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第二讲　名词性从句
?真题体验
1．(2025·北京卷)The truth，though，is ________ could be guessed—there's never anyone else here．Just me，Nick，and the quiet forest．
2．(2024·全国甲卷)On a cool，starry night in mid-September 1870，four men relaxed before a campfire along the Firehole River in __________ is now northwestern Wyoming．
3．(2023·新课标Ⅱ卷)They also need to be ready to give interviews in English with international journalists．This is __________ they need an English trainer．
4．(2022·浙江1月卷)Cobb，for her part，started to ask conference organizers who invited her to speak ____________ she could do so remotely...
?语法精讲
名词性从句是在句子中起名词作用的句子，它的功能相当于名词(短语)，在复合句中可作主语、宾语、表语、同位语等，因此名词性从句又可分为主语从句、宾语从句、表语从句和同位语从句。
主语从句
1．从句作主语时，主句谓语动词一般用单数
※What she offers to her classmates is honesty and happiness．
她带给同学们的是诚实和快乐。
2．it作形式主语
it作形式主语的常见句型有：
(1)It＋be＋形容词(clear，certain，obvious，important，likely，necessary，possible等)＋从句
(2)It＋be＋名词/名词短语(a shame，a pity，an honour，no wonder，good news等)＋从句
(3)It＋be＋过去分词(said，reported，thought，known，believed，expected，concluded等)＋从句
(4)It＋特殊动词或短语(doesn't matter，occurs to sb．，makes no difference等)＋从句
※It isn't likely that I should accept such an offer as that．
我不可能接受像那样的提议。
※It's no wonder that he didn't want to go．
难怪他不想去。
※It is decided that the meeting has been put off until next Monday．
已经决定会议被推迟到下周一了。
※It suddenly occurred to her that Joe was afraid of being alone．
她突然想到乔害怕一个人待着。
3．whether/if引导的主语从句
引导主语从句，表示“是否”，只能用whether；若用it作形式主语，从句为“是否……”的普通陈述句时whether与if可互换。
※It's uncertain whether/if he'll come this evening．
他今天晚上是否会来还不确定。
单句语法填空
1．____________ made the findings interesting is that many Chinese words are used in pinyin，which is the Romanized form of Chinese．
2．(北师大版选择性必修第三册Unit 9)How it is used，____________ it is a blessing or a curse to mankind，depends on mankind and not on the instrument．
3．(译林版选择性必修第一册Unit 4)It is believed ____________ this poem was written by Li Bai in his teenage years．
宾语从句
宾语从句在复合句中起宾语的作用，既可作动词的宾语，也可作介词的宾语(作介词的宾语时必须由wh-疑问词引导)。
1．it作形式宾语
※He has made it clear that the meeting will not be postponed．
他清楚地表明会议不会被推迟。
※I shall see to it that he is taken good care of when you are absent．
你不在的时候，我会确保把他照顾好。
2．含虚拟语气的宾语从句
一个“坚持(insist)”、两个“命令(order/command)”、三个“建议(suggest/recommend/advise)”、三个“要求(demand/require/request)”等词后，宾语从句用虚拟语气，其谓语动词应为“should＋动词原形”，should可以省略。
※The commander ordered that the troops (should) set off at once．
司令员命令部队马上出发。
单句语法填空
1．(外研版必修第三册Unit 3)Although it has been proved that Franklin's experiment took place，more than one scientist has questioned ____________ really happened．
2．(外研版必修第一册Unit 2)At the information desk at the entrance，I asked a lady ________ the shoe section was．
3．She said her ambition was to enter a key university，____________ she would study hard to make her dream come true，and that she would live up to her parents' expectations．
表语从句
1．why与because 引导的表语从句
why与because 引导表语从句时，前者强调结果，后者强调原因。
※I had a cold．That was why I didn't attend school．
我感冒了。那是我没去上学的原因。
※I didn't attend school．That was because I had a cold．
我没去上学。那是因为我感冒了。
[名师点津]
①句子的主语为the reason时，表语从句用that引导，表示原因，不用because；
②由why引导的从句作主语时，表语从句用that引导。
※The reason why she was ill was that she had eaten bad meat．
她生病的原因是她吃了变质的肉。
※Why we decided to put off the match was that the weather was too terrible．
我们决定推迟比赛的原因是天气太糟糕了。
2．as if/though引导的表语从句
as if/though引导的表语从句通常置于系动词look，seem，sound，be等的后面；表语从句既可以采用虚拟语气，也可直接采用陈述语气。
※It sounded as if/though somebody was knocking at the door．
听起来好像有人在敲门。
单句语法填空
1．(译林版必修第二册Unit 3)After all，home is ____________ all family members are together．
2．(人教版必修第三册Unit 4)However，while such disasters brought much sadness and disappointment，the desire to explore the universe did not die．This is ____________ people believe in the importance of carrying on space exploration despite the huge risks．
3．However，what we eat isn't the most important thing．What's important is ________ we eat it with．
同位语从句
同位语从句位于表示概念或思维的抽象名词之后，对该抽象名词起解释说明作用。常见的抽象名词有news，idea，fact，promise，conclusion，theory，question等。
※At first many people were astonished at the conclusion that the earth was not the center of the universe．
起初很多人对地球不是宇宙中心这一结论感到惊讶。
单句语法填空
1．(人教版选择性必修第一册Unit 5)What keeps them from doing so is the fact ____________ chemical farming serves the high demand for food around the world．
2．(译林版选择性必修第二册Unit 1)There is concern ____________ the construction company that built the tower block had not followed fire safety rules．
3．(北师大版选择性必修第一册Unit 1)I had no idea ____________ hydrogen was，and I didn't really want to know，either!
