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2026-2027学年外研版九年级英语上册核心语法精讲精练
（新教材）Unit 3 Past passing by
核心语法：目的状语从句
一、核心概念
目的状语从句在复合句中表示主句动作发生的目的，即“为什么要做这件事”。它由从属连词引导，回答“为什么这样做？”或“为了什么？”。
核心功能： 用一个句子来说明动作发生的“目的”。
核心含义： “以便……”、“为了……”
核心结构： 主句 + so that / in order that + 从句
示例：
I got up early so that I could catch the first bus.（我早起以便能赶上第一班公交车。）
He spoke loudly so that everyone could hear him.（他大声说话以便大家都能听见。）
二、目的状语从句的引导词
引导词 含义 用法 示例
so that 以便，为了 最常用，可接情态动词（can/could/may/might） I got up early so that I could catch the bus.
in order that 以便，为了 更正式，常接情态动词 She studied hard in order that she might pass the exam.
in order to 为了 接动词原形（不定式），不是从句 She studied hard in order to pass the exam.
to 为了 接动词原形（不定式），最简洁 She studied hard to pass the exam.
三、so that 引导的目的状语从句（核心重点）
1. 基本结构
主句 + so that + 主语 + 情态动词 + 动词原形
I got up early so that I could catch the first bus.（我早起以便能赶上第一班公交车。）
She spoke loudly so that everyone could hear her.（她大声说话以便大家都能听见。）
He bought a map so that he could find the way.（他买了一张地图以便找到路。）
2. 从句中常用的情态动词
情态动词 用法 例句
can / could 能够 I got up early so that I could catch the bus.
may / might 可以，可能 She studies hard so that she may get good grades.
will / would 将，会 I’ll call you so that you will know the news.
3. 时态呼应
主句是一般现在时，从句用 can / may / will
I study hard so that I can pass the exam.
主句是一般过去时，从句用 could / might / would
I studied hard so that I could pass the exam.
时态对应表：
主句时态 从句情态动词 示例
现在时 can / may / will I study hard so that I can pass.
过去时 could / might / would I studied hard so that I could pass.
将来时 can / will I will study hard so that I can pass.
四、in order that 引导的目的状语从句
in order that 与 so that 意义相同，但更正式，常用于书面语。
She studied hard in order that she might pass the exam.（她努力学习以便能通过考试。）→ 更正式
He left early in order that he could catch the train.（他早早离开以便能赶上火车。）→ 更正式
注意： so that 和 in order that 后面接的是完整的句子（主语 + 谓语）。
五、不定式表目的（to / in order to）
目的状语从句可以简化为不定式短语，使句子更简洁。
1. to + 动词原形（最常用）
I got up early to catch the first bus.（我早起去赶第一班公交车。）
She went to the library to borrow some books.（她去图书馆借书。）
2. in order to + 动词原形（更正式）
She studied hard in order to pass the exam.（她努力学习为了通过考试。）
He left early in order to catch the train.（他早早离开为了赶上火车。）
3. so as to + 动词原形（较正式）
She studied hard so as to pass the exam.（她努力学习以便通过考试。）
He left early so as not to be late.（他早早离开以免迟到。）
注意： so as to 通常不放在句首，而 in order to 可以放在句首。
In order to catch the train, he left early.
