特殊句式
专题八 分层训练·知能双升
高
考
回
顾
考点一 倒装句
1．This is not my story, nor ________ it the whole story. My story plays out differently.
解析：句意：这不是我的故事，也不是一个完整的故事，我的故事是不一样的。nor置于句首时，句子需用部分倒装。根据时态暗示，本句为一般现在时。
答案：is
2．Never before ________ he seen anybody who can play tennis as well as Robert.
解析：句意：他从未见过有人打网球打得像Robert一样好。never before为否定副词短语，置于句首时，主句需用部分倒装。
答案：has
3．The headmaster will not permit the change in the course, nor ________ he even give it a thought.
解析：句意：校长不会允许课程变化，他甚至也不会去考虑。nor放在句首，所以句子需要部分倒装。
答案：will
4．Little ________ she care what she looks like; all she cares about is her job performance.
解析：句意：她不在乎自己的外表，她在乎的是自己的工作业绩。表否定意义的little位于句首，后面的句子要用部分倒装。
答案：does
5．Not until he retired from teaching three years ago ________ he consider having a holiday abroad.
解析：句意：直到三年前从教育行业退休以后他才考虑到国外度假。考查倒装句型。not until位于句首，主句用部分倒装。
答案：did
6．Only ________ he apologizes for his rudeness will I speak to him again.
解析：句意：只有在他为自己的无礼道歉时，我才会再理他。只有“only＋状语从句”位于句首时，主句才需用部分倒装。
答案：when/if
7．Not once ________ it occur to Michael that he could one day become a top student in his class.
解析：句意：迈克尔不止一次想过有朝一日他会成为班里的优等生。表否定的not once置于句首，后面句子的主语和谓语需采用部分倒装形式。
答案：did
8．“Never for a second，” the boy says, “________ I doubt that my father would come to my rescue.”
解析：句意：那个男孩说：“我一秒钟都没有怀疑过我父亲会来救我。”表示否定意义的词never位于句首时，后面的句子要用部分倒装，再根据would come可知，这里说的是过去的事情，故用did。
答案：did
9．Not until he went through real hardship ________ he realize the love we have for our families is important.
解析：句意：直到经历了真正的困难，他才意识到我们对家人的爱是多么重要。“Not until...”置于句首，主句需要部分倒装，故用助动词did来帮助构成部分倒装结构。
答案：did
10．________ by increasing the number of doctors by 50 percent can the patients be treated properly in this hospital.
解析：句意：只有将医生的人数增加50%，病人才能在这家医院得到恰当的治疗。“only＋状语”置于句首时，句子要部分倒装。其正常语序是：The patients can be treated properly in this hospital only by increasing the number of doctors by 50 percent.
答案：Only
考点二 强调句
1．It is not what we do once in a while ________ shapes our lives, but what we do consistently.
解析：句意：影响我们生活的不是我们偶尔做了什么，而是我们一贯做什么。考查强调句。强调not what we do once in a while。
答案：that
2．It is not how much we do but how much love we put into what we do ________ benefits our work fast.
解析：句意：能给我们工作快速带来收益的不是我们做了多少而是我们对于我们所做的事情付出了多少爱。本句被强调部分为not how much we do but how much love we put into what we do。
答案：that
3．Was it on a lonely island ________ he was saved one month after the boat went down?
解析：句意：他是不是在船沉了一个月之后在一个孤岛上被人救出来的？结合句意可知，这里是It was...that...强调句型的一般疑问句形式，被强调的是地点状语on a lonely island。
答案：that
4．It was 80 years before Christopher Columbus crossed the Atlantic ________ Zheng He had sailed to East Africa.
解析：句意：郑和早于Christopher Columbus横跨大西洋80年到达东非。考查强调句。
答案：that
5．It was with the help of the local guide ________ the mountain climber was rescued.
