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高中的定语从句的考点
定语从句，一个简单句跟在一名词或代词后(先行词)进行修饰限定，就叫做定语从句。下面要为大家分享的就是高中的定语从句，希望你会喜欢！
高中英语定语从句知识点
(一)定语从句一般由关系代词和关系副词引导
1、关系代词:who, whom, whose, which, that, as
2、关系副词:when, where, why
关系代词和关系副词必须位于从句之首,主句先行词之后,起着连接先行词和从句的作用, 同时在从句中又充当句子成分。
e.g. She is the girl who sings best of all.(关系代词who在从句中作主语)
The comrade with whom I came knows French.(whom在从句中作介词with的宾语)
3、关系代词和关系副词的用法:1)当先行词为人时用who 作主语,whom作宾语;2)当先行词为物或整个句子时用which ,可作主语或宾语;3)先行词为人、物时用that ,可作主语或宾语;4)whose用作定语,可指人或物;5)关系副词when(指时间,在定语从句中作时间状语,where(指地点,在定语从句中作地点状语),why(指原因,在定语从句中作原因状语)。
(二)限制性定语从句与非限制性定语从句
1、限制性定语从句:从句与主句关系密切,去掉从句,主句意义不完整,甚至不合逻辑。
e.g. I was the only person in our office who was invited.(去掉定语从句,意思就不完整)
2、非限制性定语从句:从句对先行词关系不密切,去掉定从句,意思仍然完整。形式上用逗号隔开,不能that用引导。
e.g. Tom's father, who is over sixty, still works hard day and night.(who引导非限制性定语从句,整个句子可分成两句来翻译)
(三)使用定语从句时特别注意的几个问题
1、that与which的区别。
1)用that而不用 which的情况:①先行词为不定代词all, anything, nothing, …;②先行词有最高级修饰,有序数词修饰;③先行词有only, very, any等词修饰;④先行词既有人又有物时。
e.g. There is nothing that can prevent him from doing it. 没有什么能阻止他不干那件事。
The first place that they visited in Guilin was Elephant Trunk Hill. 在桂林他们所参观的第一个地方是象鼻山。
This is the best film that I have ever seen. 这部电影是我看过的最好的一部。
Mr Smith is the only foreigner that he knows. 史密斯先生是他认识的唯一的外国人。
2)用which而不用 that的情况:①引导非限制性定语从句;②代表整个主句的意思;③介词 + 关系代词。
e.g. He had failed in the maths exam, which made his father very angry. 他数学考试没有及格,这使他的'父亲很生气。
This is the room in which my father lived last year. 这是父亲去年居住过的房子。
3)as引导定语从句时的用法
①as引导限制性定语从句通常用于the same … as, such … as结构中。
e.g. I want the same shirt as my friend's. 我要一件跟我朋友一样的衬衫。
Such machines as are used in our workshop are made in China. 我们车间使用的这种机器是中国制造的。
②as引导非限制性定语从句既可放在主句之前,也可放在主句之后,用来修饰整个句子。通常用下列句型:as is known to all, as is said, as is reported, as is announced, as we all know, as I expect 等。
e.g. As I expected, he got the first place again in this mid-term examination. 正如我所预料的那样,他在这次期中考试中又获得了第一名。
3)as 引导非限制性定语从句时与which的区别
①当主句和从句语义一致时,用as;反之,用which来引导非限制性定语从句。
e.g. He made a long speech, as we expected.
He made a long speech, which was unexpected.
②当非限制定语从句为否定时,常用which引导。
e.g. Tom drinks a lot every day, which his wife doesn't like at all.
2. 关系代词在从句中作主语时,从句的谓语动词单数还是用复数应由先行词决定。
e.g. The man who lives downstairs speaks English fluently. 住在楼下的那个人英语说得很流利。
The students who are in Grade Three are going to climb the hill tomorrow.
3.定语从句有时不直接紧靠先行词,中间由一个定语、状语或谓语隔开。
e.g. There is an expression in his eyes that I can't understand.
4. 引导定语从句的关系副词有时可以用"介词 + which"来代替。
e.g. October 1, 1949 was the day on which ( = when ) the People's Republic of China was founded.
5. 当定语从句中谓语动词是带介词或副词的固定短语动词时,短语动词的各个固定部分不要拆开。
e.g. The sick man whom she is looking after is her father.
6. 介词在关系代词前,只能用which和whom,且不能省略;介词在句尾,关系代词可有which, that, whom, 口语中也可用who,且可省略。
e.g. The man (whom/ who/ that) you were talking about has come to school.
