单元提升卷 09 Unit 3 The Internet
(
单元基础知识巩固
)
重点单词变形
1 ．convenient adj.方便的；近便的→ n ．方便→ n ．不便
2 ．benefit n ．益处 vt.使受益 vi.得益于→ adj.有益的
3 ．distance n ．距离→ adj.遥远的；疏远的→ adv.疏远地
4 ． inspire vt. 鼓 舞 ； 激 励 ； 启 发 思 考 → adj. 鼓 舞 人 心 的 ； 使 人 振 奋 的 →
adj.受启发的；受鼓舞的→ n ．灵感；启发
5 ．access n ．通道；(使用、查阅、接近或面见的)机会 vt.进入；使用；获取→ adj.可以
进入的；可以使用的
6 ．privacy n ．隐私；私密→ adj.私人的；秘密的→ adv.私下地
7 ．theft n ．偷(窃)；盗窃罪→ n ．小偷
8 ．rude adj.粗鲁的；无礼的→ adv.粗鲁地→ n ．粗鲁，粗暴
9 ．false adj.假的；错误的→ n ．错误；瑕疵
10 ．embarrassing adj.让人难堪(尴尬；害羞)的→ adj.感到难堪(尴尬)的→ n ．尴尬
重点词组
1 ．keep pany
2 ．now that
3 ．go through
4 ．in shape
5 ．keep track of
6 ．make fun of
7 ．keep (...) in mind
一、用单词的适当形式完成句子
1 ．It was a very effective way for them to keep track their spending.
2 ．The software enables you (access) the Internet in seconds.
3 ．You can help to increase a community’s access safe drinking water.
4 ．The small factories benefit the fall of the prices.
5 ．Children receive red envelopes filled with money and (inspire) messages from elders.
6 ．MyHomework Student Planner is an (update) app to replace a former version.
7 ．To make ends meet, he worked as a photographer and (blog).
8 ．She was angry at Steve's (rude), but I could forgive it.
9 ．Internet makes our life easy and (convenience).
10 ．Don’t make fun those who are different from you.
11 ．The two journalists followed at a proper (distant).
12 ．We all found the new machines (function) well as expected.
13 ．I object to our (private) being invaded.
14 ．In the past few years, effective measures (take) to protect the endangered animals.
15 ．So far it (confirm) that the conference will take place next week.
16 ．I am familiar the computer and I also attach importance to diligence and devotion. 17 ．Many intelligent search engines (design) for teenagers to aid them in study so far.
18 ．He (pressure) the button to call the lift just now.
19 ．She had come to value her (private) and independence.
20 ．The questions she asked sometimes were quite (embarrass).
21 ．We must make an effort (go) through the difficult times.
22 ．All roads were blocked and the only (accessible) to the earthquake-stricken areas was by water.
23 ．The memory of his father inspired him (write) his greatest poetry.
24 ．But no evidence of life (discover) in any of these planet so far.
25 ．Your trousers require (press).
26 ．Life isn’t meant to be easy. You have to go some pain to learn the skills and move forward.
27 ．My most (embarrass)moment was trying to introduce a woman whose name I couldn’t remember.
28 ．Students learned the practical (apply) of the theory they had learned in the classroom.
29 ．Even the smallest baby can (identity) its mother by her voice.
30 ．Greatly (inspire) by the teacher’s words, I have made up my mind not to give up my goal.
二、根据汉语意思填写单词
31 ．You can write anything that you are (熟悉的) with and send them to us.
32 ．I’ll need regular (最新消息) on your progress in the project.
33 ．The game has already been (推迟) three times because of bad weather.
34 ．Press the (按钮) to sound the alarm in case of fire.
35 ．He stopped fighting with the firm for his own (利益).
36 ．Nowadays data and identity (偷窃） becomes more and more common.
37 ．Let them know you are there to help in any way and respect the (隐私） of your neighbor.
38 ．Don’t forget to take a few spare (电池) when travelling.
39 ．I opened a bank (账户) after I made $ 1,000 by doing a part-time job during the summer vacation.
40 ．His words gave us the (错误的) impression that he would lend us money, but he would not.
三、完成句子
41 ．垃圾分类非常重要。
to sort rubbish.
42 ．运动会是否能按时举行取决于天气。
Whether the sports meeting will take place completely the weather.
