bus.他上学迟到的原因是他错过了早班车。
＝He was late for school.That is because he missed the early bus.
＝He missed the early bus.That is why he was late for school.
四、同位语从句
同位语从句是在复合句中作同位语的名词性从句，通常由 that
引导，对名词做进一步的解释说明或说明名词的具体内容。在表
示疑问或问题的名词 question、problem 等后，也有用疑问词引导
的同位语从句。如：
News came that he had been admitted to a key university.有消息
说他被一所重点大学录取了。
He put forward a question in the meeting who will take charge of
the new department.他在会议上提出谁来负责这个新部门的问题。
五、特别提醒
1.whether、if (是否)引导名词性从句的区别
(1)放在句首引导主语从句或出现 or not 时，只能用 whether
引导。
(2)if 不能引导表语从句。
(3)if 不能引导介词后的宾语从句。
(4)宾语从句是否定句时只能用 if。
(5)discuss 后的宾语从句只能用 whether 引导。
注意：doubt 意为“怀疑”，后接宾语从句时，如果主句是肯
定句，宾语从句用 whether 或 if 引导；如果主句是否定句或疑问
句，宾语从句只能用 that 引导。如：
I doubt whether/if he is fit for the job.我怀疑他是否胜任这份工
作。
I don't doubt that he can do it very well.他能把它做得很好，我
不怀疑。
2.表示建议、命令、要求等意义的名词性从句要用“(should)
＋动词原形”，其中 should 可以省略。如：
My suggestion is that he (should) be told the truth.我的建议是要
告诉他事实。
He insisted that the meeting (should) be held according to the
schedule.他坚持认为会议应该按议程进行。
The general made the order that every soldier (should) be well-
prepared for the coming battle.将军命令每个士兵都要为即将开始
的战斗做好准备。
It is the teacher's command that all the homework (should) be
handed in tomorrow morning.老师要求所有家庭作业都要在明天上
午上交。
单句语法填空
1.(2023· 新高考 Ⅱ卷 · 语法填空)They also need to be ready to
give interviews in English with international journalists.This is _____
they need an English trainer.
why 考查表语从句。句意：这就是他们需要英语培训师的原
因。分析句子结构可知，空处引导表语从句，从句中结构完整，
应该用连接副词连接，上文提到需要培训师的原因，此处是表达
“这就是他们需要英语培训师的原因”之意，应用 why 引导表语
从句。故填 why。
2.(2022·1 月浙江卷·语法填空)Cobb, for her part, started to ask
conference organisers who invited her to speak ________ she could
do so remotely; about three-quarters of the time, they agreed.
whether/if
考查宾语从句。句意：对于她的部分，柯布开始
询问邀请她发言的会议组织者是否可以远程进行。分析句子结构
可知，ask 后面出现了一个宾语从句，宾语从句句意不完整，
whether/if 意为“是否”，符合语境。故填 whether/if。
3.(2022·北京卷·语法填空)It's easy to explain how we determine
________ smells are dangerous or not: we learn.
whether
考查宾语从句的引导词。句意：解释我们怎样确定
气味是不是危险的是容易的：我们学习到的。分析句子结构可知，
空处前的 determine 为及物动词，空处后是“主语＋系动词＋表
语”的句子结构，所以空处的词用来引导宾语从句。再结合句意
及空处后句子中的 or not 可知，此处考查 whether...or not 的搭配。
故填 whether。
4.(2021· 新高考 Ⅰ 卷 · 语法填空)Going to Mount Huangshan
reminds me of the popular Beatle's song “The Long and Winding
Road ”.________ is so breathtaking about the experience is the out-
of-this-world scenes.
What
考查主语从句。句意：去黄山让我想起了甲壳虫乐队
的流行歌曲“The Long and Winding Road”。这次经历令我惊叹的
是那些仙境般的景象。分析句子结构可知，...is so breathtaking about
the experience 作 is 的主语，为主语从句。从句中缺少主语，指
代事情；且空处位于句首。故填 What。
5.It is not a problem ________ we can win the battle; it's just a
matter of time.
whether/if
考查主语从句。句意：我们能否打赢这场战斗不
是问题；这只是迟早的事。根据下文“it's just a matter of time”可
知，此处指“我们能否打赢这场战斗不是问题”，it 是形式主语，
whether/if 引导的从句是真正的主语。故填 whether/if。
6.Over thousands of years, they began to depend less on _______
could be hunted or gathered from the wild, and more on animals they
had raised and crops they had sown.
what
考查宾语从句。句意：在几千年的时间里，他们开始
减少对野外采集和狩猎所得的依赖，而更多地依赖他们饲养的动
物和种植的庄稼。分析句子结构可知，宾语从句部分缺主语。根
据句意，此处缺“什么”之意。故填 what。
7.While they are rare north of 88°, there is evidence _________
they range all the way across the Arctic, and as far south as James Bay
in Canada.
that
考查同位语从句。句意：虽然在纬度 88 度以北很难见
到它们，但有证据表明，它们的活动范围覆盖北极地区，最南至
加拿大的詹姆斯湾。分析句子结构可知，主句为 there be 句型，且
结构完整，空处后为同位语从句，解释说明中心词 evidence 的内
容。故填 that。
8.What students do at college seems to matter much more than
________ they go.
where 考查宾语从句。句意：学生在大学里做什么似乎比去
哪所大学更重要。这里表达去哪所大学，表示地点，作状语。故
填 where。
9.Jerry did not regret giving the comment but felt ________ he
could have expressed it differently.
that 考查宾语从句。句意：杰瑞并不后悔说了这样的话，但
他觉得他可以用不同的方式表达。分析句子结构可知，“...he could
have expressed it differently”是位于 felt 后的宾语从句；从句不缺成
分，符合主谓宾结构；用只起连接作用的连词 that 引导该从句。
故填 that。
10.It is recommended ________ the vaccine be administered in
two doses (剂) to those aged 18 and over.
that
考查主语从句。句意：建议 18 岁及以上的人接种两剂
疫苗。句中 it 作形式主语，从句不缺少成分且句意完整，所以用
连接词 that 引导主语从句。故填 that。
谢谢
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