2021届高考英语语法填空之连词与状语从句一：知识储备1．确定填并列连词无提示词，设空前后是两个并列成分，如两个主谓完整的句子、单词、短语等；而且相并列的成分之间是并列、转折、选择或因果关系，此时需填并列连词。
2．3个技巧要熟用技巧1关系分析法分析设空前后两句话的关系，确定用哪个并列连词。
①表并列或顺承关系：用and②表转折关系：用but③表选择关系：用or④表因果关系：用so(因此)，for(因为)⑤表对比关系：用while技巧2搭配法①表并列关系：as well as“也”；both...and...“二者都……”；not only...but also...“不但……而且……”。
②表选择关系：either...or...“不是……就是……”；neither...nor...“既不……也不……”；not...but...“不是……而是……”。
技巧3句型法①祈使句＋and/or十陈述句，如表顺承用and，表转折用or。
②when作并列连词的常用句型：be about to do...when...；be doing...when...；be on the point of doing...when...；had just done...when...；hardly...when...等。
3：确定是状语从句设空前后两个句子之间含有一定的逻辑关系时，应用状语从句的引导词。
3．2个关键点(1)重点关注几组引导词用法让步状语从句though/although，as，even if/though，while，however，whether...or...，whatever，whoever，no matter how/what/which等①动作同时发生：when，whenever，while，as等。
②动作接连发生：as soon as，the minute，immediately，once等。
③先后发生：before，after等。
④动作的延续：since。
⑤动作的终止或开始：till/until。
二：真题精析1．I work not because I have to，_but__ because I want to.解析：考查连词。
与前面的not一起构成not...but句型，该句型意为“不是……而是……”。
2．In much of Asia, especially the so－called “rice bowl” cultures of China, Japan，Korea，_and__ Vietnam, food is usually eaten with chopsticks.解析：句意：在亚洲大部分地区，尤其在中国、日本、韩国和越南的称为“饭碗”文化中，食物经常是用筷子吃的。
China，Japan，Korea和Vietnam之间是并列关系，故用and连接。
3．But the river wasn't changed in a few days _or__ even a few months.解析：句意：但是河流不是几天甚至几个月就改变了的。
根据but及句意判断，此处要填一个表示递进含义的词，故用or。
or even“甚至”。
4．It was time for her to have a new baby, _and__ it was also time for the young panda to be independent.解析：句意：是她有一个新宝宝的时候了，也是小熊猫独立的时候了。
两个完整的独立的句子应该用连词相连。
上下句之间为并列关系，故用and。
并列连词可以连接平行的词、短语或句子。
5．One day, the cow was eating grass _when__ it began to rain heavily.解析：句意：一天，这头奶牛正在吃草，突然下起了大雨。
be doing sth...when...是固定结构，意为“正在做某事……这时……”，when是并列连词。
意为“这时……”。
6．It asks you to act like water; to be flexible as well _as__ strong.解析：句意：它要求你表现得像水一样；柔韧又坚强。
as well as“以及；和”，是固定短语。
用来连接两个并列成分，作用相当于and。
7．Our rooms hadn't been reserved for that week, _but__ for the week after.解析：句意：我们的房间预订的不是那一周，而是后一周。
根据前面的not判断，本空填but，not...but...不是……而是……。
8．_Unless__ you can sleep well, you will lose the ability to focus, plan and stay motivated after one or two nights.解析：考查连词。
句意：除非你能睡好，否则一两个晚上之后，你会失去专注、计划的能力和保持积极性。
Unless除非，如果不。
9．_Although/While/Though__ birds use their feathers for flight, some of their feathers are for other purposes.解析：句意：尽管鸟类用它们的羽毛来飞行，可是它们的羽毛还有一些其他用处。
设空处引导让步状语从句。
10．If you don't understand something, you may research, study, and talk to other people_until/till__ you figure it out.解析：句意：如果你不明白某件事情，你可以去调查、研究并与其他人商讨，直到你弄明白为止。
设空处引导时间状语从句，表示“直到……为止”，故用until/till。
11．Located _where__ the Belt meets the Road, Jiangsu will contribute more to the Belt and Road construction.解析：句意：位于“一带”和“一路”的交汇处，江苏将对“一带一路”的建设贡献更多。
设空处引导地点状语从句，且在从句中作地点状语，因此用where引导。
12．_When/If__ it cried，she rocked it back and forth and gave it little comforting pats.解析：句意：当熊猫宝宝哭的时候/如果熊猫宝宝哭．猫妈妈会轻摇并轻拍它。
根据语境可知用When/if引导时间状语从句，注意在句首，首字母应该大写。
13．_Before__ she could react, I gave her a big hug and told her she didn't need to keep it a secret from me.解析：句意：母亲还未来得及做出反应，我就给了她一个拥抱。
根据句意可知该句用Before引导时间状语从句，表“在……之前”。
14．Tom is so independent that he never asks his parents' opinion _unless__ he wants their support.解析：考查连词。
句意：汤姆是如此独立，以至于他从来不征求父母的意见，除非他想得到他们的支持。
unless除非。
三：课后练习（A）The National museum of China launched 1 (it) online store on Ｍonday as a way to explore the com- bination of the Internet with traditional museums, and to better promote its creative cultural products. Its on- line flagship store 2 ( base) on Tianmao, a 3 ( lead) domestic ( 国内的) shopping site under e-commerce giant Alibaba Group.According to staff, the museum will design themed products 4 digging deep into the stories of its 5 (variety) exhibits and will put forward seasonal products during festivals and holidays.The online museum store will introduce a series of special cultural products themed on the Spring Festival. These will include items 6 as porcelain (瓷器) tea sets and the Spring Festival red envelopes.Promotional 7 (activity) for a series of products themed "Hi, China's Remote Past","The Smell of Bronze" and "Embrace the Spring Festival by Talking and Singing" will be offered later.A number of museums in China are determined to develop the online market potential of cultural products 8 (put) energy into the museums. As a pioneer, the Palace museum in Beijing 9 (open) its online store in October 2010 , and then launched a variety of creative products 10 have attracted the public and won numerous fans.（B）Clothing, mainly featuring the color red,is commonly worn throughout the Chinese New Year because it was once believed 1 red could scare away evil spirits and bad fortune.Then why does red have this miracle power?According to tales and legends, the beginning of the Chinese New Year started with a mythical beast 2 (call) Nian , which would eat villagers, especially 3 (child).For many years, poor villagers lived in fear, 4 ( wish) the first day of the year would pass as soon as possible.Then a god visited and told them to put red paper 5 their doors and to set off firecrackers to scare away 6 beast.The villagers then 7 (understand) that Nian wasafraid of the color red.From8 on, red became the most popular color during the Spring Festival.Now, red represents many other meanings such as happiness, prosperity, warmth, virtue, 9 ( true) and sincerity.So if you are invited to a Chinese friend's during the Spring Festival, you are 10 (high) advised to wear red clothes.。