（期末考点培优）专题07 句型转换-2024-2025学年八年级英语下册期末复习考点培优专项外研版（含答案解析）

中小学教育资源及组卷应用平台
中小学教育资源及组卷应用平台
2024-2025学年八年级英语下册期末复习专项外研版
（期末考点培优）专题07 句型转换
学校:___________姓名：___________班级：___________考号：___________
1．Bob has read the book. (对画线部分提问)
has Bob
2．Tom has had that camera since two years ago.（对划线部分提问）
has Tom had that camera
3．Jim has cleared out a lot of old books. (对划线部分提问)
has Jim
4．We will go back to our school in fifteen minutes. (对划线部分提问)
will you go back to your school
5．It was invented by Whitcomb Judson. （对画线部分提问）
it invented by
6．The shortest course lasts for four weeks. (对画线部分提问)
the shortest course last
7．Her mother has been to Hong Kong several times. (对画线部分提问)
her mother been to several times
8．The boy has been to the USA twice. （对画线部分提问）
has the boy been to the USA
9．He has waited for her for 2 hours. (对画线部分提问)
he waited for her
10．My parents have gone to Britain. (对画线部分提问)
parents gone
11．He is friendly and kind.(对画线部分提问)
he
12．The man with glasses over there is George’s guest. (对划线部分提问)
is the man with glasses over there
13．Peter has worked as an architect since 2019. (对划线部分提问)
has Peter worked as an architect
14．I will go to the party with Karen and Anna.（就画线部分提问）
will you go to the party
15．Farmers raise animals and grow plants for food. (划线部分提问)
do farmers raise animals and grow plants
16．Tina woke up at midnight. (对划线部分提问)
Tina
17．It often takes about 10 hours to go from Beijing to Xi’an. （对画线部分提问）
does it often to go from Beijing to Xi’an
18．We have lived in this area since we moved here in 2010.（对画线部分提问）
you in this area
19．I’ve been a teacher since I came here.（对画线部分提问）
you a teacher
20．Peter has repaired his bike.（对画线部分提问）
has peter
21．They can’t finish the work in such a short time. (保持句意基本不变)
It’s them to finish the work in such a short time.
22．He bought this pet dog two months ago. (同义句转换)
He this pet dog for two months.
23．Health is important in every family all over the world.（同义句转换）
Health in every family the world.
24．“How can I get to the nearest post office ” asked the man. (保持句意不变)
The man asked get to the nearest post office.
25．Jim takes pride in his team for winning the basketball match. (改同义句)
Jim is his team for winning the basketball match.
26．He came here last week. (同义句转换)
He here since last week.
27．Julia has a skirt. She bought it three weeks ago. (合并为一句）
Julia her skirt for three weeks.
28．I have had the bike since my eighth birthday. (改为同义句)
I have had the bike I eight years old.
29．My sister bought the ring three years ago. (改为同义句)
My sister the ring for three years.
30．I bought the bike five years ago. (同义句转换)
I the bike for five years.
31．My mother bought the bread maker two weeks ago. (改为同义句)
My mother the bread maker for two weeks.
32．The film Be My Friend started ten minutes ago. (改为同义句)
The film Be My Friend has for ten minutes.
33．It seems that he is a little excited.（改为同义句）
a little excited.
34．Annie doesn’t have money to go on vacation this summer. (改为同义句)
Annie can’t go on vacation this summer.
35．I bought the mobile phone three years ago.（改为同义句）
I the mobile phone for three years.
36．Mona went to Shanghai two days ago. (改为同义句)
Mona in Shanghai since two days ago.
37．Maybe she is angry. (改为同义句)
She angry.
38．“I haven’t finished my homework,” says Tom. (改为同义句)
Tom says .
39．The hotel provides guests with meals.(改为同义句)
The hotel provides meals guests.
40．Linda is the tallest girl in her class except Mary. (改为同义句)
Linda is girl in her class.
41．I have already been there.（改为疑问句）
you been there
42．How often do we hold the meeting I asked the chief editor.（合并成一句）
I asked the chief editor how often the meeting.