解析：句意：正是在当地导游的帮助下，这个登山者才被营救了。被强调部分为with the help of the local guide，将本句还原为普通句式为：With the help of the local guide，the mountain climber was rescued.判断强调句型的方法：把It is/was和that去掉后，剩余的部分仍是一个完整的句子。
答案：that
6．It was not until near the end of the letter ________ she mentioned her own plan.
解析：句意：直到在书信快结束的时候，她才提到她自己的计划。本题考查“not...until...”的强调句形式，即“It is/was not until...that...”。
答案：that
考点三 主谓一致
1．The factory used 65 percent of the raw materials, the rest of which ________(be) saved for other purposes.
解析：句意：工厂用掉了65%的原材料，其余的留作他用。考查主谓一致。which指代the raw materials，为复数，所以填be的复数形式；又由used可知用were。
答案：were
2．One－third of the country ________(be) covered with trees and the majority of the citizens are black people.
解析：句意：这个国家的三分之一被森林所覆盖，大多数的国民是黑人。“分数＋名词”作主语时，谓语动词与名词的单复数保持一致。本句所填词前的主语(country)为单数形式，由后面的分句可知时态应用一般现在时。
答案：is
3．The basketball coach, as well as his team, ________(interview) shortly after the match for their outstanding performance.
解析：句意：这位篮球教练和他的球队因为出色的表现在比赛一结束就接受了采访。本句的主语是the basketball coach，故谓语动词应用单数形式；根据语境可知时态应为一般过去时。
答案：was interviewed
4．All the scientific evidence shows that increasing use of chemicals in farming ________(be) damaging our health.
解析：句意：所有的科学证据都表明，化学制品在农业上使用得越来越多，而这正在危害我们的健康。that引导的从句为宾语从句，且从句的主语是use，为不可数名词，故谓语动词用单数形式；本句说的是客观事实，故时态应用现在时。
答案：is
5．The university estimates that living expenses for international students ________(be) around $8 450 a year, which is a burden for some of them.
解析：句意：这所大学估计留学生一年的生活费用大约是8 450美元，这对于他们中的一些人来说是个负担。宾语从句的主语是living expenses，是复数，所以谓语动词要用复数形式are。
答案：are
6．Generally, students' inner motivation with high expectations from others ________(be) essential to their development.
解析：句意：一般来说，学生们的内在动机及来自他人的高期望对他们的发展是重要的。由with连接的两个成分作主语，即A with B，谓语动词的单复数应该和A保持一致，所以本句谓语动词应该和students' inner motivation保持一致，用单数。本句说的是一般情况，所以用一般现在时态。
答案：is
考点四 其他特殊句式
1．Find ways to praise your children often, ________ you'll find they will open their hearts to you.
解析：句意：常常想办法表扬你的孩子，这样你就会发现他们会向你敞开心扉了。根据句意可知前后分句之间为顺承关系，故填and。
答案：and
2．Bring the flowers into a warm room ________ they'll soon open.
解析：句意：如果把那些花搬进一间暖房，它们很快就会开花。考查“祈使句＋and＋陈述句”句型。
答案：and
3．Before you quit your job, ________(consider) how your family would feel about your decision.
解析：句意：你在辞掉工作之前，要考虑你家人对你决定的感受。考查祈使句。
答案：consider
4．________(knock) at the door before you enter my room, please.
解析：句意：进我的房间前请先敲门。考查祈使句。注意Knock的第一个字母大写。
答案：Knock
5．Every day ________(read) a proverb aloud several times until you have it memorized.
解析：句意：每天大声朗读一条谚语，朗读几遍直到记住为止。考查祈使句。
答案：read
6．The driver wanted to park his car near the roadside but was asked by the police ________(not)．
解析：句意：这个司机想把车停在路边，但被警察告知不要这么做。考查省略。空格处补全为not to park his car the roadside。
答案：not to
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考点一 倒装句
1．My daughter would like to have her photos taken where ________ (lie) a lake.
