20．Not having completed（not complete） the program，they have to stay there for another two weeks．

分析 沒有完成這個項目，他們只好在那里再呆兩個星期．

解答 答案是Not having completed．本題考查分詞做狀語；逗號后面是完整的句子，句中不存在并列連詞或引導(dǎo)從句的引導(dǎo)詞，所以判斷not complete必須要非謂語的形式；本題中需要的是分詞做狀語；分詞做狀語時分詞的選擇是看分詞和句子主語之間的關(guān)系：分詞和句子主語之間是主謂關(guān)系（主動關(guān)系），用現(xiàn)在分詞；分詞和句子主語之間是動賓關(guān)系（被動關(guān)系），用過去分詞；題干中not complete和主語they之間是主動關(guān)系，所以用現(xiàn)在分詞；此外分詞完成式表示分詞的動作在謂語動詞之前已經(jīng)發(fā)生或完成，相當(dāng)于after引導(dǎo)的時間狀語從句；本句中指沒有完成項目之后，才不得不再待兩個星期；所以用現(xiàn)在分詞完成式；非謂語動詞的否定式在非謂語前直接加not；故答案用Not having completed．

點評 本題是要求用所給動詞的適當(dāng)形式填空，解題時首先考慮句中需要的是謂語動詞還是非謂語動詞；其次，如果是謂語動詞關(guān)注時態(tài)、語態(tài)和數(shù)的變化；如果是非謂語動詞要聯(lián)系非謂語的基本用法判斷非謂語的形式．

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源： 題型：填空題

10．Thepuzzled （puzzle） teenager worked very hard to find out what had happened to the space capsule．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

11．It is natural that young people are often uncomfortable when they are with their parents．They say that their parents don't understand them．They often think that their parents are out of touch with modern ways； that they are too serious or too strict with their children； and that they seldom give their children a free hand．
Actually parents also find it difficult to win their children's trust and they tend to forget what they were like when young．
For example，young people like to act without much thinking．It is one of their ways to show that they have grown up and they can face any difficult situation，while older people worry more easily．Most of them plan things ahead，at least in the back of their minds，and do not like their plans to be upset by something unpleasant．When you want your parents to let you do something，you will have better success if you ask before you really start doing it．
Young people often make their parents angry with their choices in clothes，in entertainment （娛樂） and in music．But they do not mean to cause any trouble； it is just that they feel cut off from the older people's world，into which they have not yet been accepted．It is natural enough that you want to live a life in your own way，after being a child for so many years，when you were completely under your parents'control．
However，you should know that if you plan to control your life，you'd better win your parents over and try to get them to understand you．If your parents see that you have a high sense of responsibility，they will certainly give you the right to do what you want to do．
25．The passage is mainly written forC．
A．parents  B．older people  C．young people  D．teachers
26．Young people like to have clothes，entertainment and music in their own way，becauseC．
A．they want to make their parents angry
B．they try to get their parents into trouble
C．they want something new and different from the older people
D．they know they are cleverer than the older people
27．What does the writer mean by"they seldom give their children a free hand"？D
A．They don't try to help their children．
B．They always keep their children busy．
C．They don't like their children's choice of clothes．
D．They don't let their children do what they like．
28．The writer suggests that you shouldCif you want to control your own life．
A．talk to your parents 
B．create your own culture
C．show that you are responsible enough   
D．plan everything carefully．

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

8．The spread of"borrowed words"is mostly due to the easilyaccessed （access） Internet and television programs from across the world．

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

15．With the great weighttaken（take） off her mind，she passed the text successfully．

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

5．The question of whether English will continue to change in the future is easyto answer （answer）．

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

12．Looking （look） up every new word in the dictionary will certainly be a waste of time．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

