I saw him three days ago . 我三天前看见他的。 ( 从现在起倒数的三天 )

　　　　I caught this cold two weeks ago .

　　　　注意ago 是"自今…之前"，before 是"自过去…之前。"

　　　　25 . either … or 与 neither … nor 和 both … and 的区分

　　　　①either … or … ( 或者…或者… ) ，neither … nor … ( 既不…也不… ) ，这是两组表示选择的关联连词，均用来连接两个在语法功能上相同，在结构上相称的并列成分。当它们连接并列主语时，谓语动词的人称和数量常与最邻近的主语 ( 即 or 或 nor 后面的名词 ) 保持一致。如：

　　　　Either you or she is correct ( right ) . 或者你对，或者她对 ( 不是你对，就是她对 ) 。

　　　　②either … or 连接两个或两个以上的分句或并列成分，提供两种或两种以上的可能性。如：

　　　　Come either today or tomorrow .

　　　　③neither 或 nor 单独使用时，后面所接句子的主语和谓语要倒装。如：

　　　　You don't know his address , neither do I .

　　　　both … and 表示"两者都"，"既……又……"，是 neither … nor 的反义词组。试比较：

　　　　It was both cold and wet .

　　　　It is neither cold and hot .

　　　　Both John and Mary were there .

　　　　25 .购物时的交际用语

　　　　( 1 ) 售货员招呼顾客，提供服务时的用语：

　　　　What can I do for you ? / Can I help you ?

　　　　( 2 ) 顾客表示想买什么时的用语：

　　　　I'd like to buy / get… 我想买…… / I want… 我要……/ I'm looking for…我在找……/ May I have a look at… ? 我可以看看……吗 ? / Have you got… ? 你 ( 们 ) 有……吗 ?

　　　　( 3 ) 谈论尺寸、大小、颜色、价格时的用语：

　　　　What size / colour / kind do you want ?

　　　　I'm afraid we haven't got…，but we've got…

　　　　Do you have any other kind / size / colour ?

　　　　How much / many…do you want ?

　　　　What about…… ?

　　　　That pair looks nice .

　　　　May / Can I try it / them on ?

　　　　Try on , please .

　　　　How much is it ? / How much does it cost ?

　　　　That's a bit / too expensive .

　　　　It's too expensive . I don't think I'll take it .

　　　　Have you got anything cheaper ?

　　　　That's cheap / fine / nice . I'll have / take it .

　　【 妙文赏析 】

　　　　Doctor's Advice

　　　　Once an old man went to the hospital to see a doctor . After having examined him carefully , the doctor said , "It's useless for you to take any medicine because no medicine will help you . You'd better have a good rest . Go to stay in a quiet country place for a month , go to bed early , drink some milk , walk a lot and smoke only one cigar a day . "

　　　　"Thank you very much , "said the old gentleman , "I shall do everything you say . "

　　　　Two weeks later , the old man came to the doctor again . "How are you ? "said the doctor , "I'm very pleased to meet you . You look much happier . "

　　　　"Oh , doctor , "said the old man , "I feel quite well now . I had a good rest . I went to bed early . I drank much milk . I walked a lot . Your advice certainly helped me . However , you told me to smoke one cigar a day . One cigar a day almost killed me at first . It's no joke to start smoking at my age , you know . "

　　【 思维体操 】

　　　　下面是与购物有关的三个谜语，请猜一猜。

　　　　1 . Mary's mother asked her to buy something .

　　　　She said , "The thing is a five - letter word . Its first letter is in paint and also in draw . Its second is in peace but never in war . Its third is in up but not in down . It fourth is in village but not in town . Its fifth is in dress but not in suit . The whole is a most delicious fruit . "

　　　　Mary thought for a minute , then she knew what her mother wanted her to buy . What is it ?

　　　　2 . Mary asked her mother how many she needed to buy . Her mother said . "The number is between one and ten . If you double the number , the result will be the same as if you added two to it . What is the number ? "

　　　　3 . Two women went shopping . One spent ten dollars more than the other , and together they spent forty dollars . How much money did each of them spend ?

　　　　答案：1 . apple 2 . two 3 . One spent fifteen dollars and the other spent twenty - five dollars .