解析：句意：我女儿想要在有湖泊的地方照相。考查地点where在前的完全倒装。正常语序为a lake lies where。
答案：lies
2．Only then ________ she realize how serious the situation had been.
解析：句意：只在那时她才意识到形势有多严峻。考查倒装。根据“Only＋副词”放在句首要使用部分倒装和时态暗示，可知填did。
答案：did
3．Never before ________ I seen such a wonderful park，where I'd like to pay a visit again.
解析：句意：我从没见过这么美丽的公园，我想再来参观一次。否定副词短语放在句首，句子要用部分倒装形式，never before常与现在完成时连用。
答案：have
4．For a moment nothing happened; then ________(come) cheers from the excited audience.
解析：句意：片刻间什么也没发生，然后从兴奋的观众那里传来了欢呼声。考查then位于句首的完全倒装。根据语境，填过去式。
答案：came
5．Not only ________Hunan TV's reality show Dad, Where Are We Going received high praise, but also it has made the stars and their lovely kids more popular.
解析：句意：湖南卫视真人秀节目《爸爸去哪儿》不但受到高度的赞扬，而且也让这些明星和他们可爱的孩子们更受欢迎了。在not only...but also结构中，not only引导的句子要用部分倒装结构；根据题干中的has made及received可知此处应该是现在完成时，故填助动词has。
答案：has
6．Only when he apologizes for his rudeness ________ I speak to him again.
解析：句意：只有在他向我为自己的粗鲁道歉后我才会再和他说话。当“Only＋状语从句”置于句首时，句子应该用部分倒装结构，再根据语境和时间状语从句中的apologizes可知此处表达的是将来会做某事，所以填will。
答案：will
7.John has not yet passed the driving test, and neither ________ Henry.
解析：句意：约翰还没有通过驾照考试，亨利也没有通过。否定副词neither置于句首，后面的主谓语需“部分倒装”，根据上一分句中的谓语动词has...passed(现在完成时)和该分句的主语Henry，可推知设空处答案为has。
答案：has
8.—It's nice. ________ before have I had such a special drink!
—I'm glad you like it.
解析：句意：——太棒了。我从来没喝过这么特别的饮料！——很高兴你喜欢。由空格后的before、句子的部分倒装结构及时态可知填Never。
答案：Never
9.Absurd ________ it might sound, everyone present was amused by his adventure story in Africa.
解析：句意：虽然那听起来很荒诞，但是在场的每个人都被他在非洲的历险故事逗笑了。“形容词＋as/though＋主语＋谓语”相当于although/though引导的让步状语从句。
答案：as/though
10.—I like this dress better than that one.
—________ do I, but it costs almost twice as much.
解析：句意：——与那条连衣裙相比，我更喜欢这条。——我也是，但这条连衣裙的价格几乎是那条的两倍。此题考查部分倒装。“so＋助动词/情态动词/be动词＋主语”，表示“也……”。
答案：So
11.On the top of the hill ________(stand) a temple where the old man once lived.
解析：句意：山顶上有座庙，这位老人曾经在那里住过。此题考查完全倒装。表示地点的介词短语置于句首，且主语为名词时，该句的主谓部分需完全倒装。本句的主语为a temple(第三人称单数)，故设空处为stands。
答案：stands
12.________ it rain tomorrow, we would have to cancel the football match.
解析：句意：万一明天下雨，我们就得取消这场足球赛。“________ it rain tomorrow”为省略了if的虚拟条件句，如果补上if则应为：If it ________ rain tomorrow。根据后面的would have to可知设空处与将来事实相反，if从句谓语动词应为：过去式、“should＋动词原形”或“were to＋动词原形”，结合题干的句子结构可知填Should。
答案：Should
考点二 强调句
1．It is attitude ________ matters much in daily work.
解析：句意：在日常工作中重要的是态度。此句为强调句式，故填that。
答案：that
2．I have no idea why it is ________ he will go there with her.