高中英语定语从句习题
一、把下列每对句子合并成含有定语从句的主从复合句:
1. The fan is on the desk. You want it.
2. The man is in the next room. He brought our textbooks here yesterday.
3. The magazine is mine. He has taken it away.
4. The students will not pass the exam . They don't study hard.
5. The woman is our geography teacher. You saw her in the park.
6. The letter is from my sister. I received it yesterday.
7. The play was wonderful. We saw it last night.
8. The train was late. It was going to Nanning.
9. The boy is my brother. He was here a minute ago.
10. The tree is quite tall. He is climbing it.
11. Here is the girl. Her brother works in this shop.
12. That's the child. We were looking at his drawing just now.
13. This is the boy. His sister is a famous singer.
14. I want to talk to the boys. Their homework haven't been handed in.
15. Is that the woman? Her daughter is in my class.
16. He used to live in a big house. In front of it grew many banana trees.
17. They passed a factory. At the back of the factory there were rice fields.
18. The soldier ran to the building. On the top of it flew a flag.
19. In the evening they arrived at a hill. At the foot of the hill there was a temple.
20. She came into a big room. In the middle of it stood a large table.
二、根据句子意思,在第一个空白处填入介词,在第二个填入关系代词whom或which:
1. The person ________ ________ I spoke just now is the manager that I told you about.
2. The pencil ________ ________ he was writing broke.
3. Wu Dong, ________ ________ I went to the concert, enjoyed it very much.
4. The two things ________ ________ Marx was not sure were the grammar and some of the idioms of English.
5. Her bag, ________ ________ she put all her books, has not been found.
6. The stories about the Long March, ________ ________ this is one example, are well written.
三、选择填空:
1. The man ____ visited our school yesterday is from London.
A. who B. which C. whom D. when
2. The woman ____ is talking to my mother is a friend of hers.
A. whose B. who C. whom D. which
3. Because of my poor memory, all ____ you told me has been forgotten.
A. that B. which C. what D. as
4. Do you remember those days ____ we spent along the seashore very happily?
A. when B. where C. which D. who
5. Tom did not take away the camera because it was just the same camera ____ he lost last week.
A. which B. that C. whom D. as
6. Those ____ want to go please sign their names here.
A. whom B. which C. who D. when
7. Where is the man ____ I met this morning?
A. when B. where C. which D. who
8. Who is the woman ____ is sweeping the floor over there?
A. who B. / C. that D. when
9. The man ____ you talked just now is a worker.
A. who B. whom C. to whom D. to who
10. The man ____ you are going to make friends is my father's neighbour.
A. with whom B. when C. to whom D. which
11. The doctor ____ is leaving for Africa next month.
A. the nurse is talking to him B. whom the nurse is talking
C. the nurse is talking to D. who the nurse is talking
12. The man ____ around our school is from America.
A. which you showed B. you showed him C. you showed D. where you showed
13. He talked about a hero ____ no one had ever heard.
A. of whom B. from whom C. about that D. who
14. In fact the Swede did not understand the three questions ____ were asked in French.
A. where B. who C. in which D. which
15. Have you read the book ____ I lent to you?
A. that B. whom C. when D. whose
16. Finally, the thief handed over everything ____ he had stolen to the police.
A. that B. which C. whatever D. all
17. The foreign guests, ____ were government officials, were warmly welcomed at the airport.
A. most of them B. most of that C. most of whom D. most of those
18. This is the very letter ____came last night.
A. who B. which C. that D. as
19. I know only a little about this matter; you may ask ____ knows better than I.
A. whoever B. whomever C. anyone D. the one
20. This is the school ____ we visited three days ago.
A. where B. / C. when D. what
21. This is the factory ____ we worked a year ago.
A. where B. that C. which D. on which
22. Nearby were two canoes ____ they had come to the island.
A. which B. in which C. that D. /
23. Jack is pleased with ____ you have given him and all ____ you have told him.
A. that, what B. what, that C. which, what D. that, which
24. Do you work near the building ____ colour is yellow?
A. that B. which C. its D. whose
25. In the dark street, there wasn't a single person ____ she could turn for help.
A. whom B. who C. to whom D. form whom
26. Is this school ____ we visited three years ago?
A. the one B. which C. that D. where
27. Is this the school ____ we visited three years ago?
A. the one B. where C. in which D. /
28, How many students are there in your class ____ homes are in the country?