43 ．你以及你的搭档正面临巨大的挑战。
You your partner in face of a big challenge.
44 ．既然你不同意这个计划，我只好把它修改一下。
you don't agree to the plan, I will have to make changes to it.
45 ．你们将会轮流在整个班级面前演讲。
You will a speech in front of the class.
(
高考能力提升
)
四、用单词的适当形式完成短文
In the near future, we will be living in smart homes, which will ensure our 46 (secure), save us energy and
provide a more comfortable environment to live in.
In the smart homes, 47 (use) advanced technology daily for automatic control of everything will be common. Our future home will use integrated sensors to tell when we leave home and then go into an energy efficient mode all by 48 (it). We don’t have to think about turning 49 (switch) on and off ourselves. Our future home will prepare everything for us when we get home every evening. It is also amazing that all
controls will respond 50 voice commands.
Smart homes can help monitor our health. They will give us suggestions on a healthier diet and how 51 (sleep) better. They can also warn us early on if we have a critical illness and 52 (potential) save our lives. In addition, they can help to prevent serious damage from accidents. For instance, if a water pipe 53 (start)
leaking, our smart home will detect it.
This smart technology isn’t 54 daydream or fantasy any longer. Many new innovations have become a
reality. Nevertheless, it will take a few years 55 most new homes start to use this new technology.单元提升卷 09 Unit 3 The Internet
(
单元基础知识巩固
)
重点单词变形
1 ．convenient adj.方便的；近便的→convenience n ．方便→inconvenience n ．不便
2 ．benefit n ．益处 vt.使受益 vi.得益于→beneficial adj.有益的
3 ．distance n ．距离→distant adj.遥远的；疏远的→distantly adv.疏远地
4 ．inspire vt.鼓舞；激励；启发思考→inspiring adj.鼓舞人心的；使人振奋的→inspired adj.受启发的；受鼓
舞的→inspiration n ．灵感；启发
5 ．access n ．通道；(使用、查阅、接近或面见的)机会 vt.进入；使用；获取→accessible adj.可以进入的；
可以使用的
6 ．privacy n ．隐私；私密→private adj.私人的；秘密的→privately adv.私下地
7 ．theft n ．偷(窃)；盗窃罪→thief n ．小偷
8 ．rude adj.粗鲁的；无礼的→rudely adv.粗鲁地→rudeness n ．粗鲁，粗暴
9 ．false adj.假的；错误的→fault n ．错误；瑕疵
10 ．embarrassing adj.让人难堪(尴尬；害羞)的→embarrassed adj.感到难堪(尴尬)的→embarrassment n ．尴尬
重点词组
1 ．keep pany 陪伴某人
2 ．now that 既然；由于
3 ．go through 经历；度过；仔细检查
4 ．in shape 状况良好
5 ．keep track of 掌握…… 的最新消息；了解…… 的动态
6 ．make fun of 取笑；戏弄
7 ．keep (...) in mind 牢记
一、用单词的适当形式完成句子
1 ．It was a very effective way for them to keep track their spending.
2 ．The software enables you (access) the Internet in seconds.
3 ．You can help to increase a community’s access safe drinking water.
4 ．The small factories benefit the fall of the prices.
5 ．Children receive red envelopes filled with money and (inspire) messages from elders.
6 ．MyHomework Student Planner is an (update) app to replace a former version.
7 ．To make ends meet, he worked as a photographer and (blog).
8 ．She was angry at Steve's (rude), but I could forgive it.
9 ．Internet makes our life easy and (convenience).
10 ．Don’t make fun those who are different from you.
11 ．The two journalists followed at a proper (distant).
12 ．We all found the new machines (function) well as expected.
13 ．I object to our (private) being invaded.
14 ．In the past few years, effective measures (take) to protect the endangered animals.
15 ．So far it (confirm) that the conference will take place next week.
16 ．I am familiar the computer and I also attach importance to diligence and devotion. 17 ．Many intelligent search engines (design) for teenagers to aid them in study so far.
18 ．He (pressure) the button to call the lift just now.
19 ．She had come to value her (private) and independence.
20 ．The questions she asked sometimes were quite (embarrass).
21 ．We must make an effort (go) through the difficult times.
22 ．All roads were blocked and the only (accessible) to the earthquake-stricken areas was by water.
23 ．The memory of his father inspired him (write) his greatest poetry.