解析：句意：我不知道他为什么要跟她去那里。考查强调句。同位语从句为强调句型。
答案：that
3.As is known to us, it was 100 years ago ________ Tsinghua University was founded.
解析：句意：众所周知，清华大学是在一百年前建校的。考查强调句型，故用that。被强调部分为100 years ago。
答案：that
4.Between the two generations, it is often not their age, but their education ________ cause misunderstanding.
解析：句意：在这两代人之间，引起误会的常常不是年龄而是教育。此处为强调句型“it is/was...that...”。被强调部分为：not their age, but their education，故答案为that。
答案：that
5.Was it in 1969 ________ the American astronaut succeeded in landing on the moon?
解析：句意：美国宇航员是在1969年成功登陆月球的吗？考查强调句型的一般疑问句形式，即Is/Was it＋被强调部分＋that＋其他成分。
答案：that
6.It was only when I watched Inception a second time ________ I had a better understanding of what it was talking about.
解析：句意：只有在我再次观看《盗梦空间》时我才对它在讲什么有了一个更好的理解。本题考查强调句型。被强调部分为only when I watched Inception a second time。
答案：that
7.________ is it that he is not so friendly as he used to be?
解析：句意：他怎么/为什么不如过去友好了呢？考查特殊疑问句的强调句型。其形式为：特殊疑问词＋is/was＋it＋that＋其他成分。本句改为普通句型后为“________ is he not so friendly as he used to be？”
答案：How/Why
8.Where do you think it is ________ we can buy that best－seller?
解析：句意：你认为在哪里我们可以买到那个畅销品？考查强调句。本句为强调句型的特殊疑问句形式“Where is it that...”，但因为强调句在从句中作think的宾语，所以要用陈述句语序。
答案：that
9.It was not until 7：30 ________ he got home yesterday, so his parents were very worried.
解析：句意：昨天直到7：30他才到家，所以他的父母很担心。考查强调句。本题是含有not until的强调句式“It was not until...that...”。
答案：that
10.How time flies! It's in two months ________ we'll say goodbye to our high school life.
解析：句意：时间过得真快！两个月之后我们就要对我们的高中生活说再见了。考查强调句。因为去掉It's，that之后，剩余的部分可构成一个完整的句子，所以是强调句。
答案：that
考点三 主谓一致
1.The truth is that the passers－by, rather than the driver, ________(blame) for the terrible accident.
解析：句意：事实真相是过路人而不是司机对事故负责。题干中的主语是passers－by“过路人”，为复数形式；尽管后面加了rather than短语，句子谓语的数应与最前面的主语一致。be to blame是个习惯用法，主动形式表示被动含义。
答案：are to blame
2.Moments of failure ________(be) unavoidable, but most of us abandon the goal entirely when slight failures and setbacks start piling up.
解析：该句的主语是Moments，谓语动词该用复数形式，根据语境应用现在时，故填are。
答案：are
3.Newspapers, as well as magazines, ________(play) an important role in daily communication.
解析：“as well as”意为“像……一样”，两个名词中间用as well as连接时强调的是前面一个，谓语应同前面一个名词保持一致。本题中，强调的是“newspapers”，所以play的形式应与newspapers保持一致。newspapers作主语时谓语动词用复数形式。
答案：play
4.The New York Times ________(be) widely accepted in America.
解析：考查主谓一致的用法。句意：《纽约时报》在美国被广泛接受。题干中的主语是一种杂志名词，谓语动词应用单数形式。
答案：is
5.This kind of operation ________(know) as a robotic operation.
解析：主语为单数形式，且与know之间存在被动关系，故填is known。
答案：is known
6.Almost all international conferences and competitions ________(conduct) in English.
解析：考查主谓一致和被动语态的用法。分析句子结构可知，空格前是主语部分，所填词为谓语，且主语与conduct之间存在被动关系，因此要用被动语态；根据句意可知句子说的是一般事实，用一般现在时表示。因此答案是are conducted。
答案：are conducted
7.Acquiring the wisdom to make wise choices ________(be) the lasting challenge of being human.
