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Unit 6 When was it invented? Key phrases: 1. 偶然;意外地_ 3. 毫无疑问;的确_ 5. 最后;终于_ 7. 钦佩;仰慕_ 9. 发生;出现_ 11. 错误地;无意中_ 12. 梦见_ 13. 想出_ 2. 少于_ 4. 与……类似_ 6. 同时_ 8. 落入;掉入_ 10. 突然;猛地_ 12. 把……分开_ 14. 实现某人的梦想_ 16. 阻止……干……_ Discriminate and analyse: be used as & be used for & be used by _ _ _ _ _ _ _ Practice 一,写出下列动词的过去式和过去分词 1. begin _ 2. take _ 3.go _ 4.have _ 5. make _ 6. buy _ 7. bring _ 8. teach _ 9. give _ 10. leave _ 11. run _ 12. see _ 13.eat _ 14. prefer _ 15. study _ 16. paly _ 17. plan _ 18. write _ 19. hear _ 20. build _ 21. sit _ 22. get _ 23. know _ 24. choose _ 25. come _ 26. sleep _ 27. keep _ 28. say _ 二,单项选择题 1. A new bridge will _ across the river. A. be building B. be built C. build 2. Some people think trees _on Tree Planting Day only. A. should be planted B. should plant C. should be planting D. be planted 3. Personal computers _in 1976. It has changed the whole world. A. have been invented B. are invented C. were invented D. invented 4. The mobile phone has influenced people's life a lot since it_. A. invents B. invented C. is invented D. was invented 5. Many people do not realize the importance of health_ they have fallen ill. A. until B. while C. when D. after 6. —Dad, why must I stop_ computer games? —For your health, my boy. A. play B. to play C. to playing D. playing 7. Flowers_ along the road last year. A. plant B. planted C. are planted D. were planted 8. - Who designed this game? - It_ by Tom in 1999. A. is designed B. designs C. was designed D. designed 9. - Do you know Earth Day? - Sure. It_ in 1970 to tell us to protect our planet. A. sets up B. set up C. is set up D. was set up 10. Lots of food and water _to Ya'an, Sichuan Province immediately after the earthquake happened. A. were sent B. are sent C. send D. sent 11. - You bought a new car! An American car? - No. A Chinese car. It_ in Taizhou. A. makes B. made C. was made D. will be made 12. The Chinese writer has got lots of fans in France. His new book _into French as soon as it came out. A. was translated B. translated C. is translated D. translates 13. —Have you heard about that car accident near the school? —Yes, luckily no one_. A. hurt B. was hurt C. has hurt D. were hurt 14. It_ last week that the haze (雾霾) in Beijing caused many problems. A. reports B. reported C. is reported D. was reported 15. The kind of cup is used _ drinking. A. to B. as C. by D. for 16. My mother and my sister kept on talking, but my father _ silent all the time. A. got B. kept C. turned D. looked 17. The number of the students in our school_1,600 and a number of them _ from Canada. A. are; come B. is; come C. is; comes D. are; comes 18. I think the mountains _ with trees in a few years’ time. A. are covered B. will be covered C. are covering D. will cover 19. They should _n to choose their own clothes. A. allowed B. be allowed C. allow D. are allowed 20.Pens are used for on paper. A. write B. writing C. to write D. wrote 21. It was invented Edison A. by B. in C. for D. to 22. This watch China. A. was made in B. was made by C. was made from D. was made of 23. - was the car invented? -It was invented in 1983. A. When B. Why C. How D. Who 24. it rained yesterday, I still went on a trip. A. Although B. But C. Because D. And 25. My mother told me that my homework must on time. A. finish B. be finish C. be finshed D. finished 三,句型转换 1. She was seen to come out of the library by him.(改为主动语态) He_ out of the library. 2. When are trees often planted?(改为主动语态) When _ people often plant _? 