9．Although his 1-year-old smart-phone still works perfectly，Li Jijia already feels the need to replace it．
"There are many better ones available now．It's time to upgrade（更新）my phone．"
Li's impatience is shared by many．Shortly after the season when new products are released，many consumers feel the urge to upgrade their electronic equipment，even though the ones they have still work just fine．
As consumers'minds are occupied by Apple's newly released products and debate whether the Google tablet is better than the new Amazon Kindle，it might be time to take a step back and ask："Do we really need the latest upgrades？"
According to Donald Norman，an American author，"planned obsolescence （淘 汰）"is the trick behind the upgrading culture of today's consumer electronics industry．
Electronics producers strategically release new upgrades periodically，both for hardware and software，so that customers on every level feel the need to buy the newest version．
"This is an old-time trick-they're not inventing anything new，"Norman said．"This is a wasteful system through which companies-many of them producing personal electronics-release poor-quality products simply because they know that，in six months or a year，they'll put out a new one．"
But the new psychology of consumers is part of this system，as Norman admitted，"We now want something new，something pretty，the next shiny thing．"In its most recent year，Apple's profit margin was more than 21percent．At Hewlett-Packard，the world's biggest PC maker，it was only 7percent．
Apple's annual upgrades of its products create sales of millions of units as owners of one year's MacBook or iPhone line up to buy the newest version，even when the changes are slight．
As to Li Jijia，the need for upgrading his smart-phone comes mainly from friends and classmates．When they are switching to the latest equipment，he worries about feeling left out．
"Some games require better hardware to run，"said Li．"If you don't join in，you lose part of the connection to your friends．"

58．What's the author's attitude towards people's desire for new products？C
A．Supportive．B．Happy．C．Critical．D．Unclear．
59．Why is Apple Company interested in producing latest version of its product？D
．To provide customers with better service．
B．To defeat other competitors like Hewlett-Packard．
C．To establish a favorable image of itself among its customers．
D．To make huge profits out of its business．
60．How do the electronics companies successfully promote their latest products？A
A．They make full use of the"planned obsolescence"strategy．
B．They make a fool of customers by recycling their old products．
C．They control the customers'way of thinking while shopping．
D．They invent new products to attract the youth like Li Jijia．
61．It can be inferred from the last paragraph that Li Jijia feels the need to replace his smart-phone as a result ofB．
A．new psychologyB．pressure from friends and classmates
C．life style D．friends'expectation．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

10．It is very common that many students complain they lack concentration．For example，"I can't concentrate．""My mind wanders when I try to study．"
We all have the ability to concentrate．Think of the times when you were attracted to a super novel or the times when you were playing your guitar or piano．But at other times your mind races from one thing to another．Here are some tips．
Rest from time to time．Remember to take short breaks．Lectures are usually 50minutes long，and that's about the length of time most people can direct their attention to one task．But that's just an average．Your concentration time might be shorter （20-35minutes） or longer （perhaps 90minutes）．When you take a break，you get more oxygen to your brain!When we sit for long periods，blood tends to be pooled in our lower body and legs．Get up and walk around the room for a couple of minutes．As a result，more oxygen is carried to the brain and you can concentrate better．
         If you study one subject for a long time，you may find it hard to concentrate．Many students improve their concentration by changing one subject to another every one to two hours．In this way you can pay more attention to something that's different．
Reward yourself．Give yourself a reward when you've completed a task．The task might be small，such as staying with a difficult paper until you've finished．But giving yourself a reward can help you be more interested in doing other tasks．
Increase your activity level．Your concentration wanders more easily if you just read an article straight through．Instead，take the heading for each part and turn it into a question．For this part，that would be，"How can I increase my activity level while studying？"Then study that part to answer that question．Do this routinely．The questions give us a focus for each part and increase our involvement（參與）．

60．According to Paragraph 3，what's the purpose of walking around？B
A．To help us stay fit．
B．To provide the brain with more oxygen
C．To benefit our lower body．
D．To increase our concentration time to 90minutes．
61．What's the best title for Paragraph 4？C
A．Study for one hour each time．
B．Do something difficult．
C．Change subjects．
D．Study in different ways．
62．In the last paragraph，the writer suggests thatD．
A．we just read the heading of some articles
B．we do our best to read an article straight through
C．we ask other people questions about the article we are reading
D．we ask ourselves questions about what we are reading
63．The writer wrote the passage toC．
A．encourage us to try to concentrate
B．give us the reasons for a lack of concentration
C．teach us how to concentrate while studying
D．list the benefits we can get from concentration．

查看答案和解析>>

同步練習(xí)冊答案