So as to catch the train, he left early.（一般不这么用）
六、目的状语从句 vs 结果状语从句（核心辨析！）
目的状语从句和结果状语从句都常用 so that 引导，但含义不同。
对比项 目的状语从句 结果状语从句
含义 “为了……”、“以便……” “因此……”、“以至于……”
是否带有意图 有明确的目的/意图 是客观结果，无意图
情态动词 常有 can/could/may/might 无（或根据实际情况）
逗号 通常不用逗号 前面常有逗号
示例 I got up early so that I could catch the bus.（有意图） I got up late, so that I missed the bus.（无意图，客观结果）
对比例句：
目的： He spoke loudly so that everyone could hear him.（他大声说话以便大家都能听见。）→ 有意图，用 could
结果： He spoke loudly, so that everyone heard him.（他大声说话，以至于大家都听见了。）→ 客观结果，无 could
判断技巧：
看是否可用 in order to 替换 → 能替换的是目的状语从句
看从句中是否有 情态动词（can/could/may/might）→ 有一般是目的状语从句
看前面是否有逗号 → 有一般是结果状语从句
七、不定式表目的与目的状语从句的转换
从句结构 不定式结构 示例
so that + 主语 + can + 动词原形 to + 动词原形 I study hard so that I can pass the exam. → I study hard to pass the exam.
so that + 主语 + could + 动词原形 to + 动词原形 I studied hard so that I could pass the exam. → I studied hard to pass the exam.
in order that + 主语 + may + 动词原形 in order to + 动词原形 She studies hard in order that she may succeed. → She studies hard in order to succeed.
转换规则：
当主句和从句的主语一致时，可以简化为不定式。
如果主语不一致，不能简化，必须用完整的从句。
八、易错点与难点突破
1. so that 引导目的状语从句时忘记情态动词
I got up early so that I catch the bus.
I got up early so that I could catch the bus.
2. so that 目的与结果的混淆
He worked hard so that he failed.（逻辑错误）
He worked hard so that he could succeed.（目的）
He worked hard, so that he succeeded.（结果）
3. in order to 与 so as to 的位置错误
So as to catch the train, he left early.
In order to catch the train, he left early.
He left early so as to catch the train.
4. 不定式表目的与不定式作宾语混淆
作目的状语： I went home to get my book.（去家的目的是拿书）
作宾语： I want to go home.（want 的宾语）
九、思维导图总结
十、记忆口诀
目的状语从句口诀：
目的状语表目的，so that / in order that；
从句常有情态动词，can/could/may/might。
不定式表目的更简洁，to / in order to / so as to；
so that 目的和结果，有无情态和逗号。
1．—Look! The shared bikes are everywhere.
—Let's put them in a right place __________ they can be used again.
A．so that B．even though C．as soon as
2．Mr Green speaks very loudly ___________ all the people can hear him clearly.
A．when B．so that C．because D．if
3． I have to leave now ____I can catch the early bus.
A．so that B．because of C．until D．as soon as
4．—What a mess! The sharing bikes are thrown everywhere!
—Let's collect and put them in the right place _________ they can be used conveniently!
A．so that B．such that C．too to D．very that
5．We must hurry up ________catch up with the last train.
A．that B．so that C．in order that D．in order to
6．She dressed up ____everyone might notice her.
A．because B．in order to C．in order that
7．I got up early this morning __________ I could catch the early bus.
A．because B．so that C．as soon as D．although
8．I give you a map _________ you won't get lost.
A．because B．until C．so that D．if
9． They trained ____ harder than before ____ they could win the match.
A．too ; to B．so ; that
C．such ; that D．/ ; so that
10． Peter spoke so ____th at I could not catch him.
A．loudly B．carefully C．quickly
11． Parents often encourage their children ____ children can make great progress.
A．as soon as B．so that C．if D．unless
12．They went to the playground and practiced running they could win the race.
A．until B．so that C．as soon as D．unless
13．He wrote books____they could learn about how he treated the sick.
A．because B．as soon as C．until D．so that
14．Jim got up early _______ he could catch the early bus to go to work.
A．when B．so that C．that D．then
15．We have to leave now____we can catch the last bus.
A．so that B．as soon as C．because D．if
16．To encourage people to come to the city, Zibo set up a special "barbecue (烧烤) map" and added 21 new barbecue bus lines ________ people can "get on the bus to rest, get off to eat".
A．even though B．so that C．since
17．Sandy moved back to her hometown ________ she could visit her grandparents more often.
