【点睛】
分析定语从句关键抓住两点：第一、找准先行词；第二、看先行词在定语从句中所作的成分。先行词往往为名词或代词，本题中先行词为名词the travel brochure，再分析先行词the travel brochure在定语从句中所作的成分，将先行词the travel brochure带到从句中可知，只能作地点状语，故确定关系词where。
11．We came to a place ______ they had never paid a visit before.
A．in whichB．to whichC．whatD．which
12．She has a gift for creating an atmosphere for her students ________ allows them to communicate freely with each other.
2．B
解析：B
【解析】
【详解】
考查定语从句。句意：到目前为止，我们已经为贫困儿童筹集了10万英镑，这是相当出乎意料的。前后两个句子中间没有连词，是逗号，故判断为非限制性定语从句，that和it不引导非限制性定语从句，排除AD选项；who用来指代人，which用来指代物或者句子，而在本句中关系代词指代前面句子内容，故选B。
5．D
解析ห้องสมุดไป่ตู้D
【解析】
【分析】
【详解】
考查定语从句。句意：约翰邀请了大约40人参加他的婚礼，其中大多数是家庭成员。先行词为40 people，定语从句中缺少主语，作介词of的宾语，故使用whom。介词之后不能用that。故选D项。
6．D
解析：D
【解析】
【分析】
【详解】
考查定语从句。句意：哈佛大学的校长率先推出了选修课，学生可以选择自己的课程。此处为“介词+关系代词”结构定语从句修饰先行词system，且根据此处表示“学生可以借助系统选择自己的课程”，表示“借助”应用介词by，做介词的宾语且指“系统”应用关系代词which。故选D。
A．on whichB．about whichC．to whichD．by which
7．5G is an exciting mobile technology, ________ will give a massive boost to smart cities and vehicles.
A．whereB．whenC．thatD．which
【点睛】
定语从句的关系词的选择可考虑以下三点：
(1)一看先行词的意义，即分清先行词是指人、指物、时间、地点还是原因（如指物时不能用who或whom，指人时通常不用which等）
(2)二看关系词的句法功能，即分清关系词是担任什么句子成分，是作主语还是宾语、是作定语还是状语等（如作定语通常用whose，有时也用which；作状语要用when, where, why）
A．to whichB．for whichC．at whichD．of which
5．John invited about 40 people to his wedding, most ofare family members.
A．themB．that
C．whichD．whom
6．The president of Harvard pioneered the elective system______ students were able to choose their own courses of study.
高考英语定语从句知识点知识点
一、选择题
1．Car races are recorded and uploaded to YouTube and other video platforms, ______________ they can be viewed repeatedly.
A．whichB．whereC．whenD．there
A．most of themB．most of thatC．most of whatD．most of which
18．Occasions are quite rare ____ I have the time to spend a day with my kids.
A．whoB．whichC．whyD．when
2．Until now, we have raised 100,000 pounds for the poor children, ___________ is quite unexpected.
A．thatB．whichC．whoD．it
3．Optimism is the essential ingredient of top performers,__________we assume separates the high achievers from the rest.
A．thatB．whichC．howD．when
【参考答案】***试卷处理标记，请不要删除
一、选择题
1．B
解析：B
【解析】
【分析】
【详解】
考查定语从句。句意：赛车比赛被记录下来并上传到YouTube和其他视频平台上，在那里可以反复观看。此处是非限定性定语从句，先行词是YouTube and other video platforms，关系词在从句中做地点状语，应使用关系副词where引导。故选B。
A．thatB．as
C．whichD．when
16．Mr. Smith owned this oil painting until the early 1990 s, ____________he gave it to his grandson.
A．whichB．whenC．whereD．who
17．The growth of economy is influenced by a number of factors, ________are beyond our control.
8．—How did you find your way here？
—It was by following the travel brochure _____ the route is clearly clarified.
A．thatB．howC．whereD．which
9．My brother bought a telescope, ______ he could study the star in the night sky.
9．B
解析：B
【解析】
【分析】
【详解】
24．The other two areas ________ the two varieties differ are spelling and pronunciation.
A．in thatB．from whichC．with whichD．in which
25．She's always suggesting ways ______ I can improve my cooking. I know she means well but this really annoys me.
7．D
解析：D
【解析】
【分析】
【详解】
考查定语从句。句意：5G是一项令人兴奋的移动通讯技术，它将极大地推动智能城市和汽车的发展。5G作为先行词是一个事物，定语从句中又缺主语并且前还有逗号，所以不能用that，只能用关系代词which。故此题选D。
8．C
解析：C
【解析】
【分析】
【详解】
考查定语从句。句意：——你怎么找到这里的路的？——通过遵循旅行手册，其中明确的路线。分析句子结构可知，此处是所填空引导的定语从句，先行词为the travel brochure，从句中不缺少主宾表，缺少地点状语，所以用where。故选C项。
(3)三看定语从句的种类，即分清是限制性定语从句还是非限制性定语从句（如that和why通常不引导非限制性定语从句）
3．C
解析：C
【解析】
【分析】
【详解】
考查非限制性定语从句。句意：乐观是优秀表现者的基本要素，我们认为这是成功人士与其他人的区别。分析句子结构可知，此处引导非限制性定语从句，修饰先行词the essential ingredient，且先行词在从句中作主语，指代the essential ingredient应用关系代词which，we assume为插入语。A选项中as引导非限制性定语从句时，有“正如”之意；B选项who在从句中指代人，不符合；D选项that不能引导非限制性定语从句。故选C。
A．asB．whoC．whichD．that
4．The past decades have witnessed China’s many scientific achievements, _____ the development of Shenwei supercomputers is a typical example.
A．whichB．where
C．whatD．who
13．You were really between a rock and a hard place ______ you had to choose between your career and your relationship.
A．whenB．whereC．beforeD．until
A．whichB．whereC．whoseD．its
21．Eventually, the butterfly manages to reach the place____________ it will spend the winter.
A．whichB．whenC．thatD．where