A. whose B. who C. whom D. which
29. Alice received an invitation from her boss, ____ came as a surprise.
A. it B. which C. that D. he
30. The train was crowded and I had to get into a carriage ____ already seven other people.
A. when there were B. which there were C. that there were D. where there were
31. I live in the house ____ windows face south.
A. which B. whose C. where D. in that
32. ---- What game is popular with them? ---- The ____ most is tennis.
A. game they like it B. game they like C. best game they like D. best game they like it
33. They stayed with me three weeks, ____ they drank all the wine I had.
A. which B. which time C. during which time D. during which
34. The room ____ Mr White lives is not very large.
A. that B. which C. where D. when
35. Don't forget the day ____ you were received into the Youth League.
A. when B. that C. at which D. where
36. I've finished writing the novel, ____ is to be published next month.
A. that B. what C. which D. when
37. He returned home safe and sound after a fierce battle, ____ was unexpected.
A. which B. as C. that D. it
38. ____ we is known to all, English is not very difficult to learn.
A. What B. As C. That D. Which
39. The old man had three sons, all of ____ died during World War Ⅱ.
A. whose B. that C. whom D. who
40. I have bought two pens, ____ write well.
A. none of which B. neither of which C. both of which D. all of which
41. Do you know the reason ____ she has changed her mind?
A. why B. which C. for that D. of which
42. He failed in the exam, ____ proves that he wasn't working hard enough.
A. which B. what C. it D. that
43. During the week ____ he tried to collect materials for his article.
A. following B. followed C. to follow D. that followed
44. ____ was expected, he succeeded in the exam.
A. It B. Which C. As D. That
45. He studied hard and later became a well-known writer, ____ his father expected.
A. that was what B. what was that C. and which was D. which was what
46. We should read such books ____ will make us better and wiser.
A. when B. as C. whose D. what
47. You must show my wife the same respect ____ you show me.
A. when B. as C. whose D. what
48. He is absent ____ is often the case.
A. what B. which C. who D. as
49. It is the first time ____ I have come to your city.
A. that B. which C. what D. when
50. Who ____ has the same idea as it will do it in this way.
A. who B. that C. whom D. which
51. I shall never forget those years ____ I lived in the country with the farmers, ____ has a great effect on my life.
A. that, which B. when, which C. which, that D. when, who
52. This is the only book ____ I can find.
A. that B. which C. it D. with which
53. I don't like ____ you speak to her.
A. the way B. the way in that C. the way which D. the way of which
54. That is one of those books that ____ worth reading.
A. is B. are C. has D. have
55. This is the only one of the students whose handwriting ____ the best.
A. is B. are C. has D. have
56. There was ____ to prevent the accident.
A. something could do B. anything we could do
C. nothing we couldn't do D. nothing we could do
高中英语语法定语从句的思维导图
【导语】 英语语法让很多学生都头疼，因为复杂难懂的句式和词组有时难以记忆。为大家整理了英语语法大全，希望对同学们的英语语法学习有所帮助。
概念
被修饰的词叫先行词。定语从句不同于单词作定语的情况，它需要放在被修饰的词(即先行词)之后。定语从句一般由关系代词来引导。关系代词必须放在定语从句之首。定语从句(Attributive Clauses)在句中做定语，修饰一个名词或代词，被修饰的名词,词组或代词即先行词。定语从句通常出现在先行词之后，由关系词(关系代词或关系副词)引出。
关系代词引导的定语从句
关系代词所代替的先行词是人或物的名词或代词，并在句中充当主语、宾语、定语等成分。关系代词在定语从句中作主语时，从句谓语动词的人称和数要和先行词保持一致。
1)who, whom, that
这些词代替的先行词是人的名词或代词，在从句中所起作用如下：
Is he the man who/that wants to see you?
他就是想见你的人吗?(who/that在从句中作主语)
He is the man whom/ that I saw yesterday.