　　三、智能显示

　　【 心中有数 】

　　　　单元语法发散思维

　　　　过去完成时态

　　　　过去完成时由"助动词 had ( 用于各种人称和数 ) + 过去分词"构成。主要表示在过去某一时刻或某一动作之前就已经完成或发生的动作或存在的状态。

　　　　这个时态常用 by 或 before 等引出过去的某一时刻，也常用状语从句或上下文表示过去的某一动作。其句型结构简见下表：

　　　　动词 be

　　　　动词 do

　　　　肯定式

　　　　By then I had been there .

　　　　By nine o'clock last night she had done the work .

　　　　否定式

　　　　By then he had not yet been there .

　　　　By nine o'clock last night I had not yet done the work .

　　　　疑问式

　　　　Had they been there by then ?

　　　　Had you done the work by nine o'clock last night ?

　　　　基本用法：在过去某一时刻或某一动作之前已经完成或发生的动作或存在的情况。如：

　　　　I had learned 1000 English words by the end of last term . 在上学期结束时，我已学了一千个英语单词。

　　　　They still hadn't finished the work by Friday .

　　　　表示某个动作或状态一直延续到过去某一时刻。

　　　　It had snowed for an hour when the train arrived .

　　　　The old man died when the doctor arrived . ( 即老人的死是在医生到达的时候，或者刚刚到达之后 )

　　　　The old man had died when the doctor arrived . ( 即医生到达时，老人已死了 )

　　　　叙述比过去情况更早的动作或状态。

　　　　I found the watch I had lost .

　　【 动手动脑 】

　　　　单元能力立体检测

　　　　Ⅰ . 词汇：

　　　　用所给单词的适应形式填空：

　　　　1 . ______ ( luck ) , he didn't hurt badly .

　　　　2 . The ______ ( forty ) room is mine .

　　　　3 . Jack can jump ______ ( far ) than Jim .

　　　　4 . The door bell was ringing while he fell ______ ( sleep ) .

　　　　5 . The old man has been ______ ( die ) for half a year .

　　　　Ⅱ . 选择填空

　　　　1 . My father was busy ______ the car for his son .

　　　　A . to mend B . mend C . mends D . mending

　　　　2 . There are nine _______ students in their school .

　　　　A . hundred B . hundreds C . hundred of D . hundreds of

　　　　3 . None of you read _______ .

　　　　A . carefully enough B . careful enough C . enough carefully D . enough careful

　　　　4 . Kate' sweater ______ , please buy a new one for her .

　　　　A . was worn out B . were worn out C . worn out D . have worn out

　　　　5 . ______ do you play basket - ball ? ______ Once a week .

　　　　A . How long B . How often C . When D . How many times

　　　　6 . My mother told me _______ in the river .

　　　　A . not to swim B . to not swim C . not swim D . don't swim

　　　　7 . How much did you ______ on that bike ?

　　　　A . take B . pay C . cost D . spend

　　　　8 . Most people in the world like eating cakes ______ their birthday .

　　　　A . at B . in C . on D . from

　　　　9 . How far is your school to the sttion ?

　　　　A . Very soon . B . On foot . C . Ten minutes . D . Two kilometres .

　　　　10 . How long have you _______ Beijing ?

　　　　A . been to B . gone to C . come to D . been in

　　　　Ⅲ . 完成对话

　　　　A . Excuse me ! Could you tell me the ( 1 ) to the post office ?

　　　　B . Certainly , Go down this street and ( 2 ) the third turning ( 3 ) the left . Then walk on ( 4 ) you reach the end . You will find it .

　　　　A . How long will it ( 5 ) to get there ?

　　　　B . I think it's about twenty minutes' walk .

　　　　A . Thank you very much .

　　　　B . Not ( 6 ) ( 7 ) . It's a ( 8 ) .

　　　　答案：Ⅰ 1 . luckily 2 . fortieth 3 . further 4 . asleep 5 . dead Ⅱ . 1 . D 2 . A 3 . A 4 . A 5 . B 6 . A 7 . B 8 . C 9 . D 10 . D Ⅲ . 1 . way 2 . take 3 . on 4 . until 5 . take 6 . at 7 . all 8 . pleasure

　　【 创新园地 】

　　　　同学们在日常生活中你的衣物及日用品是家人代购呢，还是你或者你和你的同学亲自到商场去挑选呢 ? 希望你踏入社会，了解生活，用简单的英文叙述你的一次购物经历。注意：你在商场看到的是Bob和Don的购物情况。

　　　　创新园地答案：

　　　　Bob and Don wanted to buy some new clothes , so they went shopping together . First , they went to the men's department to see the suits that were on sale . The salesman helped them find the right size and they each tried on several suits . Bob found a light gray suit and bought it . Don finally selected a blue suit . The boys also bought two pairs of pants because they were not too expensive .