[典例1]The shopkeeper did not want to sell for __________ he thought was not enough．
[典例2]Massive Open Online Courses，called MOOCs，are changing __________people learn in many places．
Ⅰ．单句语法填空
1．(2025·重庆二模)____________ most people don't know is ____________ Sora can do more than just create videos from scratch．
2．(2025·广东湛江二模)A laborer explains ____________ he risks his life to make repairs to the ancient structure．
3．(2025·安徽巢湖二模)The towering peaks seem as if they are natural blockades preventing the bitter wind from entering the zone and that seems to be ____________ the weather here is regulated．
4．(2025·湖北武汉模拟)____________ this is actually achieved is an interesting process．
5．(2025·海南海口二模)It remains to be seen ____________ they will succeed in their attempt to clear up the Bermuda Triangle “mystery” this time around．
Ⅱ．语法与写作
1．Hearing my words，David turned to me tremblingly with tears spilling out of his eyes and expressed _____________________________________________________
_____________________________________________________________________．
听了我的话，大卫颤抖地转过身来，眼泪夺眶而出，他说他已经下定决心要完成越野赛跑。
2．____________________________ was the connection we had formed through words on paper．
重要的是我们通过纸上的文字形成的联系。
3．__________________________________________________________________
the essence of friendship is a profound connection on the basis of mutual compassion and understanding．
我突然意识到，友谊的本质是在相互同情和理解的基础上建立的深厚联系。
Ⅲ．语篇提能练
It was reported 1．____________ there was an accident at the corner of Roman Street this morning．No one saw 2．____________ on earth happened then．A car ran into a truck but fortunately，nobody got injured．3．____________ is responsible for the accident is still under investigation．The police are uncertain about 4．____________ the driver is guilty．5．________ the police should do now is 6．____________ they must find out what led to the accident．They said it was difficult for them to judge because 7．____________ the accident happened was not clear．Perhaps the reason was 8．____________ the driver was too tired to stop the car in time．The driver didn't admit the fact 9．____________ he was driving too fast at the turning．The police doubted 10．____________ what he said was true and decided to make a further investigation．第二讲　名词性从句
?真题体验
1．(2025·北京卷)The truth，though，is what could be guessed—there's never anyone else here． Just me，Nick，and the quiet forest．
2．(2024·全国甲卷)On a cool，starry night in mid-September 1870，four men relaxed before a campfire along the Firehole River in what is now northwestern Wyoming．
3．(2023·新课标Ⅱ卷)They also need to be ready to give interviews in English with international journalists． This is why they need an English trainer．
4．(2022·浙江1月卷)Cobb，for her part，started to ask conference organizers who invited her to speak whether/if she could do so remotely...
?语法精讲
名词性从句是在句子中起名词作用的句子，它的功能相当于名词(短语)，在复合句中可作主语、宾语、表语、同位语等，因此名词性从句又可分为主语从句、宾语从句、表语从句和同位语从句。
主语从句
1．从句作主语时，主句谓语动词一般用单数
※What she offers to her classmates is honesty and happiness．
她带给同学们的是诚实和快乐。
2．it作形式主语
it作形式主语的常见句型有：
(1)It＋be＋形容词(clear，certain，obvious，important，likely，necessary，possible等)＋从句
(2)It＋be＋名词/名词短语(a shame，a pity，an honour，no wonder，good news等)＋从句
(3)It＋be＋过去分词(said，reported，thought，known，believed，expected，concluded等)＋从句
(4)It＋特殊动词或短语(doesn't matter，occurs to sb．，makes no difference等)＋从句
※It isn't likely that I should accept such an offer as that．
我不可能接受像那样的提议。
※It's no wonder that he didn't want to go．
难怪他不想去。
※It is decided that the meeting has been put off until next Monday．
已经决定会议被推迟到下周一了。
※It suddenly occurred to her that Joe was afraid of being alone．
她突然想到乔害怕一个人待着。
3．whether/if引导的主语从句
引导主语从句，表示“是否”，只能用whether；若用it作形式主语，从句为“是否……”的普通陈述句时whether与if可互换。
※It's uncertain whether/if he'll come this evening．
他今天晚上是否会来还不确定。
单句语法填空
1．What made the findings interesting is that many Chinese words are used in pinyin，which is the Romanized form of Chinese．
2．(北师大版选择性必修第三册Unit 9)How it is used，whether it is a blessing or a curse to mankind，depends on mankind and not on the instrument．
3．(译林版选择性必修第一册Unit 4)It is believed that this poem was written by Li Bai in his teenage years．
宾语从句
宾语从句在复合句中起宾语的作用，既可作动词的宾语，也可作介词的宾语(作介词的宾语时必须由wh-疑问词引导)。
1．it作形式宾语
※He has made it clear that the meeting will not be postponed．
他清楚地表明会议不会被推迟。
※I shall see to it that he is taken good care of when you are absent．
你不在的时候，我会确保把他照顾好。