43．The manager led them personally to the reception desk. (改为一般疑问句)
the manager them personally to the reception desk
44．He has already been to some cities in south China. (改为否定句)
He been to cities in south China .
45．Could you tell me Are you interested in English (合并为一句话)
Could you tell me are interested in English
46．Ann has already bought a book as a birthday gift for me.（改为否定句）
Ann bought a book as a birthday gift for me .
47．“Are you going to find a part-time job during the holidays ” I asked Mary. (改为宾语从句)
I asked Mary she going to find a part-time job during the holidays.
48．“Will you book a room in Dragon Hotel for me ” Kitty asked John. (改为宾语从句)
Kitty asked John he book a room in Dragon Hotel for her.
49．This is the pen. He bought the pen yesterday. (将两句合为一句)
This is the pen bought yesterday.
50．When will the football match finish Peter asked me. (改为宾语从句)
Peter asked me the football match .
51．I have already been to the science museum a couple of times. (变一般疑问句)
you been to the science museum
52．I prefer music. The music is quiet and gentle. (合并成一句)
I prefer is quiet and gentle.
53．Was the machine invented by David She wasn’t sure. (合并为一句)
She wasn’t sure the machine was invented by David.
54．Try to translate every word into Chinese.(改为否定句)
Try translate every word into Chinese.
55．“The moon goes around the earth.” The teacher said.
The teacher said .
56．I want to know. Who is she (合并为一句)
I want to know .
57．She said, “I like listening to music in my free time.” (改为间接引语)
She said that listening to music in her free time.
58．The girl can hardly hear the speaker. (补全反意疑问句)
The girl can hardly hear the speaker,
59．There is some orange in the bottle. (改为否定句)
There orange in the bottle.
60．Mr Smith collected cartoon stories twenty years ago.(改为现在完成时)
Mr Smith cartoon stories for twenty years.
61．We have already started to explore other planets. (改为一般疑问句)
you to explore other planets
62．I think we should look for another hotel to live in. (改为否定句)
I we look for another hotel to live in.
63．The astronauts have travelled to the planet. (改为否定句)
The astronauts to the planet.
64．I have arrived already. (改为疑问句，并作否定回答)
65．The students have cleaned their classroom.（改为否定句）
The students their classroom.
66．Daming has climbed Mount Tai before. (改为一般疑问句，并做否定回答)
— Daming Mount Tai before
— , he .
67．He has already finished the homework. (改为否定句)
He finished the homework .
68．“Will you celebrate your 15th birthday ” Mike asked Jane. (改为间接引语)
Mike asked Jane she celebrate her 15th birthday.
69．I have already finished reading Treasure Island. (改为一般疑问句)
you finished reading Treasure Island
70．Mr Li asked his students, “Do you know how to protect the environment ”（合并成一句）
Mr Li asked his students they how to protect the environment.
71．I have already finished reading the book. (改为否定句)
I finished reading the book .
72．Li Mei has learned English for five years.（改为否定句）
Li Mei English for five years.
73．She’s owned it since her fifth birthday. (改为否定句)
She it since her fifth birthday.
74．Tony asked me, “What does your sister usually do on holiday ” (改为宾语从句)
Tony asked me my sister usually on holiday.
75．Is it polite to speak loudly at the table Could you tell us (合并为含宾语从句的复合句）
Could you tell us it’s to speak loudly at the table
76．He has already introduced many classics to his classmates. (改为否定句)
He introduced many classics to his classmates .
77．Gina has already read Harry Potter. (改为否定句)
Gina read Harry Potter .
78．“Do you want another try ” Ben’s teacher asked him. (改成宾语从句)
Ben’s teacher asked him he another try.
79．They have already done their homework at school. (变成否定句)
They done their homework at school .
80．Ben’s already put up his tent by the river. (否定句)
Ben put up his tent by the river .