　　　　Next , they went to the shoe department . The clerk measured their feet and brought each of them several pairs of shoes to try on . It didn't take them very long to get their shoes . They didn't really need socks , but these were on sale , too , and they decided to buy several pairs .

　　【 同步题库 】

　　　　Unit 21

　　　　Ⅰ . 单项填空

　　　　1 . - Do you speak either French or Russian ?

　　　　- I'm sorry , I don't speak ______ .

　　　　A . either B . neither C . too D . both

　　　　2 . He sat in the car with a policeman on _______ side of him .

　　　　A . each a B . both C . every D . either

　　　　3 . I don't like the black - and - white TV set . I'd like to have it _______ .

　　　　A . sell B . to be sold C . sold D . selling

　　　　4 . He was much pleased _______ the good news .

　　　　A . at B . with C . on D . to

　　　　5 . He didn't want to _______ in his studies .

　　　　A . fall before B . fall behind C . fall beside D . fall fater 6 . We don't know _______ to ask questions .

　　　　A . who B . whose C . what D . which

　　　　7 . He can't decide _______ to buy .

　　　　A . what size of shoes B . how large of shoes

　　　　C . how much size D . how many size of shoes

　　　　8 . We are not sure ______ he will be here in time .

　　　　A . what B . when C . where D . if

　　　　9 . He taught me ______ to write an English letter .

　　　　A . what B . whether C . which D . how

　　　　10 . Which suit of trousers are _______ your size ?

　　　　A . on B . at C . to D . in

　　　　11 . She was busy _______ her bike when I came in .

　　　　A . to brush B . brushes C . brushing D . brushed

　　　　12 . Why did you ______ out this pair of shoes again ?

　　　　A . worn B . wear C . wearing D . put

　　　　13 . If you buy shoes , you'd better _______ them on first .

　　　　A . walk B . look C . wear D . try

　　　　14 . He doesn't know ______ to do this evening .

　　　　A . where B . how C . what D . why

　　　　15 . I'd better buy a new pair of shoes because _______ worn out .

　　　　A . it is B . this is C . that is D . they are

　　　　16 . He asked whether ______ begin at nine .

　　　　A . the meeting would B . would the meeting

　　　　C . will the meeting D . the meeting will

　　　　17 . After we have done our homework , we _______ to bed .

　　　　A . went B . go C . have gone D . had gone

　　　　18 . She has fallen ill _______ .

　　　　A . a week ago B . for week C . since last week D . of a week

　　　　19 . He _______ Shanghai for a meeting .

　　　　A . has gone to B . has been to C . went D . had gone

　　　　20 . Have you ______ the story about Liu Hu Lan ?

　　　　A . heard B . heard C . listened D . listen to

　　　　Ⅱ . 在改写后的句子空白处填入一个适当的英语单词，使句意合乎要求或与原文相符

　　　　1 . What size shoes do you wear ?

　　　　What ______ ______ ______ you shoes ?

　　　　2 . A young man named John had just left school for the last time .

　　　　A young man ______ ______ John had just leave school for the last time .

　　　　3 . I haven't seen you for months .

　　　　I saw you ______ ______ .

　　　　4 . The box is so heavy that he can't move it .

　　　　The box is ______ ______ for him _______ _______ .

　　　　5 . The old woman was so angry that she could say nothing .

　　　　The old woman was ______ angry to say _______ .

　　　　6 . What's the price ( 价格 ) of your sweater ?

　　　　How _______ does your sweater _______ ?

　　　　7 . She got up too late to catch the early train .

　　　　She got up ______ late ______ she ______ catch the early train .

　　　　Ⅲ . 补全对话

　　　　下面是一段对话，请在每个空白填入一个适当的英语单词，使对话意思完整。

　　　　A：What can I do for you ?

　　　　B：I'm ( 1 ) for a pair of black shoes .

　　　　A： ( 2 ) size do you want ?

　　　　B：Size five .

　　　　A：I'm ( 3 ) we haven't got any black shoes in that size at the moment . But we've got some brown ( 4 ) .

　　　　B：Hmm . Have you got any ( 5 ) kind ?

　　　　A：What about those shoes ( 6 ) there .