A．so that B．now that C．as if D．even if
18．The work was hard it took us quite a long time to do it.
A．such; that B．so; that C．too; that D．too; to
19． Now more and more people take exercise every day____ they can have healthier bodies.
A．such that B．in order to C．so that D．even though
20．Mr Jones prefers to stay at the hospital ____ he can care for his mother.
A．before B．as soon as C．even if D．so that
21． She went to England last year in order that she could learn standard English.
A．in order to B．so as to C．so that D．as a result
22．Everybody studies really hard ________ they can get good grades in the exams.
A．because B．but C．so that
23．I got up very early I got to the station on time.
A．to the result B．in order to C．so that D．because
24．Tony usually takes notes carefully in class ________ he won't forget the main points.
A．so that B．although C．because
25．We must get up early ______ we can catch the first bus to school.
A．so that B．because of C．in order to D．in order
26．The robber wore a sock over his face ________ he wouldn't be recognized by the security cameras.
A．although B．so that C．because D．unless
27．Spend more time __________ English ____ you can get a good grade in the final exam.
A．learning; so that B．learn; so that C．learning; because
28．She gets up early every day ________ she can get to work on time.
A．because B．if C．so that D．as soon as
29． He ran fast ____ he could catch the bus.
A．so that B．because C．because of D．that
30．We should study hard we can get much knowledge.
A．when B．so that C．unless D．in order to
31．We have two ears and one mouth so that we can listen ____ we speak.
A．as twice much as B．twice as much as C．as much as twice
32． The movie Nezha is ____educational ____ I want to see it again.
A．so; that B．such; that C．too; to D．as; to
33．—Mom, I took my partner's math book home by mistake. What should I do
—Well, you should call her ________ you can say sorry to her.
A．as if B．so that C．even if D．ever since
34．The giant is very selfish. He builds a high wall ________ that children can't play in his garden.
A．and B．but C．or D．so
35．Our teacher asks us to read English newspapers every day ____ we can improve our English.
A．now that B．so that C．as long as D．even though
36．—I heard Hefei Central Library has been open to the public recently.
—Yes, it has plenty of desks and chairs ________ it's quite convenient for reading.
A．as if B．so that C．as long as D．as soon as
37．You'd better take the map with you ________ you won't get lost.
A．so that B．as soon as C．now that D．as long as
38．一Mom, I took my partner's math book home by mistake. What should I do
一Well, you should call her you can say sorry to her.
A．as if B．so that C．even though D．ever since
39． Judy wrote a letter to her parents ____they could understand her feelings clearly.
A．so that B．although C．if D．until
40． He plans to have a good rest ____ he'll have enough energy to continue his work.
A．as soon as B．in order to C．so that D．now that
41．She worked hard everything would be ready in time.
A．such that B．so that C．so what D．such what
42． We help our mother with housework ____ she can have a rest during the holiday.
A．so that B．after C．until D．that
43．The performers practiced for months, ________ they could perform perfectly.
A．so that B．because C．although
44． Why not say sorry to her____ you can be friends again
A．unless B．until C．so that
45．He reads the newspaper loudly all the family could hear.
A．when B．since C．so that D．because
46． Xu Dawei wants to pass the Civilian Mobile Library on to his son ____ it can stay open forever.
A．before B．although C．so that
47．A:What would some students like to do after finishing their education
B:They would like to start to work ______ they needn't depend on their parents.
A．as soon as B．although C．if D．so that
48．—I think I am the shyest in my class. What should I do
—Be more active in class ________ you can improve your ability to express yourself.
A．or B．so that C．unless D．although
49．Mrs. Li always speaks at the top of her voice________ the students at the back can hear her.
A．so that B．ever since C．as soon as D．as long as
50．I'm going to take him to some famous cities ________________ he can learn more about China.
