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易错点04 名词性从句
目 录
01 易错陷阱（4大陷阱）
02 举一反三
【易错点提醒一】主语从句连接词what/that/whether/if易混易错点
【易错点提醒二】宾语从句引导词及介词后接宾语从句易混易错点
【易错点提醒三】表语从句引导词及三个句式易混易错点
【易错点提醒四】同位语从句与定语从句易混易错点
03 易错题通关
易错陷阱1：主语从句连接词what/that/whether/if易混易错点。
【分析】 1.that引导主语从句时，无词义，只起连接作用，一般不能省略。what在从句中作主语、宾语、表语和定语。
whether引导的主语从句可放在句首，if引导主语从句在句尾，且用it作形式主语。
It作形式主语，that引导真正的主语从句。
What引导主语从句时，谓语动词一般用复数形式，若表语是复数，则谓语用复数。
易错陷阱2：宾语从句引导词及介词后接宾语从句易混易错点。
【分析】1.doubt用于肯定句时，宾语从句用whether，doubt用于否定句时，宾语从句用that引导。
介词后跟宾语从句时只能用wh-类连接词引导；如：I’m surprised at what he said.
介词后如果跟that从句，要先加it作形式宾语，再加that从句。
如：depend on it that...; rely on it that...; see to it that...等。
宾语从句的时态：主句是现在时或将来时，从句用句意的各种时态。主句是过去时， 从句用相应的过去时态。 从句表示客观事实或真理，从句都用现在时。
易错陷阱3：表语从句引导词及三个句式易混易错点。
【分析】1. as if/as though 引导时，从句可用陈述语气，也可以用虚拟语气。
That is why+结果，表示“那就是.....的原因”。
That is because+原因，表示“那是因为......”。
The reason why/for... is that ..., 表示“......的原因是......”。
易错陷阱4：同位语从句与定语从句易混易错点。
【分析】同位语从句与定语从句的区别
(1) 定语从句中的that既代替先行词，同时以在从句中作某个成分（主语或宾语），而同位语从句中的that是连词，只起连接主句与从句的作用，不充当句中任何成分。
(2) 定语从句是形容词性的，其功能是修饰先行词，对先行词加以限定，描述定的性质或特征；同位语从句是名词性的，其功能是对名词进行补充说明。
1) The news that he told me is that Tom would go abroad next year.（他告诉我的消息是汤姆明年将出国。）
（第一个that引导的从句是定语从句，that在从句中作宾语）
2)The news that Tom would go abroad is told by him.（汤姆将出国的消息是他讲的。）
（同位语从句，that在句中不作任何成分）
【易错点提醒一】 主语从句引导词what/that/whether/if易混易错点
【例1】 （安徽省合肥市第一中学2024-2025学年高三试题） But truly twisted her heart at that time,she said, was the backward and dangerous practices of local midwives and the hardships faced by expectant mothers and newborns in Jiaxian.
易错分析：谓语动词判断错误容易易引起句子结构的误判，两个动词时需先判断主句谓语动词。
【变式1】（24-25高三上·河北保定·期中）She excitedly shared over the phone that due to the large temperature difference between day and night, used to take at least half a month in Henan could be done in just a day in Xinjiang!
【变式2】（24-25高三上·湖南长沙·阶段练习）It is estimated about 60 percent of domestic rice consumption in China is comprised of crops generated from Yuan’ hybrid strain.
【变式3】（24-25高三上·湖北武汉·阶段练习） it was possible to develop a hybrid of self-pollinating plants such as rice was a matter of great debate.
【易错点提醒二】 宾语从句引导词及介词后跟宾语从句易混易错点
【例2】 （24-25高三上·江西南昌·期中）With her return, fans are filled with anticipation, thirsty to discover
novel stories and cultural treasures she will reveal on the platform.