　　　　B：Well , that ( 7 ) looks nice . How much do they ( 8 ) ?

　　　　A：Thirty - five yuan .

　　　　B：Hmm ! That's a ( 9 ) expensive . Can I try them ( 10 ) , please ?

　　　　A：Certainly .

　　　　Ⅳ . 完形填空

　　　　A rich man and his wife went into a shop to buy a watch . ( 1 ) of them was very young . They looked at a lot of watches , and after ( 2 ) an hour they found two very beautiful , but they had not ( 3 ) been able to choose ( 4 ) them . One of them was very expensive . and ( 5 ) was quite a lot cheaper .

　　　　Of course , the shopkeeper wanted to ( 6 ) them the more expensive one , because then he would ( 7 ) more money from ( 8 ) , so he said to the lady . "Oh , go on . ( 9 ) his money . If you don't , he will only spend it on his second wife . "

　　　　( 10 ) several seconds nobody said a word , and then the lady said angrily , "I'm his second wife ! "

　　　　1 . A . Neither B . Some C . Several D . Both

　　　　2 . A . two B . one C . it D . half

　　　　3 . A . already B . yet C . how D . have

　　　　4 . A . in B . between C . on D . for

　　　　5 . A . the other B . other C . others D . all

　　　　6 . A . give B . show C . keep D . sell

　　　　7 . A . get B . have C . return D . buy

　　　　8 . A . it B . she C . him D . them

　　　　9 . A . Cost B . Borrow C . Spend D . Lend

　　　　10 . A . Before B . At C . Since D . For

　　　　Ⅴ . 阅读理解

　　　　A . 阅读短文并选择最佳答案

　　　　Parents !

　　　　"Oh do hurry up , Jane ! You're going to be late for work again ! "

　　Mrs Biggs went into her daughter's room . Jane was sitting on the edge ( 边 ) of the bed with her head in her hands .

　　　　"Are you ill or something ? "

　　　　"Just tired ( 累 ) . "

　　　　"You don't get a proper night's sleep . that's your trouble . You were out late again last night . "

　　　　"I was only down at the club . "Jane answered sleepily on her way to the door .

　　　　"That place ! You're always down there these days . Mrs Stone says……"

　　　　Jane paused at the door . "Mrs Stone's never been inside the place . She just imagines 　　things ! It's social club that's all . We sit around and talk . Or have a coke and play records . "

　　　　"Is that all ? "

　　　　Jane went into the bathroom without answering .

　　　　"This room is in a mess again , "complained ( 抱怨 ) her mother"Clothes and magazines all over the place . "She started to tidy them up . Still grumbling ( 发怨言 ) to herself .

　　　　Jane came back into the room , combing her hair .

　　　　"Have you washed already ? "her mother asked .

　　　　"Someone's invited me to a party in London on Saturday night . "Jane said . "Can I go ? "

　　　　"First the club . now parties……"

　　　　"But can I go , though ? "

　　　　"I don't know . "Ask your father Mrs Biggs went out of the room . "Is it the boy who rang last Sunday ? "she called over her shoulder . "The one with the funny voice ? "

　　　　"Funny voice ! "muttered Jane to herself . "Well , he's not her boy friend ! "

　　　　1 . It was difficult for Jane to wake up because she

　　　　A . had not slept well . B . had not slept enough .

　　　　C . did not feel well .

　　　　2 . Jane spent a lot of time at the club . Her mother did not

　　　　A . approve . ( 批准 ) B . care . C . object . ( 反对 )

　　　　3 . Jane described the activities at the club . Her mother

　　　　A . complained . B . did not listen to her .

　　　　C . did not believe her .

　　　　4 . Going to a party in London was something

　　　　A . expensive . B . tiring . C . new .

　　　　5 . The passage shows that Mrs Biggs

　　　　A . disliked her daughter . B . worried about her daughter .

　　　　C . treated ( 对待 ) her daughter badly .

　　　　B . 阅读下列短文，根据内容判断正误。正确的在左边括号写T；否则写F

　　　　Four friends were drinking in a village pub ( 酒店 ) . Their jackets were hanging on the back of their chairs . Suddenly one of them . Jack , shouted that he had lost five pounds . Fred said he was sure nobody there had stolen the money . Tom suggested ( 建议 ) they should all empty their pockets on the table . But the owner of the pub would not let them do that because money all looks the same . Nobody knew what to do . Just then , Jim , at traveller , stood up . He said he would help them find the money .