他就是我昨天见的那个人。(whom/that在从句中作宾语)
2) Whose 用来指人或物，(只用作定语, 若指物，它还可以同of which互换), 例如：
They rushed over to help the man whose car had broken down. 那人车坏了，大家都跑过去帮忙。
Please pass me the book whose (of which) cover is green. 请递给我那本绿皮的书。
3)which, that
它们所代替的先行词是事物的名词或代词，在从句中可作主语、宾语等，例如：
A prosperity which / that had never been seen before appears in the countryside. 农村出现了前所未有的繁荣。(which / that在句中作主语)
The package (which / that) you are carrying is about to come unwrapped. 你拿的包快散了。(which / that在句中作宾语)
关系副词引导的'定语从句
关系副词可代替的先行词是时间、地点或理由的名词，在从句中作状语。
1)when, where, why
关系副词when, where, why的含义相当于"介词+ which"结构，因此常常和"介词+ which"结构交替使用，例如：
There are occasions when (on which) one must yield. 任何人都有不得不屈服的时候。
Beijing is the place where (in which) I was born. 北京是我的出生地。
Is this the reason why (for which) he refused our offer? 这就是他拒绝我们帮助他的理由吗?
2)that代替关系副词
that可以用于表示时间、地点、方式、理由的名词后取代when, where, why和"介词+ which"引导的定语从句，在口语中that常被省略，例如：
His father died the year (that / when / on which) he was born. 他父亲在他出生那年逝世了。
He is unlikely to find the place (that / where / in which) he lived forty years ago. 他不大可能找到他四十年前居住过的地方。
判断关系代词与关系副词
方法一： 用关系代词，还是关系副词完全取决于从句中的谓语动词。及物动词后面无宾语，就必须要求用关系代词;而不及物动词则要求用关系副词。例如：
This is the mountain village where I stayed last year.
I'll never forget the days when I worked together with you.
判断改错(注：先显示题，再显示答案，横线;用不同的颜色表示 出。)
(错) This is the mountain village where I visited last year.
(错) I will never forget the days when I spent in the countryside.
(对) This is the mountain village (which) I visited last year.
(对) I'll never forget the days (which) I spent in the countryside.
习惯上总把表地点或时间的名词与关系副词 where, when联系在一起。此两题错在关系词的误用上。
方法二： 准确判断先行词在定语从句中的成分(主、谓、宾、定、状)，也能正确选择出关系代词/关系副词。
高一英语语法定语从句课件
定语从句是高中英语第一大语法内容，必须清晰掌握。接下来我为大家整理了高一英语学习的内容，一起来看看吧!
高一英语重点语法--定语从句
01
定语从句基本概念
在复合句中，修饰名词或代词的从句叫定语从句。
引导定语从句的词叫关系词。
被修饰的名词或代词叫先行词。定语从句一般放在先行词的后面。
02
定语从句的关系词
引导定语从句的关系词有关系代词和关系副词。
常见的关系代词包括that， which， who(宾格whom，所有格whose)，as 等。
关系副词包括where， when， why等。关系代词和关系副词放在先行词及定语从句之间起连接作用，同时又作定语从句的重要成分。
03
定语从句的分类
根据定语从句与先行词的关系，定语从句可分为限制性定语从句及非限制性定语从句。
1. 限制性定语从句紧跟先行词，主句与从句不用逗号分开，从句不可省去。例如：
Any man that / who has a sense of duty won’t do such a thing.
任何有责任感的人都不会做这样的事。
2. 非限制性定语从句主句与从句之间有逗号分开，起补充说明作用，如省去，意思仍完整。例如：
The house,which we bought last month,is very nice.
这幢房子很漂亮,是我们上个月买的.
注意：非限定性定语从句中不能使用关系代词 that。
04
关系代词的用法
1. that
that既可以用于指人，也可以用于指物。在定语从句中作主语、宾语或表语，作宾语可省略。例如：
Mary likes music that is quiet and gentle.
玛丽喜欢轻柔的音乐。(that作主语)
The coat (that) I put on the desk is blue.
我放在桌子上的那件外套是蓝色的。(that作宾语)
2. which
which 用于指物，在句中作主语、宾语或表语，作宾语可省略。例如：
The building which stands near the train station is a supermarket.位于火车站附近的那座大楼是一家超市。(作主语)
The film (which) we saw last night was wonderful.
我们昨天晚上看的那部电影很好看。(作宾语)
3. who， whom
who， whom 用于指人，who 用作主语和表语，whom用作宾语。在口语中，有时可用who代替whom，也可省略。例如：
The girl who often helps me with my English is from England.
经常在英语方面帮助我的那个女孩是英国人。(who 作主语)
Who is the teacher (whom) Li Ming is talking to?
正在与李明谈话的老师是谁?(whom 作宾语)
4. as
① 引导限定性定语从句时，指与先行词相似的人或物，必须用于 such/so...as...或 the same...as...结构中，例如：
Such people as were mentioned by him were honest.