2．含虚拟语气的宾语从句
一个“坚持(insist)”、两个“命令(order/command)”、三个“建议(suggest/recommend/advise)”、三个“要求(demand/require/request)”等词后，宾语从句用虚拟语气，其谓语动词应为“should＋动词原形”，should可以省略。
※The commander ordered that the troops (should) set off at once．
司令员命令部队马上出发。
单句语法填空
1．(外研版必修第三册Unit 3)Although it has been proved that Franklin's experiment took place，more than one scientist has questioned what really happened．
2．(外研版必修第一册Unit 2)At the information desk at the entrance，I asked a lady where the shoe section was．
3．She said her ambition was to enter a key university，that she would study hard to make her dream come true，and that she would live up to her parents' expectations．
表语从句
1．why与because 引导的表语从句
why与because 引导表语从句时，前者强调结果，后者强调原因。
※I had a cold． That was why I didn't attend school．
我感冒了。那是我没去上学的原因。
※I didn't attend school． That was because I had a cold．
我没去上学。那是因为我感冒了。
[名师点津]
①句子的主语为the reason时，表语从句用that引导，表示原因，不用because；
②由why引导的从句作主语时，表语从句用that引导。
※The reason why she was ill was that she had eaten bad meat．
她生病的原因是她吃了变质的肉。
※Why we decided to put off the match was that the weather was too terrible．
我们决定推迟比赛的原因是天气太糟糕了。
2．as if/though引导的表语从句
as if/though引导的表语从句通常置于系动词look，seem，sound，be等的后面；表语从句既可以采用虚拟语气，也可直接采用陈述语气。
※It sounded as if/though somebody was knocking at the door．
听起来好像有人在敲门。
单句语法填空
1．(译林版必修第二册Unit 3)After all，home is where all family members are together．
2．(人教版必修第三册Unit 4)However，while such disasters brought much sadness and disappointment，the desire to explore the universe did not die． This is because people believe in the importance of carrying on space exploration despite the huge risks．
3．However，what we eat isn't the most important thing． What's important is who/whom we eat it with．
同位语从句
同位语从句位于表示概念或思维的抽象名词之后，对该抽象名词起解释说明作用。常见的抽象名词有news，idea，fact，promise，conclusion，theory，question等。
※At first many people were astonished at the conclusion that the earth was not the center of the universe．
起初很多人对地球不是宇宙中心这一结论感到惊讶。
单句语法填空
1．(人教版选择性必修第一册Unit 5)What keeps them from doing so is the fact that chemical farming serves the high demand for food around the world．
2．(译林版选择性必修第二册Unit 1)There is concern that the construction company that built the tower block had not followed fire safety rules．
3．(北师大版选择性必修第一册Unit 1)I had no idea what hydrogen was，and I didn't really want to know，either!
[典例1]The shopkeeper did not want to sell for what he thought was not enough．
[典例2]Massive Open Online Courses，called MOOCs，are changing how people learn in many places．
Ⅰ．单句语法填空
1．(2025·重庆二模)What most people don't know is that Sora can do more than just create videos from scratch．
2．(2025·广东湛江二模)A laborer explains why he risks his life to make repairs to the ancient structure．
3．(2025·安徽巢湖二模)The towering peaks seem as if they are natural blockades preventing the bitter wind from entering the zone and that seems to be how/why the weather here is regulated．
4．(2025·湖北武汉模拟)How this is actually achieved is an interesting process．
5．(2025·海南海口二模)It remains to be seen whether they will succeed in their attempt to clear up the Bermuda Triangle “mystery” this time around．
Ⅱ．语法与写作
1．Hearing my words，David turned to me tremblingly with tears spilling out of his eyes and expressed he had made a firm determination to finish the cross-country run．
听了我的话，大卫颤抖地转过身来，眼泪夺眶而出，他说他已经下定决心要完成越野赛跑。
2．What mattered was the connection we had formed through words on paper．
重要的是我们通过纸上的文字形成的联系。
3．It dawned on me that the essence of friendship is a profound connection on the basis of mutual compassion and understanding．
我突然意识到，友谊的本质是在相互同情和理解的基础上建立的深厚联系。
Ⅲ．语篇提能练
It was reported 1．that there was an accident at the corner of Roman Street this morning．No one saw 2．what on earth happened then．A car ran into a truck but fortunately，nobody got injured．3．Who is responsible for the accident is still under investigation．The police are uncertain about 4．whether the driver is guilty．5．What the police should do now is 6．that they must find out what led to the accident．They said it was difficult for them to judge because 7．how the accident happened was not clear．Perhaps the reason was 8．that the driver was too tired to stop the car in time．The driver didn't admit the fact 9．that he was driving too fast at the turning．The police doubted 10．if/whether what he said was true and decided to make a further investigation．

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