易错分析：本题因为句子成分判断错误引起句意理解不当，从而影响并列连词and之后的句子成分和句意。
【变式1】（24-25高三上·湖北荆州·阶段练习）The participants reported feeling relaxed when they smelled
they described as “fresh air” or “earthy” smells. According to the study, these smells brought back fun memories of their childhoods. For instance, pine trees made some participants think about Christmas.
【变式2】（24-25高三上·江西南昌·期中）Some adults think of you as the “face-down generation” because you use your phone so much and they wonder you deal with school, friends and family.
【变式3】（2022年浙江1月）Cobb, for her party, started to ask conference organizers who invited her to speak ______ she could do so remotely.
【易错点提醒三】 表语从句引导词及三个句式易混易错点
【例3】（2025届辽宁省本溪市高中高三一模试题）Experts aren’t sure exactly how dreams work, but what is certain is they are necessary for our mental health and that everyone has dreams.
易错分析：表语从句三大易混句式掌握不牢，且句意理解不清。
【变式1】（2024届安徽省宿州市高三一模试题）Peter showed me that what matters is you convey your own passion so that you excite other people.
【变式2】（24-25高三上·陕西咸阳·期中）Some people whose intention is to make big money appreciate being given any chance to multiply their income, believing this is their happiness lies.
【变式3】He feels so happy that he followed his heart when choosing what to do with his life, even though it may not be others expected of him.
【易错点提醒四】 同位语从句与定语从句易混易错点
【例4】（24-25高三上·内蒙古赤峰·期中）Stories spread quickly among his friends Tom had lived on a deserted island for over five months after the shipwreck.
易错分析：同位语从句经常修饰的名词记忆不牢，而且句子较长容易引起句意理解错误。
【变式1】（24-25高三上·江苏·期中）There is some doubt one day humans will find cures to deal with deadly diseases, such as cancer and blood diseases.
【变式2】（24-25高三上·四川成都·一模）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.
【变式3】The question should be employed as the manager has not been settled.
1．It’s true astronauts will float in the capsule in the absence of gravity.
2． is surprising to us is that Tom, for whom English was once boring, can speak English fluently as though he were a native speaker.
3． he found the way home after he got lost in the deep forest is not clear to us.
4． it was a genuine job offer or an eye-catching marketing event isn’t really important.
5．It is widely acknowledged Professor Hawking was one of the greatest physicists in the world.
6． makes the parade most exciting is the lion and dragon dance, representing the spirit of strength.
7．After three days’ waiting, there was a little doubt in the mother’s mind the police could find her lost child.
8．The government’s promise it will spend money on the protection of the cultural heritage makes people excited.
9．The question should be responsible for protecting the cultural heritage doesn’t need to be discussed any more.
10．What the doctors really doubt is my mother will recover from the serious disease.
11．It is generally acknowledged that loving your life is the key to happiness lies.
12．If you are addicted to your mobile phone, that’s you should lay it down and be involved in meaningful activities.
13．They were short of experience. That was they had to learn from practiced workers.
14．The little girl who got lost decided to remain she was and waited for her mother.
15．When you plan an exercise routine, the first thing to consider is you expect to improve: heart and lung efficiency, muscle strength or flexibility.
16．What is exciting about the upcoming event is it promises to showcase groundbreaking innovations and cutting-edge technologies, shaping the future of the industry.
17．My face was burning; this was I was embarrassed about how untidy the house was.
18．He noticed that the straight part of the dance was different in the afternoon from it had been in the morning.
19．They had booked a week-long trip to Hawaii. Scott hated warm weather and asked he could just stay at his best friend’s house so that he could snowboard every day.
20．There are many ways you can experience tea culture in China. You can visit a tea plantation in Hangzhou or elsewhere to learn tea is grown and harvested.
21．She says that both Greece and China have rich cultures and traditions dating back to ancient times, and there is so much to learn from each other.
22．We are not sure consequences the storm would bring about, although the weather forecast reported that it could be really destructive.
23．I ask him we’ll go to the zoo, but he doesn’t know.