中小学教育资源及组卷应用平台
中小学教育资源及组卷应用平台
21世纪教育网(www.21cnjy.com)
21世纪教育网(www.21cnjy.com)
参考答案及试题解析
1．What done
【解析】句意：鲍勃已经读过这本书了。此处询问“鲍勃做了什么”，what“什么”，引导特殊疑问句，句首首字母大写，do“做”，用过去分词形式，构成现在完成时。故填What；done。
2．How long
【解析】句意：汤姆从两年前就开始用那台照相机了。划线部分“since two years ago.”表示时间段，对其提问，应用how long。故填How；long。
3．What done
【解析】句意：Jim已经清理了很多旧书。根据“has cleared”可知，本句时态为现在完成时，对划线部分“cleared out a lot of old books”可知，需疑问词what来提问，需动词do的过去分词done“做”，放句末。故填What；done。
4．How soon
【解析】句意：我们十五分钟后回学校。题干划线部分“in fifteen minutes”为将来的一段时间，对其提问应用疑问词how soon“多快；多久以后”，句首首字母大写。故填How soon。
5．Who was
【解析】句意：它是由Whitcomb Judson发明的。此处对Whitcomb Judson提问，是对人提问，用疑问词who，此句为一般过去时的被动语态，所以who后面仍用was。故填Who was。
6．How long does
【解析】句意：最短的课程持续四周。就划线部分提问，即最短的课程持续多久？对时间段提问用特殊疑问词how long，后接一般疑问句，时态是一般现在时，主语是三单，借助助动词does，后接动词原形，故填How long does。
7．Where has
【解析】句意：她的妈妈去过香港几次。根据划线部分“Hong Kong”可知要对地点提问，故用疑问词Where。句子是现在完成时态，变为疑问句要将has提到前面。故填Where；has。
8．How many times
【解析】句意：这个男孩去过美国两次。划线部分是次数，疑问词用how many times。故填How；many；times。
9．How long has
【解析】句意：他已经等了她两个小时了。划线部分表示一段时间，对此提问用疑问词how long“多久”，助动词has放在主语he前，故填How；long；has。
10．Where have your
【解析】句意：我父母去了英国。根据划线部分“Britain”可知要对地点提问，可用疑问词where。句子是现在完成时态，改为疑问句要将have提到句前。另外，句中的“My”要换成第二人称的your。故填Where；have；your。
11．What is like
【解析】句意：他很友好很善良。画线部分friendly and kind表示人物的品性，因而使用句型“what be+sb. like”，主语是he，be动词用is。故填What；is；like。
12．Whose guest
【解析】句意：那边戴眼镜的那个人是乔治的客人。根据划线部分可知，此处应询问是谁的客人，因此用特殊疑问词whose“谁的”位于句首，后接名词guest“客人”。故填Whose；guest。
13．How long
【解析】句意：自2019年以来，彼得一直担任建筑师。划线部分表示时长，用how long进行提问，故填How；long。
14．Who with
【解析】句意：我会和Karen和Anna一起去派对。划线部分Karen and Anna表示人，应用who来提问，位于句首，首字母要大写，go to the party后接介词with。故填Who；with。
15．What for
【解析】句意：农民饲养动物和种植植物以获取食物。划线部分是名词，作介词for的宾语，对此提问用疑问词what，最后一个空填for，故填What；for。
16．When did wake up
【解析】句意：蒂娜半夜醒来了。划线部分是时间状语，疑问句用when来提问，句首首字母w需要大写。原句是一般过去时态，疑问句的助动词是did，后跟动词原形。故填When；did；wake；up。
17．How long take
【解析】句意：从北京到西安通常需要大约10个小时。对一段时间提问用how long；疑问句中谓语动词用原形。故填How；long；take。
18．How long have lived
【解析】句意：自2010年搬来这里以来，我们一直住在这个地区。画线部分since we moved here in 2010表示时长，应用how long来提问，位于句首，首字母要大写。句子应用现在完成时，其谓语结构为：have/has+过去分词，主语为you，助动词应用have，后接过去分词lived。故填How；long；have；lived。