　　　　Jim said , "I've found out the cocks are good at catching thieves ( 贼 ) . Let's borrow the pub owner's cock . "He put a big black pot ( 锅 ) upside ( 颠倒 ) down on the table . Then he put the cock under it . "After I turn off the lights , "he said , "you must come up one by one and touch the bottom ( 底部 ) of the pot with your right hand . "When the thief done so , the cock will crow ( 啼 ) .

　　　　The others did not know whether they should believe him . One by one they went past the table in the dark , but the cock never made a noise . When the light went on , Jim asked everybody to show his right hand . He looked at each hand in turn and then said , "Fred , give the five pounds back to Jack . ""But the cock never crowed ! "said Fred .

　　　　Jim told Ered to look at all the hands . "They're all black with soot ( 煤烟 ) except yours . Can you explain why you didn't dare touch the pot ? "Fred's face went white . He hung his head .

　　　　1 . All of them put the money on the table ?

　　　　2 . All the man in the pub didn't know what to do except Jim .

　　　　3 . Fred didn't touch the pot because he was out at that time .

　　　　4 . Jim found the thief at last .

　　　　5 . Fred was the thief .

　　　　C . 阅读下列短文，根据其内容选最佳答案，并将其字母在左边的括号内

　　　　A student once said how useless it was to put advertisements ( 广告 ) in the newspapers . "Last week , "said he , "I lost my dictionary in a London shop . Because it was a present , I spent twice of its cost in advertising , but didn't get it back . "

　　　　"How did you write your advertisement ? "asked one of his classmates .

　　　　"Here it is . "said the student , taking out of his pocket a piece of advertisement from a newspaper . His classmate took it and read . "Lost from the City Shop last Sunday evening , an English - French dictionary . The one who finds it will receive ten dollars on leaving it at NO . 10 Water Street . "

　　　　"Now , "said his classmate , "I don't think your advertisement can work . The way in which the words are used very important . Let us try for your dictionary again , and if it can't bring your dictionary back , I'll buy you a new one . "

　　　　He then took a piece of paper out of his pocket and wrote , "If the man who was seen to take a dictionary from the City Shop last Sunday evening doesn't want to get into trouble , he well return the dictionary to No , 10 Water Street , We know who he is . "

　　　　This appeared ( 出现 ) in the newspaper , and on the next morning , the student was surprised when he opened the front door . In the doorway lay at least twelve dictionaries , and his own was among the number . Many of them had notes on them saying that they had been taken by mistake , and begging ( 乞求 ) the loser not to say anything about the matter .

　　　　1 . What is an advertisement ?

　　　　A . A piece of news in the newspaper B . A public notice

　　　　C . An idea D . One's wish

　　　　2 . The student once thought advertising was ______ .

　　　　A . of little use B . of some use C . important D . not important

　　　　3 . His classmate said that he should ______ .

　　　　A . buy a new dictionary B . go on looking for his dictionary

　　　　C . write another and better advertisement D . tell the police

　　　　4 . "If it can't bring your dictionary back , I'll buy you a new one" means that ______ .

　　　　A . he was quite sure he would get the dictionary back

　　　　B . he was not sure he would get the dictionary back

　　　　C . he was rich enough to buy a new dictionary

　　　　D . he didn't know what to do

　　　　5 . Did the classmate know who had taken the dictionary ?

　　　　A . Sure . B . Not very sure . C . Not at all . D . Perhaps .

　　　　答案：Ⅰ . 1 . A 2 . D 3 . C 4 . A 5 . B 6 . A 7 . A 8 . D 9 . D 10 . D 11 . C 12 . B 13 . D 14 . C 15 . D 16 . A 17 . A 18 . C 19 . A 20 . D Ⅱ . 1 . is the size of 2 . with the name 3 . months ago 4 . too heavy , to move 5 . too , anything 6 . much cost 7 . so , than couldn't Ⅲ . 1 . looking 2 . What 3 . afraid 4 . ones 5 . other 6 . over 7 . pair 8 . cost 9 . bit ( little ) 10 . on Ⅳ. 1 . A 2 . D 3 . B 4 . B 5 . A 6 . D 7 . A 8 . D 9 . C 10 . D Ⅴ . A . 1 . b 2 . a 3 . c 4 . c 5 . b B . 1 . F 2 . T 3 . F 4 . T 5 . T C . 1 . B 2 . A 3 . C 4 . A 5 . C