24．I struggled to understand he had made this decision.
25．If your parents are too strict with you, talk to them and let them know you feel.
21世纪教育网(www.21cnjy.com)易错点04 名词性从句
目 录
01 易错陷阱（4大陷阱）
02 举一反三
【易错点提醒一】主语从句连接词what/that/whether/if易混易错点
【易错点提醒二】宾语从句引导词及介词后接宾语从句易混易错点
【易错点提醒三】表语从句引导词及三个句式易混易错点
【易错点提醒四】同位语从句与定语从句易混易错点
03 易错题通关
易错陷阱1：主语从句连接词what/that/whether/if易混易错点。
【分析】 1.that引导主语从句时，无词义，只起连接作用，一般不能省略。what在从句中作主语、宾语、表语和定语。
whether引导的主语从句可放在句首，if引导主语从句在句尾，且用it作形式主语。
It作形式主语，that引导真正的主语从句。
What引导主语从句时，谓语动词一般用复数形式，若表语是复数，则谓语用复数。
易错陷阱2：宾语从句引导词及介词后接宾语从句易混易错点。
【分析】1.doubt用于肯定句时，宾语从句用whether，doubt用于否定句时，宾语从句用that引导。
介词后跟宾语从句时只能用wh-类连接词引导；如：I’m surprised at what he said.
介词后如果跟that从句，要先加it作形式宾语，再加that从句。
如：depend on it that...; rely on it that...; see to it that...等。
宾语从句的时态：主句是现在时或将来时，从句用句意的各种时态。主句是过去时， 从句用相应的过去时态。 从句表示客观事实或真理，从句都用现在时。
易错陷阱3：表语从句引导词及三个句式易混易错点。
【分析】1. as if/as though 引导时，从句可用陈述语气，也可以用虚拟语气。
That is why+结果，表示“那就是.....的原因”。
That is because+原因，表示“那是因为......”。
The reason why/for... is that ..., 表示“......的原因是......”。
易错陷阱4：同位语从句与定语从句易混易错点。
【分析】同位语从句与定语从句的区别
(1) 定语从句中的that既代替先行词，同时以在从句中作某个成分（主语或宾语），而同位语从句中的that是连词，只起连接主句与从句的作用，不充当句中任何成分。
(2) 定语从句是形容词性的，其功能是修饰先行词，对先行词加以限定，描述定的性质或特征；同位语从句是名词性的，其功能是对名词进行补充说明。
1) The news that he told me is that Tom would go abroad next year.（他告诉我的消息是汤姆明年将出国。）
（第一个that引导的从句是定语从句，that在从句中作宾语）
2)The news that Tom would go abroad is told by him.（汤姆将出国的消息是他讲的。）
（同位语从句，that在句中不作任何成分）
【易错点提醒一】 主语从句引导词what/that/whether/if易混易错点
【例1】 （安徽省合肥市第一中学2024-2025学年高三试题） But truly twisted her heart at that time,she said, was the backward and dangerous practices of local midwives and the hardships faced by expectant mothers and newborns in Jiaxian.
易错分析：谓语动词判断错误容易易引起句子结构的误判，两个动词时需先判断主句谓语动词。
【答案】what
【解析】考查主语从句。句意：但她说，当时真正让她揪心的是当地助产士落后而危险的做法，以及佳县孕妇和新生儿所面临的困境。这里是一个主语从句，从句中缺少主语，表示“当时真正让她揪心的是”，所以用what。
【变式1】（24-25高三上·河北保定·期中）She excitedly shared over the phone that due to the large temperature difference between day and night, used to take at least half a month in Henan could be done in just a day in Xinjiang!
【答案】what
【解析】考查主语从句。句意：她在电话中兴奋地说，由于昼夜温差大，在河南需要半个月才能完成的工作，在新疆一天就能完成！此处引导主语从句，从句缺少主语，指物，应用连接代词what引导。故填what。
【变式2】（24-25高三上·湖南长沙·阶段练习）It is estimated about 60 percent of domestic rice consumption in China is comprised of crops generated from Yuan’ hybrid strain.