19．How long have been
【解析】句意：自从我来到这里，我就一直当老师。划线部分表示时段，用how long提问，原句含助动词have，疑问句将have提到主语前。故填How；long；have；been。
20．What done
【解析】句意：Peter已经修理了他的自行车。根据“Peter has repaired his bike.”可知，句子是现在完成时，划线部分repaired his bike“修理自行车”是主语Peter所做的事情，疑问句由what来提问，可用what have/has sb. done “某人做了什么？”，所以第二空是done。故填What；done。
21．impossible for
【解析】句意：他们不可能在这么短的时间内完成这项工作。改为同义句，此处为it的固定句型“It’s… for sb. to do sth.”表示“对某人来说做某事是……的”，原句强调“对他们来说不可能完成”，应用形容词impossible表示“不可能的”。故填impossible；for。
22．has had
【解析】句意：他两个月前买了这只宠物狗。根据“He...this pet dog for two months.”可知，此处需要表达“他拥有这只宠物狗两个月了”。句中“for two months”是一段时间，常与现在完成时连用，且谓语动词要用延续性动词。“buy”是短暂性动词，不能与一段时间连用，此处应用延续性动词“have”，现在完成时的结构是“have/has+过去分词”，主语“He”是第三人称单数，所以用“has had”。故填has；had。
23．matters around/across
【解析】句意：健康对全世界的每个家庭都很重要。此句也可以表达为“对于全世界的每一个家庭来说，健康很要紧”；matter“要紧”，时态为一般现在时，主语为“health”，用第三人称单数形式即matters；再根据“all over the world”可知，其同义表达为around/across the world。故填matters；around/across。
24．how he could
【解析】句意：“我怎么去最近的邮局？”那人问。根据上下句话对照，可知此处是将含有直接引语的句子改写为宾语从句，第一空为宾从的连接词how；第二空，宾语从句的语序为陈述句语序，此处需填主语，直接引语转为间接引语时，人称代词I需转为he；第三空，宾语从句的时态遵循主过从过的原则，因此情态动词can需改写为过去式could。故填how；he；could。
25．proud of
【解析】句意：吉姆为他的球队赢得篮球比赛而感到自豪。短语take pride in=be proud of“为……感到骄傲”，本句为一般现在时。故填proud；of。
26．has been
【解析】句意：他上周来到这里。此句可以转换为“自上周以来他一直在这里”。根据时间状语“since last week”，需要使用现在完成时态，主语“He”为第三人称单数，结构为“has+过去分词”，be here“在这里”。故填has been。
27．has had
【解析】句意：Julia有一件短裙。她三周前买的。合并为一句时，句子可以转换为：Julia已经买了这件短裙三个星期了。根据“for three weeks”可知，表一段时间，故转换后的句子时态为是现在完成时，所以不能再用短暂性动词buy，应用延续性动词have。主语是第三人称单数Julia，助动词用has，have的过去分词是had。故填has had。
28．since was
【解析】句意：我八岁生日时就有了这辆自行车。“since+过去一个时间点”，“since+从句”是since的两种用法，故可替换为“since+从句”；在since引导的时间状语从句中，主句为现在完成时，从句通常使用一般过去时，且主语为I，故be动词用was。故填since；was。
29．has had
【解析】句意：我的妹妹三年前买了这枚戒指。根据“three years ago”可知，动作早已经发生，可以用现在完成时，其结构为has/have+done。由新改句中的“for three years”可知，谓语动词要用延续性动词。have可以表示“有”，而且此动作可以延续。主语为第三人称单数形式，助动词用has，动词have的过去分词为had。故填has had。
30．have had
【解析】句意：我五年前买了这辆自行车。根据“for five years”可知，此句是现在完成时，和一段时间连用，谓语动词需要用延续性动词，buy是短暂性动词，对应的延续性动词为have“有”。主语是I，助动词用have。故填have had。
31．has had
【解析】句意：我妈妈两周前买了面包机。根据“for two weeks”可知，该句为现在完成时，主语my mother（我妈妈）是第三人称单数，助动词用has，bought为短暂性动词，变成完成时，要变为延续性动词have（拥有），其过去式为had。故填has had。