A．because B．when C．so that D．as if
参考答案及试题解析
1．A
【解析】句意：——看！共享单车到处都是。——让我们把它们放在正确的地方，以便它们可以再次使用。so that目的是；even though即使；as soon as一……就。分析句子可知，Let's put them in a right place的目的是they can be used again，用so that引导目的状语从句。故选A。
【点评】考查连词辨析，首先理解连词词义，然后根据前后句句意确定连词。
2．B
【解析】句意：格林先生讲话声音很大，以便所有人都能听得清。A： when当……时； B： so that以便； C： because因为D： if如果。根据前后句的意思和从句中的情态动词can，可知后句所有人都能听得清是讲话声音很大的目的，要用so that引导的目的状语从句。故选B。
【点评】考查连词辨析。理解连词的词义和用法，根据前后句的意思和语法结构，选择正确的连词。
3．A
【解析】句意：我现在得走了，这样我才能赶上早班车。so that以便，结果；because of因为，介词短语，后接名词或代词及动名词；until直到；as soon as一……就……。根据前后句的句意，可知后句是前句的目的，用so that引导的目的状语从句，故选A。
【点评】考查连词辨析。理解连词的词义和用法。根据前后句的句意，确定前后句的关系，选出正确的连词。
4．A
【解析】句意：——真是一团糟！共享单车被扔得到处都是！——让我们把它们收集起来并放在合适的地方，这样它们就能被方便地使用了！so that以便，为了；such that到这样的程度；too to，通常too与to并不是直接连接；very that无此搭配。根据"Let's collect and put them in the right place...they can be used conveniently!"可知，把共享单车收集起来并放在该放的地方，就是为了方便人们使用，空处应是so that，引导目的状语从句。故选A。
【点评】考查短语辨析，首先理解短语区别，然后根据前后句句意确定短语。
5．D
【解析】句意：为了赶上最后一趟火车，我们必须快点。in order to do sth为了做某事。其他跟从句，故选D。
【点评】考查目的状语的短语与从句的辨别。
6．C
【解析】句意：她打扮得漂漂亮亮以便每个人都会注意到她。because因为，引导的原因状语从句；in order to 为了，后接动词原形，表示目的；in order that，为了，后接目的状语从句。根据前后句意，可知前后句是目的关系，用in order that，故选C。
【点评】考查固定句型的用法。根据句子结构，选出正确的连词。
7．B
【解析】句意：我今天早上起得很早，以便能赶上早班车。because因为；so that以便于；as soon as一…就…；although尽管。根据"I got up early this morning…I could catch the early bus."可知，起床早的目的是为了赶上早班车。故选B。
【点评】考查so that引导的目的状语从句，理解句意。
8．C
【解析】A项because引导原因状语从句，译为“因为”，B项until引导时间状语从句，译为“直到…”，C项so that引导目的状语从句，译为“以便于”，D项if引导条件状语从句，译为“如果”。句意：我给你一张地图，以便于你不会迷路。由句意可知，C项正确。
【点评】本题重点考查引导状语从句的连词的区别。解题的切入点是根据句意和连词的含义。
9．B
【解析】句意：他们比以前训练的更加刻苦目的是为了他们能赢得这场比赛。too ; to太...而不能...（表过度导致否定结果）；so ; that如此...以至于...（表程度结果或者目的）；such ; that这样的...以至于...（接名词短语表结果）；so that以便/为了（表目的或结果）。"they could win the match"是"trained harder"目的。故选B。
【点评】考查目的状语从句。本题通过设置易混淆的关联词选项，精准考查了学生对"so...that..."表结果状语从句这一核心语法结构的掌握，以及区分"so+副词"与"such+名词"搭配的能力。
10．C
【解析】句意： 彼得说得太快了，我没听清。A：大声；B：小心地；C：很快。根据 I could not catch him.我没听清 ，可知是说得很快。故选C。