【答案】that
【解析】考查主语从句。句意：据估计，中国国内消费的大米中约有60%是由袁隆平的杂交品种生产的。根据句意及空前“It is estimated”可知，此处为it is estimated that的固定句型结构，其中it为形式主语，空处引导主语从句，从句句意完整，不缺少成分，应用连接词that引导，that在名词性从句中无实义，不充当句子成分。故填that。
【变式3】（24-25高三上·湖北武汉·阶段练习） it was possible to develop a hybrid of self-pollinating plants such as rice was a matter of great debate.
【答案】Whether
【解析】考查主语从句。句意：是否有可能培育出像水稻这样的自花授粉植物的杂交品种，仍是一个备受争议的问题。空处引导主语从句，从句中不缺成分，但根据“ a matter of great debate”可知，是否培育出像水稻这样的自花授粉植物的杂交品种是一个备受争议的问题，所以用whether“是否”引导主语从句。该词位于句首，首字母大写。故填Whether。
【易错点提醒二】 宾语从句引导词及介词后跟宾语从句易混易错点
【例2】 （24-25高三上·江西南昌·期中）With her return, fans are filled with anticipation, thirsty to discover
novel stories and cultural treasures she will reveal on the platform.
易错分析：本题因为句子成分判断错误引起句意理解不当，从而影响并列连词and之后的句子成分和句意。
【答案】what
【解析】考查宾语从句。句意：随着李子柒的回归，粉丝们充满了期待，渴望发现她将在平台上揭示的新故事和文化宝藏。根据句意和句子结构可知，空格处是连接词，引导宾语从句，并在从句中作宾语，指事物，用连接代词what引导。故填what。
【变式1】（24-25高三上·湖北荆州·阶段练习）The participants reported feeling relaxed when they smelled
they described as “fresh air” or “earthy” smells. According to the study, these smells brought back fun memories of their childhoods. For instance, pine trees made some participants think about Christmas.
【答案】what
【解析】考查宾语从句。句意：参与者报告说，当他们闻到他们所说的“新鲜空气”或“泥土”气味时，他们感到放松。此处引导宾语从句，且在从句中作described的宾语，指物，应用连接代词what引导，表“什么”。故填what。
【变式2】（24-25高三上·江西南昌·期中）Some adults think of you as the “face-down generation” because you use your phone so much and they wonder you deal with school, friends and family.
【答案】how
【解析】考查宾语从句。句意：有些成年人认为你们是“低头的一代”，因为你们经常使用手机，他们想知道你们是如何处理学校、朋友和家人的关系的。wonder后接宾语从句，从句中不缺主语和宾语，但句意不完整，结合句意可知，此处表示方式，用连接词how。故填how。
【变式3】（2022年浙江1月）Cobb, for her party, started to ask conference organizers who invited her to speak ______ she could do so remotely.
【答案】if/whether
【解析】考查宾语从句。句意：对于她的出席，Cobb开始询问邀请她的组织者是否可以远程进行。显然ask后面出现了一个宾语从句，宾语从句句意不完整，whether/if“是否”符合语境，故填whether或if。
【易错点提醒三】 表语从句引导词及三个句式易混易错点
【例3】（2025届辽宁省本溪市高中高三一模试题）Experts aren’t sure exactly how dreams work, but what is certain is they are necessary for our mental health and that everyone has dreams.
易错分析：表语从句三大易混句式掌握不牢，且句意理解不清。
【答案】that
【详解】考查表语从句。句意：专家们并不完全清楚梦境是如何运作的，但可以确定的是，梦境对我们的心理健康是必要的，而且每个人都会做梦。空处引导表语从句，从句句意完整、成分齐全，应用只起连接作用、无实意的that引导。故填that。
【变式1】（2024届安徽省宿州市高三一模试题）Peter showed me that what matters is you convey your own passion so that you excite other people.