32．been on
【解析】句意：电影《Be My Friend》十分钟前就开始了。根据句中“for fifteen minutes”和空前“has”可知，此处为现在完成时，start为非延续性动词，不能和时间段连用，需要变为be on，be的过去分词为been。故填been；on。
33．He seems
【解析】句意：他似乎有点兴奋。原句是It seems that...句型，结合空数可知，这里主语可以用he，seem作谓语动词，句子是一般现在时，主语是第三人称单数，动词用三单形式。故填He；seems。
34．afford to
【解析】句意：安妮今年夏天没有钱去度假。根据“doesn’t have money”可知，表示“没有钱”，也就是“负担不起”，因此可换为can’t afford to do sth.，故填afford；to。
35．have had
【解析】句意：三年前我买了这部手机。此处表示我拥有这部手机已经三年。have“拥有”，根据“for three years”可知，此处用现在完成时have/has done，主语是I，谓语用have done，故填have；had。
36．has been
【解析】句意：莫娜两天前去了上海。根据“since two days ago”可知，句子时态是现在完成时，谓语动词构成是have/has done，主语是Mona，助动词用has，be动词用过去分词形式been。故填has；been。
37．may be
【解析】句意：她可能生气了。根据Maybe可知，意为“可能”，此处可以用may be代替。故填may；be。
38．he hasn’t finished his homework
【解析】句意：汤姆说：“我还没有完成我的作业。”原句是直接引语，可变为间接引语。句子主语变为Tom，那么从句中的代词也相应换成第三人称的he和his，另外动词也要变为三单形式hasn’t。故填he hasn’t finished his homework。
39．for
【解析】句意：酒店为客人提供膳食。此句是一般现在时态的陈述句，改为同义句，前后句时态要保持一致，provide sb with sth =provide sth for sb给某人提供某物。故填for。
40．the second tallest
【解析】句意：Linda是除了Mary之外她们班最高的女孩。此句可表达为“Linda是她们班第二高的女孩”；the second tallest“第二高的”，作定语修饰名词girl。故填the second tallest。
41．
Have yet
【解析】句意：我已经去过那儿了。观察原句是现在完成时have done，变一般疑问句则把have提前放句首，already变为yet。故填Have；yet。
42．we held
【解析】句意：我们多久开一次会？我问主编。原句的“How often do we hold the meeting ”是直接疑问句，合并后需改为间接引语（宾语从句），用陈述语序，主句动词“asked”是过去时，因此从句的时态也要用过去时。故填we；held。
43．Did lead
【解析】句意：经理亲自领他们到接待处。原句时态为一般过去时，改为一般疑问句需要借助助动词did，后跟动词原形lead“带领”。故填Did；lead。
44．hasn’t any yet
【解析】句意：他已经去过中国南方的一些城市。改为否定句，助动词has改为hasn’t，some“一些”在否定句中要改为any；already“已经”在否定句中要改为yet，位于句尾。故填hasn’t；any；yet。
45．if you /whether you
【解析】句意：你能告诉我吗？你对英语感兴趣吗？根据句子可知，此句是一般疑问句，变成宾语从句时应用if/whether引导，语序为陈述句语序。故填if you/whether you。
46．hasn’t yet
【解析】句意：安已经买了一本书作为生日礼物给我了。原句是现在完成时，改为否定句，直接在助动词has后加上not即可；already要改为yet。故填hasn’t；yet。
47．if was
【解析】句意：我问玛丽：“你打算在假期找份兼职吗？”。根据题意可知，此处要求改为宾语从句，因此用if引导宾语从句，意为“是否”，从句中主语是she，此处用一般过去时，因此be动词用was。故填if；was。
48．if/whether would
【解析】句意：“你能帮我在龙宾馆订个房间吗？”基蒂问约翰。根据“Will you book a room in Dragon Hotel for me ”可知，从句要用if或whether引导，问是否能做某事；宾语从句用陈述语序，再由“asked”可知，主句为一般过去时，从句使用过去的某种时态，he后用情态动词will的过去式would。故填if/whether；would。