解析：考查主谓一致。该句的主语是acquiring短语作主语，谓语动词用单数第三人称形式，故填is。
答案：is
8.A teacher of English and class teacher ________(tell) us something about volunteer workers now.
解析：句子主语为“A teacher of English and class teacher”为一个人，故后面的谓语动词要用第三人称单数形式；从now可知，用现在进行时。
答案：is telling
9.When and where this took place ________(be) still unknown.
解析：主语为主语从句，虽由and连接但却指的是同一件事，故谓语动词用单数形式，且表示被动，故填is。
答案：is
10.Every means ________(try), but none proved successful.
解析：means的单复数同形，从every可知这里是单数，因此谓语动词也用单数，而且根据句意可知，是“每个办法都被尝试过了”，故用被动语态。
答案：has been tried
11.—Hey! Here is a message on my cellphone, telling me that I have won the first prize of a weekend for two in Paris.
—Delete it! It's a trick. Many a person ________(cheat) by such tricks.
解析：句意：——嘿，我手机上有一条短信，告诉我我已获得巴黎周末双人游的大奖。——删掉吧。那是个骗局。许多人被这样的短信骗过。“many a＋单数名词”作主语，谓语动词用单数形式，再根据句意可知，许多人已经被骗过，故用现在完成时的被动语态。
答案：has been cheated
12.One survey shows that large quantities of water ________(be) wasted every year in China, and that one third is available to be saved.
解析：large quantities of＋不可数名词/复数可数名词作主语时，谓语动词常用复数形式，即由quantities决定，且由every year可知用are。
答案：are
考点四 其他特殊句式
1．If parents never expect their children to be helpful at home, they are sure ________(be)．
解析：句意：如果父母从不要求孩子做家务，他们一定不会(做家务)。考查不定式的省略。完整句子为they are sure not to be helpful at home。根据句意填否定形式。
答案：not to be
2．—Have you got any particular plans for the coming winter vacation?
—Yes, ________ possible, I'm going to visit my grandparents.
解析：句意：——对于即将到来的寒假你有特别的计划吗？——是的，如果可行的话，我要去看望祖父母。考查省略。根据句意，填if。
答案：if
3．________ seems to be intense competition among students to enter a key university.
解析：句意：学生们进入重点大学的竞争似乎很激烈。考查there be句型。there be句型中的be有时可用seem to be等替换。
答案：There
4．—How is the man injured in the accident?
—The doctor said if ________ (treat) in a proper way, he was more likely to be saved.
解析：句意：——事故中受伤的人怎么样了？——医生说如果治疗合理，他很有可能活下来。考查省略。if treated是if he was treated的省略。
答案：treated
5．Don't blame the worker.He just carried out the order as ________(tell)．
解析：句意：不要责备这个工人，他只是按照要求去完成命令的。as told是as he was told的省略。
答案：told
6．________possible, they will meet you at the airport but if they can't arrive on time，you can take a taxi instead.
解析：句意：如果可能的话，他们会去机场接你，可是如果他们不能按时到达的话，你可以乘出租车。根据句意，把空格处补全后为if it is possible，所以填if。
答案：If
7．________(follow) the instructions on the packet when you take the drug and it, I think, will work soon.
解析：句意：吃药的时候按照包装上的说明去吃，我想它很快就会起作用的。根据题干中的and可知，此处是动词原形开头引导的祈使句，故填Follow。
答案：Follow
8．There is no doubt that eating organic food will make you healthier, is ________？
解析：句意：毫无疑问，食用有机食物会使你更健康，是吗？考查反意疑问句。根据There is no doubt来确定反意疑问句用is there。
答案：there
9．________ fun it is to take a rest after a long run!