【答案】how
【解析】考查表语从句。句意：彼得告诉我，重要的是你如何表达自己的激情，这样你才能激发别人。空处引导表语从句，从句缺少方式状语，需用连接副词how引导。故填how。
【变式2】（24-25高三上·陕西咸阳·期中）Some people whose intention is to make big money appreciate being given any chance to multiply their income, believing this is their happiness lies.
【答案】where
【解析】考查表语从句。句意：一些想赚大钱的人很感激有机会增加收入，相信这就是他们的幸福所在。空处引导表语从句，lies为不及物动词，意为“所在的地方”，应用where引导，在从句中作地点状语，故填where。
【变式3】He feels so happy that he followed his heart when choosing what to do with his life, even though it may not be others expected of him.
【答案】what
【解析】考查表语从句。句意：他感到很开心，在选择自己的生活时，他听从了自己的内心，即使这可能不是别人对他的期望。分析句子可知，be后接表语从句，从句缺少宾语，指物，用连接代词what。故填what。
【易错点提醒四】 同位语从句与定语从句易混易错点
【例4】（24-25高三上·内蒙古赤峰·期中）Stories spread quickly among his friends Tom had lived on a deserted island for over five months after the shipwreck.
易错分析：同位语从句经常修饰的名词记忆不牢，而且句子较长容易引起句意理解错误。
【答案】that
【解析】考查连接词。句意：“汤姆在船失事后在一个荒岛上生活了五个多月”的故事在他的朋友中迅速传开。空格处为同位语从句的连接词，对于Stories解释说明，从句中句子成分完整，所以用that。故填that。
【变式1】（24-25高三上·江苏·期中）There is some doubt one day humans will find cures to deal with deadly diseases, such as cancer and blood diseases.
【答案】whether
【解析】考查同位语从句。句意：是否有一天人类会找到治疗致命疾病的方法，如癌症和血液疾病，还有些疑问。doubt意思为：怀疑，空处引导同位语从句，说明怀疑的内容，表示“是否”用whether。故填whether。
【变式2】（24-25高三上·四川成都·一模）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.
【答案】that
【解析】考查同位语从句。句意：虽然它们在北纬88度以北很少见，但有证据表明，它们的活动范围横跨北极，向南远至加拿大的詹姆斯湾。空处引导同位语从句，解释说明名词evidence的内容，从句句意完整，且不缺少成分，用连词that引导从句。故填that。
【变式3】The question should be employed as the manager has not been settled.
【答案】who
【解析】考查同位语动词。句意：应该雇用谁当经理的问题还没有解决。分析句子结构可知，这是一个同位语从句，用来解释说明 the question的具体内容。从句缺少主语，且指人，所以用连接代词who引导。故填who。
1．It’s true astronauts will float in the capsule in the absence of gravity.
【答案】that
【详解】考查主语从句。句意：宇航员确实会在没有重力的情况下漂浮在太空舱里。分析句子可知，It是形式主语，真正的主语是空后的从句，该句为意义、结构完整的陈述句，应用that引导。故填that。
2． is surprising to us is that Tom, for whom English was once boring, can speak English fluently as though he were a native speaker.
【答案】What
【详解】考查主语从句。句意：令我们惊讶的是，曾经对汤姆来说很无聊的英语，现在却能流利地说英语，就好像他是英语母语者一样。引导主语从句，从句缺少主语，指事物应用what，首字母大写。故填What。
3． he found the way home after he got lost in the deep forest is not clear to us.
【答案】How
【详解】考查主语从句。句意：我们不清楚他在森林深处迷路后是如何找到回家的路的。引导主语从句，从句缺少方式状语，应用how，首字母大写。故填How。
4． it was a genuine job offer or an eye-catching marketing event isn’t really important.