被他提到的这样的人是诚实的。
Last term our maths teacher set so difficult an examination problem as none of us worked out.
上学期我们数学老师出了一道我们没有一个人会的数学题。
This is the same bag as I lost yesterday.
这是和我昨天买的包一样的包。
② 引导非限定性定语从句时，只能修饰句子，可置于被修饰句子后面、前面或主谓之间,翻译成“正如...那样”例如：
The earth moves around the sun, as we all know.
As we all know,The earth moves around the sun.
The earth, as we all know, moves around the sun
③ 在非限制性定语从句中，which和as引导定语从句时的区别：
a. which引导的从句不能放在主句前，而as引导的从句则既可以放在主句前，也可以放在主句后，还可以放在主谓之间。
b. as和which都可以指代一个句子，但as有“正如”、“就像”之意，which则没有此含义。
c. as 引导的非限定定语从句只能修饰句子，which 引导的非限定性定语从句可以修饰句子，也可以修饰名词。
注意：
1. 当定语从句中含有介词，介词放在句末时，who，whom, that，which可省略，但介词在关系代词前时，只能用“介词+which/whom”结构。例如：
This is the house in which we lived last year.
这是我们去年居住的房子。
Please tell me from whom you borrowed the English novel.
请告诉我你从谁那借的这本英文小说。
2. 含有介词的固定动词词组中，介词不可前置，只能放在原来的位置上。例如：
This is the person whom you are looking for.
这就是你要找的那个人。
3. 关系词只能用that的情况：
① 先行词被序数词或形容词最高级所修饰，或本身是序数词、形容词最高级时，只能用that，而不用which.例如：
He was the first person that passed the exam.
他是第一个通过考试的人。
当先行词指人时，偶尔也可以用关系代词who。
② 被修饰的先行词为all， any， much， many， everything， anything， none， the one等不定代词时，只能用that，而不用which.例如：
Is there anything that you want to buy in the shop?
你在商店里有什么东西要买吗?
当先行词指人时，偶尔也可以用关系代词who。
③ 先行词被the only， the very， the same， the last， little， few 等词修饰时，只能用that，而不用which。例如：
This is the same bike that I lost.
这就是我丢的那辆自行车。
注意： 当先行词指人时，偶尔也可以用关系代词who。例如：
Wang Hua is the only person in our school who will attend the meeting.
王华是我们学校唯一将会出席这个会议的人。
④ 先行词里同时含有人或物时，只能用that.例如：
I can remember well the persons and some pictures that I saw in the room.
我能清楚记得我在那个房间所见到的人和一些照片。
⑤ 以who或which引导的特殊疑问句，为避免重复，只能用that.例如：
Who is the girl that is crying?
正在哭泣的那个女孩是谁?
⑥ 主句是there be 结构，修饰主语的定语从句用that，而不用which.例如：
There is a book on the desk that belongs to Tom.
桌子上那本书是汤姆的。
4. 关系词只能用which，而不用that 的情况：
①先行词为that， those时，用which， 而不用that.例如：
What’s that which is under the desk?
在桌子底下的那些东西是什么?
②关系代词前有介词时，用which，而不用that.例如：
This is the room in which he lives.
这是他居住的房间。
③引导非限制性定语从句，用which， 而不用that.例如：
Tom came back， which made us happy.
汤姆回来了，这使我们很高兴。
05
关系副词的用法
1. when指时间，其先行词表示时间，在句中作时间状语。例如：
This was the time when he arrived.
这是他到达的时间。(when=at which)
2. where指地点，其先行词表示地点，在句中作地点状语。例如：
This is the place where he works.
这是他工作的地点。(where=at /in which)
3. why 指原因，其先行词是原因，起原因状语作用。例如：
Nobody knows the reason why he is often late for school.