【点评】考查副词。注意熟记副词quickly"迅速地/快速地"。
11．B
【解析】句意：父母经常鼓励他们的孩子，这样孩子才能取得很大的进步。根据题干children can make great progress可知，这里表示的是目的，家长鼓励孩子是为了孩子能取得进步。A.as soon as一......就......，B.so that以便，C.if如果，D.unless除非。so that引导目的状语从句。故选B。
【点评】考查连词。注意辨析连词，抓住关键词并结合句意选出最合适的一项。
12．B
【解析】句意：他们去操场上练习跑步以便于他们能赢得比赛。so that：以便于，引导目的状语从句，until：直到，as soon as: 一······就，引导时间状语从句，unless：除非，引导条件状语从句，故选B。
【点评】考查连接词。根据语境选出恰当的连词，确保句子通顺、完整。
13．D
【解析】句意：他写书，以便他们可以了解他是如何对待病人的。A：because因为；B：as soon as一……就……；C：until直到……；D：so that因此，以便。根据前后句的意思，可知写书的目的是让他们可以了解他是如何对待病人，用so that引导的目的状语从句，故选D。
【点评】考查连词辨析。掌握连词的词义和用法，根据前后句的关系，选出正确的连词。
14．B
【解析】句意：吉姆起床很早为了他能够赶上去上班的早班车。so that 为了；以便于，后接目的状语从句。故选B。
【点评】考查目的状语从句。
15．A
【解析】句意：我们马上得走了以便我们能赶上最后一班公共汽车。A：so that因此，以便；B：as soon as一……就……；C：because因为；D：if如果。根据前句We have to leave now的目的是 we can catch the last bus ，可知用so that引导的目的状语从句，故选A。
【点评】考查连词辨析。根据前后句的关系，选择正确的答案。
16．B
17．A
18．B
【解析】句意：这项工作是这样难以至于我们花了很长时间来做它。so+形容词/副词+that从句，都表示……是如此……以至于……”,根据 it took us quite a long time to do it.可知此处是完成了工作，故选B。
【点评】考查短语辨析。
19．C
【解析】句意：现在越来越多的人锻炼以便他们能有更健康的身体。A.such that，如此……以至于，一般用"such+名词+that从句"形式，强调结果，而非目的；B.in order to，为了，后接动词原形，不接从句；C.so that，为了、以便，引导目的状语从句；D.even though，尽管，引导让步状语从句；根据句意可知此句是结果状语从句，排除选项ABD，故选C。
【点评】考查so that引导结果状语从句。识记such……that、in order to、so that、even though的用法。
20．D
【解析】句意：琼斯先生更喜欢待在医院里，这样他就能照顾他的母亲。A.before在……之前；B.as soon as一……就；C.even if即使；D.so that以便，为了。根据语境"he can care for his mother"可知，待在医院的目的是照顾母亲，so that引导目的状语从句，符合语境。故选D。
【点评】考查目的状语从句。注意识记每个短语的含义，结合语境选出正确的连词。
21．C
【解析】句意：她去年去了英国，为了学习标准英语。A为了，其后是不定式，B以便，其后是不定式，C为了，引导原因状语从句，D结果，划线部分是in order that，以便，故与选项C是同义词，故选C。
【点评】考查词义辨析，注意识记in order that和so that是同义词。
22．C
【解析】句意：每个人都努力学习，以便在考试中取得好成绩。because因为；but但是；so that以便。根据"they can get good grades in the exams."可知，此处表目的，应为so that引导的目的状语从句。故选C。
【点评】考查连词辨析。 解题关键是理清前后句的关系：先明确 "because"（原因）、"but"（转折）、"so that"（目的）的核心用法，再结合 "努力学习" 与 "取得好成绩" 的 "手段 - 目的" 逻辑，排除不符合关系的连词。
23．C
【解析】句意：为了按时到达车站，我很早就起床了。A 结果，引导结果状语从句；B 目的是，其后跟动词原形； so that，以便于，引导目的状语从句；because，引导原因状语从句。根据题干中的I got to the station on time.提示可知此句是目的状语从句，要用so that来引导，故选C。