解析：句意：长跑之后好好休息一下真的很快乐！考查感叹句。what后加名词。
答案：What
10．—Shall he be told about the plan for the weekend?
—Yes, he ought ________(be)．
解析：句意：——可以告诉他周末的计划吗？——是的，他应该被告知。考查不定式的省略。不定式中含有be或助动词have时不省略be或have。
答案：to be
11.One of my favorite saying is, “________(laugh) and the world laughs with you.”
解析：句意：我最喜欢的一句谚语是：“欢笑，世界会与你一起欢笑。”本句采用了“祈使句＋and＋陈述句”句型，设空处为祈使句，故用动词原形。
答案：Laugh
12.—I was late for the lecture last night.
—________ come? You started early last night.
解析：句意：——昨晚的讲座我迟到了。——怎么会呢？昨晚你很早就动身了。How come？怎么会呢？怎么搞的？
答案：How
13.I don't think he could have finished writing his paper last night, ________？
解析：句意：我认为昨晚他不可能写完他的论文了，是不是？本句考查反意疑问句。本题的解题思路是：I don't_think he could_have_finished writing his paper last_night,_________？→He couldn't_have_finished writing his paper last_night,_________？→I am_sure he didn't_finish writing his paper last_night,_________？→I am sure he didn't finish writing his paper last night, did_he？→I don't think he could have finished writing his paper last night, did_he?
答案：did he
14.As far as I can see, ________ is no possibility that he will win the tennis match this time.
解析：句意：依我看，他不可能在这次网球比赛中获胜。There is(no) possibility that...为固定句式，意为：(没有)可能……。
答案：there
15.The little boy came riding full speed down the motorway on his bicycle. ________ dangerous a scene it was!
解析：句意：那个小男孩骑着自行车沿着机动车道全速而来。多危险的一幕啊！本题考查感叹句。感叹句的句型之一是：How＋形容词＋a/an＋名词单数＋主语＋谓语！
答案：How
探
究
提
升
1.Behind the door, there ________(lie) a little dog and two cats.
解析：句意：门的后面，有一条小狗和两只猫。there be 结构中的谓语动词be有时可用lie，stand，go，exist，live，come，occur等替换；如果有两个或两个以上的主语，there be句型中的谓语动词应采用临近原则，故此处谓语动词应与单数名词a little dog在数上保持一致，应填动词lie的第三人称单数形式。
答案：lies
2．I have never been late, and ________ do I plan to make an exception now.
解析：句意：我从来没有迟到过，现在我也不打算破例。固定句型“nor/neither＋助动词/系动词/情态动词＋主语”意为“……也不这样”。句中的否定词never是做题的关键。
答案：nor/neither
3．So clearly ________ she speak English that she can always make herself understood.
解析： 句意：她说英语说得如此清晰，以至于别人总是能听懂。so＋adj./adv. ....that ...句型中，要用部分倒装语序。由“she can always”可知，应用一般现在时。
答案：does
4．“What was it ________ made him change his mind？” she asked Bob's father.
解析：她问Bob的爸爸：“是什么让他改变了主意？”特殊疑问句的强调句式：特殊疑问词＋is/was it that ...
答案：that
5．It is not what you are studying but how you are studying it ________ counts.
解析：句意：重要的不是你在研究什么，而是你如何进行研究。此处it is ...that ...强调句型，强调的是“not what you are studying but how you are studying it”。
答案：that
6．Tom doesn't believe we will succeed, ________ he?
解析：句意：Tom不相信我们会成功，是吗？句子前半部分为主从复合句，主句的主语为Tom，是第三人称单数，且谓语为否定形式，故反意疑问部分应用第三人称单数的肯定形式。
答案：does
7．________ beautiful furniture you've got in your apartment!
解析：句意：你公寓里的家具真漂亮！what引起的感叹句句型为“what＋a/an＋形容词＋可数名词单数＋其他”或“what＋形容词＋可数名词复数/不可数名词＋其他”，此处furniture为不可数名词。
答案：What
8．The newsmen hardly raised any questions at the press conference, ________ they?