没人知道他为什么上学总迟到。(why=for which)
高一英语教你学会做英语笔记
1、注音标(Phonetics)，标重音(Stress)。
每单元的英语课文都有不少生词、一词多音和容易读错的英语单词，某些英语单词作名词和动词的发音不同，如'record(n.)和re'cord(vt.)。将英语音标和重音记在被注的单词上边，并要求学生在朗读课文时重视所注的音标和重读音节。这样，一旦课文读熟,那些单词的正确读音也就熟记在心了。
2、释义(Paraphrase)。
英语中有不少生词、多义词、短语、习惯语和难句需要用简单的英语或汉语来解释。如：quarrel争吵(to argue or disagree angrily with someone);forture财富(great wealth)。在课文学习过程中，注释的重点是一些较难的名词、短语和重点句型，而不必每个句子都解释。注释文字书写位置的原则是“就近”，即尽可能记在被解释的单词旁边，以便在阅读课文时被注视。若解释的英文单词较多，原文旁边写不下或记下去因单词太多书写太密而不清晰时，可记在相对较近的空白处，注释文字与被注文字之间可划一直线连接。也可记录在词汇表中该单词的后面。
3、划重点(Language Points)。
我指导学生用五角星标出新句型、用三角形标出旧句型、用圆圈标出介词或冠词、用方框标出新的短语和词组、用直线或水浪曲线划出英语课文中的关键句，科普文、议论文中表明作者中心论点的句子。语法和练习中的一些重点、难点也该划出来，以便引起重视。4、提要(Guideline)。
即用简洁的英文概括提示课文或段落、或句子的要点。这一工作常常与上述几项结合起来进行，先在原文上作上线条、小圆圈之类的标记，再在旁边空白处写上要提示的文字。例如，现在使用的高中英语教材每一单元阅读课文的正文前面都有“预习提示”(包括课文的重点生词和要讨论的问题)，课文的后面常要求学生作简要笔记Note Making ;这是教材编辑为方便学生预习而编写的内容。我要求学生在自学课文时，先从这些“预习提示”入手，以便把握预习的重点。然后再根据“提示”去预习正文。如高二(下)第十四单元Satellite(卫星)是一篇科普文章，学生可以根据“预习提示”和Note Making把课文分为四个段落，我指导学生在各段落旁分别写上Broadcasting satellite(广播卫星),Weather Satellite(气象卫星),Communication Satellite(通讯卫星),Space Satellite(太空卫星)。这样，“预习提示”所述的课文要点就概括、凸现出来了，课文的段落大意和中心思想也一清二楚了。
4、标疑(Question)。
英语不是我们的母语，因此，在英语学习过程中，我们常常会碰到许多问题。阅读过程中可以在有问题的地方打一个问号，再寻找机会向老师或同学求教或查阅有关参考书解疑。
5、分析难点(Comprehension)。
学生阅读英语课文，不断会遇到一些难点，经过老师的讲解，或与同学一起讨论有些可能当场已经完全理解，有的还似懂非懂。不管怎样，边听边记下析难的文字，既有利于课后消化，也有利于复习回顾。
6、补缺(Replenishment)。
英语词汇表和一些参考书中对某些单词和词组的解释不够全面，有些只讲了名词的意思，而未说明作动词、形容词等的意义。老师应该让学生自己查词典或告诉他们别的用法，并让他们记录下来。比如学习了名词success(成功),应该让他们记下形容词successful、副词successfully和动词succeed。
7、纠错(Correct Mistakes)。
关于高中英语定语从句部分的重要考点有哪些
考点分为以下几点：
定语从句的引导词，包括关系代词that，which，who，whom，whose。可以在定语从句中充当主语，宾语和表语成分，whose则充当定语。代人的有：who，whom，whose，that；代物的有：that，which，whose。另外还有关系副词，包括when(指时间)，where(指地点)，why(指原因)，在定语从句中作状语。要注意的是，选择关系副词还是关系代词要看先行词在定语从句中充当什么样的成分。
限制性定从和非限制性定从，限制性定从修饰某个名词或者名词短语或者代词，与先行词之间不用，隔开。但是非限制性定从不仅可以修饰某个名词，还可以修饰整个句子，与先行词之间常用，隔开。而且非限制性定从不能用that引导。
as引导的非限定从和which引导的区别也是考点之一，（啊，手打好累(ˇˍˇ) ）which不能放在句首，但是as既可以放在句首，也可以放在中间的。which引导的非限定从常翻译成“这。。”，as引导的则常翻译成“正如。。。”
还有就是只能用that作为关系代词的情况，这个情况挺多的，比如先行词被only，very,序数词或者形容词最高级（等等，情况较多，需要平时多积累总结）修饰时。。
另外，介词+关系代词中考查介词的选择，应该按照短语的习惯性搭配和先行词来。
比如，Who is the girl with whom you just shook_hands？(shake hands with…是习惯性搭配)
而当关系代词作为动词+介词短语的宾语时，短语不能拆开。
比如， He is a kind of man whom you can safelydepend_on.
这一模块弄明白这几点后，练题是必要的哦~手都打酸了，麻烦采纳啦！
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