【点评】考查so that的基本用法。注意so that与in order to都表示目的，前者引导句子，后者引导短语。
24．A
25．A
【解析】句意：我们必须早起，以便赶上第一班去学校的公共汽车。A： so that +从句，为了，结果，引导的目的/结果状语从句； B：because of+词/短语，不能接句子，因为，表示原因；C. in order to+动词原形，为了，表示目的状语 ；D. in order 整齐的，有序的。根据空格后we can catch the first bus to school.可知是个从句，要用so that引导的目的状语从句，故选A。
【点评】考查从属连词so that引导的目的状语从句。根据句意语法结构，选择正确选项。
26．B
27．A
【解析】句意：花更多的时间学习英语，这样你就能在期末考试中取得好成绩。第一个空，固定搭配，spend...doing sth，花费.......做某事；第二空，so that，如此……以至于……，引导目的状语从句，because，因为，引导原因，这里表示结果，因此用so that，故选A。
【点评】考查固定搭配和so that引导目的状语从句。熟悉并掌握固定搭配和so that引导目的状语从句，结合题意，给出答案。
28．C
29．A
【解析】句意：他跑得很快，为了他能赶上公交车。A为了，用于引导目的状语从句；B连词，用于引导原因状语从句，说明某一事实或现象的原因；C介词短语，用于表示某事的原因；D连词，用于引导宾语从句、定语从句或状语从句。根据 he could catch the bus，可知这一行为的目的，他为了赶上公交车，故选A。
【点评】考查短语辨析，注意理解短语单词词义和语法规则，理解句意。
30．B
【解析】句意：我们应该努力学习，以便于我们可以得到更多的知识。A 当--时候 B 以便于/以至于 C 除非 D 为了 前面的表达意思（我们应该努力学习），后面的意思（我们可以得到更多的知识），根据常理可知，应该用表示目的的连词连接，故答案为B。
【点评】本题考查目的状语从句，so that引导目的状语从句，表示以便于。
31．B
【解析】句意：我们有两只耳朵和一张嘴，以便我们可以听的数量是说的两倍。根据语句We have two ears and one mouth so that we can listen……we speak.和选项，我们可以知道这里要表达的是"听的是讲的两倍那样多"。在英语中，表达倍数关系的常见结构是"倍数+as+副词/形容词原级+as"，即twice as much as，故答案为B。
【点评】考查英语中表达倍数关系的语法结构。
32．A
【解析】句意：《哪吒》 这部电影是如此的有教育意义以至于我想再看一遍。A：so; that，如此……以至于……，so后修饰形容词或副词，句型是"so+形容词或副词+that从句"。B：such; that，如此……以至于……，such后修饰名词， 句型是"such+(a/an)+形容词+名词+that从句"。C：too; to，太……以至于不能……，too后跟形容词或副词，to后面跟动词原形。D：as; to，表述错误。根据 I want to see it again可知，这是一个句子，所以前面要用that，排除选项C和选项D。且educational为形容词，所以前面用so，故选A。
【点评】考查结果状语从句。注意短语的区别，结合空处的前后，选择合适的句式。
33．B
34．D
【解析】句意：巨人很自私，他建了一堵高墙以便孩子们不能在他的花园里玩。and和，表示并列；but但是，表示转折；or或者，表示选择；so所以或以便，表示目的或结果。根据句意，建墙的目的是防止孩子们玩，因此用固定结构so that表示目的。故选D。
【点评】考查连词辨析。注意so that引导目的状语从句的用法。
35．B
【解析】句意：我们的老师要求我们每天阅读英文报纸，以便提高我们的英语水平。A.由于，既然，引导原因状语从句。B.以便于，引导目的状语从句。C.只要，引导条件状语从句。D.即使，引导让步状语从句。根据原句asks us to read English newspapers every day的目的是we can improve our English，可知此处是目的状语从句连词。故选B。
【点评】考查目的状语从句。理清选项连词意思，引导什么从句，结合原句句意选出正确的连词。
36．B
37．A