解析：句意：这些新闻记者在记者招待会上几乎没有提出任何问题，是吗？在反意疑问句中，如果陈述部分含有hardly, never，few，nothing等否定或半否定词时，反意疑问部分用肯定形式。由“raised”可知，应填did。
答案：did
9．It was not the monitor but her twin sister ________ we met on the farm yesterday.
解析：句意：昨天我们在农场遇见的不是班长而是她的双胞胎妹妹。此处指人，既可用who也可用that。
答案：who/that
10．Not only ________ they need clothing, but they are also short of water.
解析：句意：他们不但需要衣服，而且还缺水。not only置于句首时，句子要用部分倒装。由are可知此处应用一般现在时，故应填do。
答案：do
11．________(listen) to the teacher carefully in class, or you will not catch what he is saying.
解析：句意：课堂上认真听老师讲课，否则你会听不懂老师说的是什么。由后面的“or you will not catch what he is saying”可知，这是考查“祈使句＋or＋陈述句”句型，故用Listen。
答案：Listen
12．Only when we had studied the data again ________ we realize that there was a mistake.
解析：句意：只有当我们再次研究了这些数据的时候，我们才意识到有一个错误。only＋状语从句放于句首时，主句要进行部分倒装。由“had studied”和“was”可知，此处应用一般过去时，故应填did。
答案：did
13．Don't forget to take your camera when you leave tomorrow, ________ you?
解析：句意：明天当你离开时不要忘记带上你的相机，好吗？当陈述部分是祈使句的否定形式时，反意疑问部分通常用肯定形式will you。
答案：will
14．Carrie laughed, nodding as if ________(say) she understood. Her eyes gleamed(闪光)．
解析：句意：Carrie笑了，点了点头，好像要/在说她明白了。她的眼睛闪着光芒。此处as if to say相当于as if she were going to say；as if saying相当于as if she were saying。
答案：to say/saying
15．He wanted to take the clock apart, but his mother warned him ________(not)．
解析：句意：他想拆开钟表，但他的妈妈警告他不要(拆钟表)。动词不定式作宾语补足语时，省略to后的动词部分，用to代替整个不定式。
答案：not to
16．They must have finished their work last night, ________ they?
解析：句意：他们昨晚一定完成他们的工作了，不是吗？在反意疑问句中，如果陈述部分谓语含有must have done，且句中有时间状语，则按时间状语确定反意疑问部分的谓语。根据“last night”可知此处用didn't。
答案：didn't
17．We're never afraid of making mistakes, because only by making mistakes and correcting them ________ we improve ourselves constantly.
解析：句意：我们从不害怕犯错误，因为只有通过犯错误并纠正错误我们才能/才会不断地改善自己。当“only＋介词短语”放在句首时，句子要用部分倒装结构。根据句意可知，此处可用情态动词can或will。
答案：can/will
18．Little ________ he know that the police were after him.
解析：句意：他一点儿也不知道警察在追捕他。否定词little置于句首时，句子要部分倒装。由were可知此处应用一般过去时，故应填did。
答案：did
19．Not until he blocked her way ________ she notice the man.
解析：句意：直到那个男人挡住了她的去路，她才注意到他。当not until置于句首时，主句要用部分倒装。由blocked可知此处应用一般过去时，故应填did。
答案：did
20．________(be) they to arrive before we leave the day after tomorrow, we would have a wonderful dinner party.
解析：句意：要是他们在后天我们出发前到达，我们就可以有一个愉快的宴会了。由将来的时间状语“the day after tomorrow”可知，这是对将来的假设；当if从句中有were, should，had时，可以省略if把were，should，had提前。结合“they to arrive”可知，此处应填Were，相当于“If they were to arrive before we leave the day after tomorrow”。
答案：Were
课件92张PPT。