24 ．But no evidence of life (discover) in any of these planet so far.
25 ．Your trousers require (press).
26 ．Life isn’t meant to be easy. You have to go some pain to learn the skills and move forward.
27 ．My most (embarrass)moment was trying to introduce a woman whose name I couldn’t remember.
28 ．Students learned the practical (apply) of the theory they had learned in the classroom.
29 ．Even the smallest baby can (identity) its mother by her voice.
30 ．Greatly (inspire) by the teacher’s words, I have made up my mind not to give up my goal.
二、根据汉语意思填写单词
31 ．You can write anything that you are (熟悉的) with and send them to us.
32 ．I’ll need regular (最新消息) on your progress in the project.
33 ．The game has already been (推迟) three times because of bad weather.
34 ．Press the (按钮) to sound the alarm in case of fire.
35 ．He stopped fighting with the firm for his own (利益).
36 ．Nowadays data and identity (偷窃） becomes more and more common.
37 ．Let them know you are there to help in any way and respect the (隐私） of your neighbor.
38 ．Don’t forget to take a few spare (电池) when travelling.
39 ．I opened a bank (账户) after I made $ 1,000 by doing a part-time job during the summer vacation.
40 ．His words gave us the (错误的) impression that he would lend us money, but he would not.
三、完成句子
41 ．垃圾分类非常重要。
to sort rubbish.
42 ．运动会是否能按时举行取决于天气。
Whether the sports meeting will take place completely the weather.
43 ．你以及你的搭档正面临巨大的挑战。
You your partner in face of a big challenge.
44 ．既然你不同意这个计划，我只好把它修改一下。
you don't agree to the plan, I will have to make changes to it.
45 ．你们将会轮流在整个班级面前演讲。
You will a speech in front of the class.
参考答案：
1 ．of
【详解】考查固定搭配。句意：对他们来说， 这是一种非常有效的跟踪支出的方法。固定搭配 keep track of
(记录、掌握…… 的最新消息)。故填 of。
2 ．to access
【详解】考查非谓语动词。句意：这个软件使你在几秒钟内就能上网。根据句中谓语动词“enables”可知， 空处应为非谓语动词；动词短语 enable sb to do sth 表示“使某人能够做某事” ，符合句意，故应用动词不定
式，作宾补。故填 to access。
3 ．to
【详解】考查介词。句意：你可以帮助增加社区获得安全饮用水的机会。 access to 固定搭配，意为“使
用…… 的机会” ，故填 to。
4 ．from
【详解】考查介词。句意：小工厂从价格下跌中获益。 benefit from 是固定短语，意为“从…… 中获益” ，因
此空格处是 from，故填 from。
5 ．inspiring
【详解】考查形容词。句意： 孩子们会收到装满钱的红包，以及来自长辈的鼓舞人心的信息。此处应用
修饰物的-ing 形容词 inspiring 作定语，修饰名词 messages，表示“鼓舞人心的” ，故填 inspiring。
6 ．updated
【详解】考查形容词。句意： MyHomework Student Planner 是一个更新的应用程序，取代了以前的版本。
空格处用形容词作定语，修饰名词 app ，update 的形容词是 updated，意为“更新的” ，故填 updated。
7 ．blogger
【详解】考查名词。句意：为了维持生计，他做过摄影师和博客写手。此处应用名词 blogger 作宾语，表
示“写博客的人” ，由 a 可知，应用单数，故填 blogger。
8 ．rudeness
【详解】考查名词。句意：她对 Steve 的粗鲁很生气，但我可以原谅。空前 Steve’s 为名词所有格，空处应
为名词 rudeness，作介词 at 的宾语，且 rudeness 为不可数名词，故填 rudeness。
9 ．convenient