【解析】句意：你最好带着地图，这样你就不会迷路了。A so that，以便于； B as soon as，一……就……； C now that，既然； D as long as，只要。 根据句意可知，带地图的目的是不迷路，故选A。
【点评】考查固定搭配。注意固定搭配 so that 引导目的状语从句。
38．B
39．A
【解析】句意：Judy给她的父母写了一封信目的是他们能清楚地理解她的感受。A.目的是；B.尽管；C.如果；D.直到......才。Judy wrote a letter to her parents可知Judy给她的父母写了一封信，they could understand her feelings clearly他们能清楚地理解她的感受，结合选项可知讲的是Judy给她的父母写了一封信目的是他们能清楚地理解她的感受，后句表示目的，所以用so that，故选A。
【点评】考查连词辨析，首先理解连词词义，然后根据前后句句意确定正确答案。
40．C
【解析】句意：他计划好好休息一下，以便有足够的精力继续工作。A一……就，引导时间状语从句，B为了，后加动词原形，C以便于，引导目的状语从句，D既然，引导原因状语从句，根据He plans to have a good rest...he'll have enough energy to continue his work.可知有足够的精力继续工作是他好好休息的目的，故选C。
【点评】考查从属连词。注意理解各选项的正确含义，结合上下文语境选择正确的答案。
41．B
【解析】句意：她努力工作，以便按时把一切都准备就绪。so that在这里表示目的，根据句意，故选B。
【点评】考查目的状语从句。
42．A
【解析】句意：我们帮助妈妈做家务，这样她就可以在假期里休息一下。so that以便，为了，表示目的；after在……之后，表示时间；until直到，表示时间；that引导名词性从句或结果状语从句。更好 We help our mother with housework（ 我们帮助妈妈做家务 ）是she can have a rest during the holiday. （ 她可以在假期里休息一下。 ）的目的，因此用so that表示目的，故选A。
【点评】考查so that引导的目的状语从句。理解句意并掌握so that的意义和用法。
43．A
44．C
【解析】句意：为什么不跟她说声对不起，这样你就可以再一次和她做朋友了？unless除非，引导条件状语从句；until直到，可引导时间状语从句；so that以便，引导目的状语从句。根据"Why not say sorry to her ...you can be friends again "可知，空处表目的，故选C。
【点评】考查连词辨析。注意掌握so that引导目的状语从句。
45．C
【解析】句意：他大声地读报纸，为了让家里的所有人听得到。A.当……时候；B.自从；C.为了，便于；D.因为。从两句话的意思来看，这是一个结果状语从句，能够构成结果状语从句的是so that，故答案是C。
【点评】考查连词辨析，注意构成结果状语从句应使用so that。
46．C
【解析】句意：徐大伟想把民间流动图书馆传给儿子，为了让它永远开放下去。before在……之前；although虽然，尽管；so that，以便；为了。根据Xu Dawei wants to pass the Civilian Mobile Library on to his son （徐大伟想把民间流动图书馆传给儿子）和 it can stay open forever.（让它永远开放下去。）可知这是表示目的，so that，符合题意，故答案为C。
【点评】考查目的状语从句。理解句意并掌握固定搭配so that的意义和用法。
47．D
【解析】句意：-学生完成学业后会做什么？他们为了不必依赖父母想开始工作，这样as soon as 一……就；although尽管；if如果；so that以便，以致。所以选D。
48．B
49．A
50．C
【解析】句意：我要带他去一些著名的城市，这样他就可以更多地了解中国。because因为；when当……时候；so that以便，为了；as if好像；根据句子结构可知 he can learn more about China. 是 take him to some famous cities的目的，so that符合题意，故答案为C。
【点评】考查目的状语从句。识记固定搭配so that的意义和用法。
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