49．which/that he
【解析】句意：这是钢笔。他昨天买了这支钢笔。此处合为一句应用定语从句，先行词是pen，指物，且关系词在从句中作宾语，应用which或that引导；根据“He bought the pen”可知从句主语为he。故填which/that；he。
50．when would finish
【解析】句意：足球赛什么时候结束？皮特问我。原句改为宾语从句，疑问词用when引导从句，主句“Peter asked me”为一般过去时，从句也应用过去的某种时态，因此will需改为would，后跟动词原形finish。故填when；would finish。
51．Have yet
【解析】句意：我已经去过科学博物馆好几次了。 原句“I have already been to...”的时态是现在完成时，改为一般疑问句时，have要提前至句首，already改为yet。 故填Have；yet。
52．music that
【解析】句意：我更喜欢音乐。音乐安静而柔和。分析句子可知，此处要求合并成一句话，可以表达为“我更喜欢轻柔的音乐”，因此此处用that引导的定语从句，music意为“音乐”，作先行词。故填music；that。
53．if/whether
【解析】句意：这台机器是大卫发明的吗？她不确定。原句“Was the machine invented by David ”为一般疑问句，改成宾语从句之后，引导词用if/whether。故填if/whether。
54．not to
【解析】句意：试着不要把每个单词翻译成中文。try to do sth.尝试做某事，其否定结构是try not to do sth.尝试不要做某事，故填not ；to。
55．that the moon goes around the earth
【解析】句意：“月亮绕地球转。”老师说。原句叙述的是客观事实，应用that引导宾语从句，从句时态不变。故填that the moon goes around the earth。
56．who she is
【解析】句意：我想知道她是谁？这里是要改为含有宾语从句的复合句，主句是一般现在时，从句时态不受限制，从句是特殊疑问句，特殊疑问词who作为引导词，后加陈述语序，故填who；she；is。
57．she liked
【解析】句意：她说：“我喜欢在空闲时间听音乐。”本题将原来的直接引语改为间接引语，即将原来的陈述句改为that引导的宾语从句，主语I变成she，宾语从句的时态与主句一致，应用一般过去时，动词要用过去式，like的过去式为liked。故填she liked。
58．can she
【解析】句意：这个女孩几乎听不见演讲者的声音。hardly是表示否定的词，改反意疑问句时，附加问句用肯定形式；主语为“The girl”，所以附加问句应用she来代替。故填can she。
59．isn’t any
【解析】句意：瓶子里有一些橙汁。原句是there be句型，变否定句应在be动词后加否定词not，由“is”可知，否定用is not，缩写为isn’t；而原句中的some“一些”常用于肯定句中，在否定句和疑问句中应改为any。故填isn’t；any。
60．has collected
【解析】句意：史密斯先生收集卡通故事二十年了。现在完成时的结构：主语+have/has +动词的过去分词。Mr Smith主语是单数第三人称，所以是助动词has，动词collect的过去分词是collected。故填has；collected。
61．Have started yet
【解析】句意：我们已经开始探索其他行星了。一般疑问句将助动词have提到句首，第二空填过去分词started。already用于肯定句，问句改为yet，将其放在句末，故填Have；started；yet。
62．don’t think should
【解析】句意：我认为我们应该另外找一间宾馆入住。其否定句句意为：我认为我们不应该再另外找一间宾馆入住，这里是宾语从句，其否定形式要否定前移，否定词位于think前，主语I是第一人称，修饰实义动词think，故用助动词don’t，其后的动词用动词原形。故填don’t；think；should 。
63．haven’t travelled
【解析】句意：宇航员们已经去过这个星球了。根据“have travelled”可知是现在完成时态，变否定句时，在助动词have后加not，缩写为haven’t，过去分词travelled不变。故填haven’t；travelled。
64．Have you arrived yet No, I haven’t.
【解析】句意：我已经到达。根据谓语have arrived是现在完成时，变为一般疑问句，把助动词have提前，位于句首，将already改为yet，其否定回答为No, I haven’t。故填Have you arrived yet ；No, I haven’t.