【详解】考查形容词。句意：互联网使我们的生活简单方便。由 and 连接的 easy 为形容词可知，此处也应
为形容词形式，和 easy 共同构成形容词短语，作句子的宾补成分。故填 convenient。
10 ．of
【详解】考查介词。句意：不要取笑那些与你不同的人。分析句子结构， make fun of 为固定句型，含义为
“取笑 ……”，符合句意，故填 of。
11 ．distance
【详解】考查名词。句意：两名记者保持适当的距离跟踪。分析句子，设空处使用 distant 的名词 distance
作宾语，意为“距离” 。故填 distance。
12 ．functioning/function
【详解】考查非谓语动词。句意：我们都发现新机器（正在）运转正常。 find sb./sth. doing 固定搭配，意 为“发现某人/某物正在做某事” ，find sb./sth. do 意为“发现某人/某物做了某事” ，此处既可以表示发现机器 正在运转很好， 应用现在分词 functioning 作宾语补足语， 也可以表示机器运转的很正常， 应用 function 作
宾语补足语，故填 functioning/function。
13 ．privacy
【详解】考查名词。句意：我反对我们的隐私受到侵犯。分析句子可知， 这里应填名词， 和空格后的 being invaded 构成动名词复合结构，作宾语， private 的名词形式是 privacy，意义为“ 隐私” ，为不可数名词。故
填 privacy。
14 ．have been taken
【详解】考查动词时态语态。句意：在过去的几年里，已经采取了有效的措施来保护濒危动物。根据时间 状语“In the past few years”可知， 此处使用现在完成时， 主语 effective measures 和 take 为被动关系， 需用被
动语态，主语为复数名词，助动词用 have。故填 have been taken。
15 ．has been confirmed
【详解】考查被动语态。句意：到目前为止，已经确认会议将于下周举行。分析句子结构，空白处在句子 中作谓语， 与主语之间为被动关系， 使用被动语态。根据时间状语 So far 可判断出空白处应填现在完成时
的被动语态，故填 has been confirmed。
16 ．with
【详解】考查固定搭配。句意：我熟悉电脑， 并且我也很重视勤奋和奉献精神。分析句子结构和意思可知，
这里考查固定搭配 be familiar with，意为“熟悉” 。故填 with。
17 ．have been designed
【详解】考查时态语态和主谓一致。句意：到目前为止，许多智能搜索引擎都是为青少年设计的，以帮助 他们学习。空处为句子谓语动词，根据时间状语 so far 判断为现在完成时，主语 intelligent search engines 与 design 之间是被动关系，因此用现在完成时的被动语态，主语是复数，助动词用 have。故填 have been
designed。
18 ．pressed
【详解】考查动词时态。句意：他刚才按下按钮叫电梯。此处作谓语动词，应用动词 press，由 just now可
知，应用一般过去时。故填 pressed。
19 ．privacy
【详解】考查名词。句意：她开始重视自己的隐私和独立。分析句子结构可知， 此处应为名词作宾语， private
的名词为 privacy 且为不可数名词。故填 privacy。
20 ．embarrassing
【详解】考查形容词。句意：她有时问的问题很令人尴尬。空格处用形容词作表语，主语 questions 是物，
用修饰物的 ing 结尾的形容词 embarrassing，意为“令人尴尬的” 。故填 embarrassing。
21 ．to go
【详解】考查动词不定式。句意：我们必须努力度过困难时期。分析句子结构可知， 句中已有谓语动词“must
make”，故空处需填非谓语动词， make an effort to do sth 表示“努力做某事”符合句意。故填 to go。
22 ．access
【详解】考查名词。句意：所有道路都被封锁，通往地震灾区的唯一通道是水路。空处用于定冠词 the 之
后，应用名词 access ，表示“通路” ，在 and 后的句子中作主语，符合题意。故填 access。
23 ．to write
【详解】考查不定式。句意：对他父亲的记忆激励着他写下他最伟大的诗歌。短语 inspire sb to do sth，意
为“鼓励某人去做某事” ，不定式作宾补，故填 to write。
24 ．has been discovered
【详解】考查动词的时态。句意：但是到目前为止，在这些行星上都没有发现生命迹象。根据句意及句子
结构可知，空处要填入谓语； evidence 与 discover 之间是动宾关系，根据状语so far 可知，空处要用现在 完成时的被动语态 have/has been done；主语为 no evidence，不可数名词，故助动词用 has。故填 has been
discovered。
25 ．pressing/to be pressed
【详解】考查非谓语动词。句意：你的裤子需要熨烫。句中主语为 trousers 为物， sth require doing 意为“某 物需要被做” 为固定短语，其与 require to be done 为同义短语。press 为动词，意为“熨烫”。故填 pressing；
to be pressed。
26 ．through
【详解】考查介词搭配。句意：人生不意味着简单。你必须经历一些痛苦，去学习一些技能，然后前进。 根据“learn the skills and move forward”可知学习技能需要经历痛苦，用词组 go through 表示“通过、经历”。
故填 through。
27 ．embarrassing