【答案】Whether
【详解】考查从属连词。句意：这究竟是一份真正的工作邀请，还是一次吸引眼球的营销活动，其实并不重要。whether...or...连接的成分作句子的主语,表示“是……还是……”,设空处是主语从句的引导词,且位于句首,首字母应大写。故填Whether。
5．It is widely acknowledged Professor Hawking was one of the greatest physicists in the world.
【答案】that
【详解】考查固定句型和主语从句。句意：人们普遍认为霍金教授是世界上最伟大的物理学家之一。It is (widely) acknowledged that...是固定句型，意为“人们(普遍)认为……”，其中it作形式主语，连词that引导主语从句，在从句中不作成分，无实义。故填that。
6． makes the parade most exciting is the lion and dragon dance, representing the spirit of strength.
【答案】What
【详解】考查主语从句。句意：游行中最令人兴奋的是舞狮和舞龙，它们代表着力量的精神。空处引导主语从句，从句缺少主语，指物，应用what引导主语从句，单词位于句首，首字母大写。故填What。
7．After three days’ waiting, there was a little doubt in the mother’s mind the police could find her lost child.
【答案】whether
【详解】考查同位语从句。句意：经过三天的等待，这位母亲心里有点怀疑警察是否能找到她丢失的孩子。此处是doubt的同位语从句，连接词表示“是否”，应用whether引导。故填whether。
8．The government’s promise it will spend money on the protection of the cultural heritage makes people excited.
【答案】that
【详解】考查同位语从句。句意：政府承诺将花钱保护文化遗产，这让人们很兴奋。空格处引导的是同位语从句，从句中不缺成分，且句子意思完整，因此空格处用that引导同位语从句，故填that。
9．The question should be responsible for protecting the cultural heritage doesn’t need to be discussed any more.
【答案】who
【详解】考查同位语从句。句意：谁应该负责保护文化遗产的问题不再需要讨论了。空格处引导的是同位语从句，从句中缺少主语，句子表示“谁应该负责保护文化遗产的问题不再需要讨论了”，空格处意为“谁”，用who引导同位语从句，故填who。
10．What the doctors really doubt is my mother will recover from the serious disease.
【答案】whether
【详解】考查表语从句。句意：医生真正怀疑的是我妈妈是否能从重病中恢复过来。空处引导表语从句，且根据句意可知，此处表示“是否”，应用whether引导。故填whether。
11．It is generally acknowledged that loving your life is the key to happiness lies.
【答案】where
【详解】考查表语从句。句意：人们普遍认为，热爱生活是幸福的关键所在。空处引导表语从句，从句缺少地点状语，需用连接副词where引导。故填where。
12．If you are addicted to your mobile phone, that’s you should lay it down and be involved in meaningful activities.
【答案】when
【详解】考查名词性从句。句意：如果你对手机上瘾，那就是你应该放下它并参与有意义的活动的时候。分析句子结构可知，空处应为表语从句引导词，引导词在从句中作时间状语，应用连接副词when。故填when。
13．They were short of experience. That was they had to learn from practiced workers.
【答案】why
【详解】考查表语从句。句意：他们缺乏经验，这就是为什么他们必须向有经验的工人学习。根据句意，空格处应填入一个引导表语从句的连接词。这里“why”引导的表语从句解释了“they were short of experience”这一情况的原因。因此，正确的填空答案是why。故填why。
14．The little girl who got lost decided to remain she was and waited for her mother.
【答案】where
【详解】考查表语从句。句意：迷路的小女孩决定留在原地等待母亲。空处引导表语从句，结合语意，此处表示小女孩留在原来她在的地方，连接词在从句中作地点状语，应该用连接副词where引导从句。故填where。
15．When you plan an exercise routine, the first thing to consider is you expect to improve: heart and lung efficiency, muscle strength or flexibility.