65．haven’t cleaned
【解析】句意：学生们已经打扫了他们的教室。谓语have cleaned是现在完成时，故变为否定句，把助动词have改为haven’t。故填haven’t；cleaned。
66．Has climbed No hasn’t
【解析】句意：大明以前爬过泰山。题目要求改为一般疑问句，并做否定回答。分析句子可知，原句中有助动词has，改为一般疑问句需提到句首并大写首字母，其后动词不变；否定回答用No，其后使用助动词+not形式构成。故填Has；climbed；No；hasn’t。
67．hasn’t yet
【解析】句意：他已经完成了作业。原句是现在完成时，has done的否定是hasn’t done；already表示“已经”，在否定句或疑问句通常把already改为yet，并将其放于句尾。故填hasn’t；yet。
68．if/whether would
【解析】句意：“你会庆祝你的15岁生日吗？”迈克问简。根据题目要求可知，本题应改为间接引语，直接引语是一般疑问句，间接引语应用if或whether转述，表示“是否”；直接引语是一般将来时态，根据“Mike asked Jane”可知，变为间接引语要用过去将来时态，will的过去式是would。故填if/whether；would。
69．Have yet
【解析】句意：我已经读完《金银岛》了。分析句子可知是现在完成时，改成一般疑问句将助动词置于句首，主语是you，助动词用have；already表示“已经”，用于疑问句句末改成yet。故填Have；yet。
70．if knew
【解析】句意：李先生问他的学生：“你知道如何保护环境吗？”根据语境可知，时态为一般过去时，结合当直接引语为“一般疑问句”时，可以变为由if引导的宾语从句。直接引语是一般现在时态，从句用一般过去时态。故填if；knew。
71．haven’t yet
【解析】句意：我已经读完书了。根据“have already finished”可知是现在完成时，根据题干要求是改成否定句，现在完成时的句子变为否定句时在助动词have后面加not，have not＝haven’t，already在否定句中要变成yet，且位于句尾。故填have’t；yet。
72．hasn’t learned
【解析】句意：李梅学英语已经五年了。根据题意是变成否定句，时态为现在完成时，结构是have/has done的形式，变成否定句在have/has的后面加not，后加动词的过去分词。故填hasn’t；learned。
73．has not owned/hasn’t owned
【解析】句意：她五岁生日时就拥有它了。根据原句可知，时态为现在完成时，She’s是She has的缩写。现在完成时的否定句是在助动词have/has后加not构成，缩写为haven’t/hasn’t，谓语动词仍使用过去分词形式；原句的助动词是has，所以否定句用has not/hasn’t。故填has not/hasn’t owned。
74．what did
【解析】句意：托尼问我：“你妹妹假期通常做什么？”该句可以改为what引导的宾语从句，从句应是陈述句语序，主句时态是一般过去时，此时从句也用过去的时态，do改为did，故填what；did。
75．if polite
【解析】句意：吃饭时大声说话是礼貌的吗？你能告诉我们吗？第一句为一般疑问句，改成宾语从句的复合句时，需用if“是否”来引导，其后为陈述语序。 is为系动词，填形容词polite“礼貌的”作表语。故填if；polite。
76．hasn’t yet
【解析】句意：他已经给同学们介绍了许多经典作品。观察句子可知，该句时态为现在完成时（has done），改为否定句要用hasn’t。already副词“已经”，一般用于肯定句中，否定句应该用yet，故填hasn’t；yet。
77．hasn’t yet
【解析】句意：吉娜已经读过《哈利波特》了。原句是现在完成时，变否定句时，需将助动词has后加not，缩写为hasn’t；already用于肯定句中，否定句中应用yet，放在句末。故填hasn’t；yet。
78．if/whether wanted
【解析】句意：“你想再试一次吗？”本的老师问他。原句为一般疑问句，改为宾语从句时要用引导词if/whether“是否”；由主句中的“asked”可知，主句为一般过去时态，宾语从句的时态也要用过去时态，因此谓语动词应用过去式wanted。故填if/whether；wanted。
79．haven’t yet
【解析】句意：他们已经在学校做了作业。原句为现在完成时，其否定句通常在助动词has/have后面加not来完成。副词already常转换为yet。故填haven’t；yet。
80．hasn’t yet
【解析】句意：Ben已经在河边搭起了帐篷。此句为现在完成时的句子，变为否定句需在助动词“has”后加“not”，缩写为“hasn’t”，填入第一空；否定句中“already”需变为“yet”，因此第二空填“yet”。故填hasn’t；yet。
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