【详解】考查形容词。句意：我最尴尬的时刻是想介绍一个我记不起名字的女人。此空作名词 moment 的
定语，应使用 ing 结尾的形容词。故填 embarrassing。
28 ．application
【详解】考查名词。句意：学生们学会了课堂上学到的理论的实际应用。 practical 为形容词，作定语修饰
名词，结合句意“应用”可知，应填名词 application，此处表抽象概念，不可数。故填 application。
29 ．identify
【详解】考查动词。句意：即使是最小的小宝宝也能通过声音辨别出母亲。空前有情态动词 can ，故空处
需要填提示词 identity 的动词原形； identify 表示“辨认出” ，符合句意。故填 identify。
30 ．inspired
【详解】考查非谓语动词。句意：深受老师的话的鼓舞，我决定不放弃自己的目标。 I 与 inspire 之间是逻
辑上的动宾关系，表示被动，用过去分词作状语，故填 inspired。
31 ．familiar
【详解】考查形容词。句意：你可以写任何你熟悉的东西并发送给我们。 sb. be familiar with sth.(某人熟悉
某物)，形容词 familiar 作表语。故填 familiar。
32 ．updates
【详解】考查名词。句意：我要定期了解你项目的最新进展。根据“on your progress”可知， “最新消息”应 用名词 update，作 need 的宾语， 且空前有 regular“定期的”，update 应用复数形式， 表示定期了解你的最新
进展。故填 updates。
33 ．postponed
【详解】考查动词。句意：由于天气不好，比赛已经被推迟了三次。根据汉语提示可知，空处应用动词postpone， 表示“推迟”，与主语 the game 之间是被动关系， 所以空处应用动词的过去分词形式 postponed，与空前的 has
been 构成现在完成时的被动语态。故填 postponed。
34 ．button
【详解】考查名词。句意：遇到火灾时，按下这个按钮就会发出警报。根据汉语提示可知，此处为名词
button“按钮”作宾语，满足句意要求。故填 button。
35 ．benefit
【详解】考查名词。句意：他为了自己的利益停止了与公司的斗争。根据句意和汉语提示应填 benefit“利
益” ，作宾语，此处用作不可数名词，故填 benefit。
36 ．theft
【详解】考查名词。句意：数据和身份盗窃变得越来越普遍。根据汉语提示， “偷窃”和空后的 becomes 可
知，应用名词 theft 作主语，此处表示抽象概念，不可数。故填 theft。
37 ．privacy
【详解】考查名词。句意：让他们知道你会以任何方式提供帮助，并尊重邻居的隐私。根据句意和汉语提
示应填名词 privacy“隐私”作宾语，不可数名词，故填 privacy。
38 ．batteries
【详解】考查名词。句意：旅行时别忘了带几节备用电池。根据汉语提示“ 电池”可知，用名词 battery，根
据 a few 修饰可知，用可数名词的复数形式。故填 batteries。
39 ．account
【详解】考查名词。句意：暑假打工赚了 1000 美元后，我开了一个银行账户。 bank account 银行账户。根
据不定冠词 a 可知，用可数名词的单数形式。根据汉语提示及句意，故填 account。
40 ．false
【详解】考查形容词。句意：他的话给了我们错误的印象是他会借钱给我们，但他不会。根据中文提示可 知， “错误的”可译为 false。分析句子可知，形容词修饰名词，空格处用形容词修饰名词 impression。故填
false。
41 ． It is highly important
【详解】考查固定句型。分析汉语可知，此处应为不定式作真正主语， it 作形式主语的结构，其中真正的 主语为 to sort rubbish，表示“非常重要”应为 highly important，结合句意可知，此处描述的是现在的情况，
所以应使用一般现在时态， it 位于句首，首字母需大写。故填①It②is③highly④important。
42 ． depends on
【详解】考查动词短语。分析句子结构可知， 此处应为主句的谓语动词， 表示“取决于”为 depend on，描述
的为现在的情况，所以从句中谓语动词使用一般现在时态，从句作主语，谓语动词需用单数。故填
①depends②on。
43 ． together with are
【详解】考查固定短语、 一般现在时和主谓一致。该句在描述目前的状况，句子用一般现在时； “你以及 你的搭档”翻译为 you together with your partner，固定短语 together with“和， 连同”连接两个主语， 谓语动词
遵循临远原则，与 you 保持一致，谓语动词 be 应用其复数形式 are 。故填 together with are。
44 ． Now that
【详解】考查复合连词。表示“ 既然”可用 now that，引导原因状语从句。句首字母大写，故空 1 填 Now；
空 2 填 that。
45 ． take turns to make
【详解】考查时态。 take turns to do sth.轮流做某事； make a speech 演讲。 will 后接动词原形构成一般将来
时。根据句意，故填 take turns to; make。
(
高考能力提升
)
四、用单词的适当形式完成短文
In the near future, we will be living in smart homes, which will ensure our 46 (secure), save us energy and
provide a more comfortable environment to live in.