【答案】what
【详解】考查表语从句。句意：当你计划一项日常锻炼时，首先要考虑的是你希望提高什么：心肺效率，肌肉力量或灵活性。空处为表语从句，从句缺少宾语，指物，使用连接代词what。故填what。
16．What is exciting about the upcoming event is it promises to showcase groundbreaking innovations and cutting-edge technologies, shaping the future of the industry.
【答案】that
【详解】考查表语从句。句意：即将到来的活动令人兴奋的是，它承诺展示突破性的创新和尖端技术，塑造行业的未来。空处引导表语从句，从句“it promises to showcase groundbreaking innovations and cutting-edge technologies, shaping the future of the industry.”的成分和意义都完整，用连接词that引导该表语从句。故填that。
17．My face was burning; this was I was embarrassed about how untidy the house was.
【答案】because
【详解】考查表语从句。句意：我的脸火辣辣的；这是因为我对房子这么不整洁感到尴尬。分号前的内容“我的脸火辣辣的。”是结果，分号后的内容“我对房子这么不整洁感到尴尬。”是原因，因此使用because引导表语从句，This/That is/was because…“这/那是因为……”后接原因。故填because。
18．He noticed that the straight part of the dance was different in the afternoon from it had been in the morning.
【答案】what
【详解】考查连接代词。句意：他留意到下午的舞步的直线部分与早上的不同。空格处引导宾语从句，从句中缺少表语，且意义为“……的事物”，所以用what引导。故填what。
19．They had booked a week-long trip to Hawaii. Scott hated warm weather and asked he could just stay at his best friend’s house so that he could snowboard every day.
【答案】if/whether
【详解】考查宾语从句连接词。句意：他们预订了去夏威夷的一周旅行。斯科特讨厌暖和的天气，问他是否可以住在他最好的朋友家里，这样他就可以每天玩滑雪板了。空处引导宾语从句，作动词asked的宾语，从句中不缺少成分，但缺少“是否”的含义，应用if/whether引导。故填if/whether。
20．There are many ways you can experience tea culture in China. You can visit a tea plantation in Hangzhou or elsewhere to learn tea is grown and harvested.
【答案】how
【详解】考查宾语从句。句意：你可以参观杭州或其他地方的茶园，了解如何种植和收获茶叶。空处引导宾语从句，且从句缺少方式状语，应用how来修饰，故填how。
21．She says that both Greece and China have rich cultures and traditions dating back to ancient times, and there is so much to learn from each other.
【答案】that
【详解】考查宾语从句。句意：她说，希腊和中国都有丰富的文化和传统，可以追溯到古代，有很多东西可以相互学习。分析句子结构可知，此处应为连接词引导的宾语从句作says的宾语，从句中不缺少成分，且句意完整，所以此处使用只起连接作用、无实意的that引导。故填that。
22．We are not sure consequences the storm would bring about, although the weather forecast reported that it could be really destructive.
【答案】what
【详解】考查宾语从句。句意：我们不确定这场风暴会带来什么后果，尽管天气预报说它可能非常具有破坏性。引导宾语从句，表示“什么结果”,设空处应用what。故填what。
23．I ask him we’ll go to the zoo, but he doesn’t know.
【答案】when
【详解】考查宾语从句。句意：我问他我们什么时候去动物园，但他不知道。此处为连接词引导宾语从句，从句中不缺主语和宾语，结合句意可知，引导词在从句中作时间状语，所以此处使用连接副词when引导。故填when。
24．I struggled to understand he had made this decision.
【答案】why
【详解】考查宾语从句。句意：我很难理解他为什么做出这个决定。此处引导宾语从句，连接词在从句中作原因状语，应用why引导。故填why。
25．If your parents are too strict with you, talk to them and let them know you feel.
【答案】how
【详解】考查宾语从句。句意：如果你的父母对你太严格，和他们谈谈，让他们知道你的感受。空格处引导宾语从句作know的宾语，从句中不缺主语和宾语，结合句意，此处表示“感觉如何”，所以此处使用连接副词how引导该宾语从句。故填how。
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