In the smart homes, 47 (use) advanced technology daily for automatic control of everything will be common. Our future home will use integrated sensors to tell when we leave home and then go into an energy efficient mode all by 48 (it). We don’t have to think about turning 49 (switch) on and off ourselves. Our future home will prepare everything for us when we get home every evening. It is also amazing that all
controls will respond 50 voice commands.
Smart homes can help monitor our health. They will give us suggestions on a healthier diet and how 51 (sleep) better. They can also warn us early on if we have a critical illness and 52 (potential) save our lives. In addition, they can help to prevent serious damage from accidents. For instance, if a water pipe 53 (start)
leaking, our smart home will detect it.
This smart technology isn’t 54 daydream or fantasy any longer. Many new innovations have become a
reality. Nevertheless, it will take a few years 55 most new homes start to use this new technology.
46 ．security 47 ．using 48 ．itself 49 ．switches 50 ．to 51 ．to sleep 52 ．potentially
53 ．starts 54 ．a 55 ．before
【导语】这是一篇说明文。不久的将来将实现家居智能化， 这将从安全保障、节能等方面提高我们的生活
质量。
46 ．考查名词。句意：在不久的将来，我们将生活在智能家居中，这将确保我们的安全，节约能源，并提 供更舒适的居住环境。分析句子， 设空处需填入名词作动词 ensure 的宾语， secure 的名词 security 意为“安
全” ，为不可数名词。故填 security。
47 ．考查非谓语动词。句意：在智能家居中， 每天使用先进的技术对一切事物进行自动控制将是很常见的。
句中 will be 为谓语动词，设空处使用动名词作主语。故填 using。
48 ．考查代词。句意：我们未来的家将使用集成传感器来告诉我们什么时候离开家，然后自动进入节能模 式。分析句子，句中构成 by oneself 的固定结构，以为“通过某人自己” 。此处表示通过机器本身，故使用
反身代词 itself。故填 itself。
49 ．考查名词。句意：我们会发现我们的晚餐已经准备好了，不用自己打开或关闭开关。分析句子可知， 设空处需填入名词作 turning 的宾语，名词 switch 是可数名词，设空处前无表示单数的限定词，且结合句
意应用复数形式。故填 switches。
50 ．考查介词。句意：同样令人惊讶的是，所有的控制都将响应语音命令。句中 response to 为固定短语，
意为“ 回复” 。故填 to。
51 ．考查非谓语动词。句意：他们会给我们关于健康饮食和如何睡得更好的建议。设空处构成特殊疑问词
+to do 的结构，整体作宾语。故填to sleep。
52 ．考查副词。句意：如果我们患有危重疾病，它们还可以在早期警告我们，并可能挽救我们的生命。分
析句子可知，设空处修饰动词 save ，应用副词形式。故填 potentially。
53 ．考查时态。句意：例如，如果水管开始泄漏，我们的智能家居将会检测到它。主句为一般将来时，从
句时态为一般现在时，从句主语为 a water pipe，第三人称单数。故填 starts。
54 ．考查冠词。句意：这种智能技术不再是白日梦或幻想。句中的 daydream or fantasy 为泛指，因而用不
定冠词。 daydream 开头单词为辅音音素。故填 a。
55 ．考查连词。句意：然而，还需要几年的时间大多数新住宅才能开始使用这项新技术。分析句子结构可
知，设空处引导状语从句，句型 It will be/was +一段时间+before+从句表示“ 多久之后才/就” 。故填 before。