3. Did the students wear the school clothes a lot? (改为被动语态) _ the school clothes _ a lot by the students? 4. Our swimming pool was built in 2008 .(就划线部分提问) _ _ our swimming pool built? 5. When are the flowers often watered by you? (改为主动语态) When _ _ often _ the flowers? 6. We must take good care of the books.(改为被动语态) The books must _ _ good care of. 7. We saw Mr. Chen walk into the teaching building.(改为被动语态) _ 8. They were invented last year .(就划线部分提问) _ 9. were, they, by, invented, Julie Thompson. (连词成句) _ 10. news, told, was, good, she, as soon as, the, arrived, she.(连词成句) _ 以下是对上述练习题的详细解析: **一、重点短语** 这些短语是本单元重要的语言知识,需牢记其含义和用法: 1. **by accident**:通常作状语,指偶然地、意外地发生某件事情,例如:I met an old friend in the street by accident.(我偶然在街上遇到了一位老朋友。) 2. **less than**:用于比较数量、程度等,意为“少于、不到”,如:There are less than ten students in the classroom.(教室里不到十个学生。) 3. **without doubt**:作状语,强调对某事毫无疑问、的确如此,例如:He is without doubt the best player on the team.(他无疑是队里最优秀的球员。) 4. **be similar to**:表示“与……类似、和……相似”,用于描述两者之间的相似性,如:My opinion is similar to yours.(我的意见和你的相似。) 5. **in the end**:意思是“最后、终于”,可用于叙述事情的发展结果,例如:In the end, they found the lost child.(最后,他们找到了那个丢失的孩子。) 6. **at the same time**:作时间状语,意为“同时”,例如:He can play the piano and sing at the same time.(他能同时弹钢琴和唱歌。) 7. **look up to**:是及物动词短语,意为“钦佩、仰慕”,后接人作宾语,如:We all look up to our teacher.(我们都很钦佩我们的老师。) 8. **fall into**:表示“落入、掉入”,也可引申为“陷入(某种状态)”,例如:The leaf fell into the water.(树叶掉进了水里。);He fell into a deep sleep.(他陷入了沉睡。) 9. **take place**:表示“发生、出现”,通常指有计划、有安排地发生,例如:The meeting will take place next week.(会议将在下周举行。) 10. **all of a sudden**:作状语,意为“突然、猛地”,相当于 suddenly,例如:All of a sudden, it began to rain.(突然,天开始下雨了。) 11. **by mistake**:表示“错误地、无意中”,例如:I took his umbrella by mistake.(我错拿了他的伞。) 12. **dream of**:后接名词、代词或动名词,意为“梦见、梦想”,例如:I dream of becoming a famous singer.(我梦想成为一名著名的歌手。) 13. **come up with**:是及物动词短语,意为“想出、提出(主意、计划等)”,例如:He came up with a good idea.(他想出了一个好主意。) 12. **divide...into...**:表示“把……分开、把……分成……”,例如:Divide the cake into four pieces.(把蛋糕分成四份。) 14. **achieve one's dream**:意为“实现某人的梦想”,例如:He worked hard and finally achieved his dream.(他努力工作,最终实现了自己的梦想。) 16. **prevent...from doing...**:表示“阻止……干……”,例如:We should prevent the children from playing with fire.(我们应该阻止孩子们玩火。) **二、短语辨析** 1. **be used as**:强调被当作某种特定的用途或角色来使用,“as”后面接名词表示具体的用途或身份。例如:The box is used as a table.(这个箱子被当作桌子使用。) 2. **be used for**:侧重于表示某物的用途是做某事,“for”后面接名词或动名词。例如:This tool is used for cutting wood.(这个工具是用来砍木头的。) 3. **be used by**:重点突出使用者,“by”后面接人或组织等表示动作的执行者。例如:The bike is used by my brother every day.(这辆自行车每天被我哥哥使用。) **三、动词的过去式和过去分词** 这些动词的变化形式是英语时态学习中的基础内容,需要牢记。 1. 一般情况下,在动词原形后直接加 -ed 构成过去式和过去分词,如:play - played - played;study - studied - studied。 2. 以不发音的 e 结尾的动词,直接加 -d,如:hope - hoped - hoped。 3. 重读闭音节结尾,且末尾只有一个辅音字母的动词,先双写该辅音字母,再加 -ed,如:plan - planned - planned;stop - stopped - stopped。 4. 以辅音字母 + y 结尾的动词,变 y 为 i,再加 -ed,如:carry - carried - carried。 5. 不规则动词的变化没有固定规律,需要特殊记忆,如:begin - began - begun;go - went - gone;have - had - had 等。 **四、单项选择题** 1. **B**:句子主语“A new bridge”与动词“build”之间是被动关系,即桥是被建造的。“will”是一般将来时的助动词,一般将来时的被动语态结构为“will be + 过去分词”,所以这里应选“be built”。 2. **A**:“trees”(树)和“plant”(种植)之间是被动关系,树是被种植的。“should”是情态动词,情态动词的被动语态结构是“should be + 过去分词”,所以“should be planted”符合语法规则。 3. **C**:根据时间状语“in 1976”可知,句子时态为一般过去时。“Personal computers”(个人电脑)和“invent”(发明)之间是被动关系,一般过去时的被动语态结构是“was/were + 过去分词”,主语“Personal computers”是复数,所以用“were invented”。 4. **D**:“the mobile phone”(手机)和“invent”(发明)之间是被动关系,手机是被发明的。“since”引导时间状语从句时,从句常用一般过去时,所以这里用一般过去时的被动语态“was invented”。 5. **A**:“not...until...”是固定搭配,意为“直到……才……”。这句话的意思是“许多人直到生病了才意识到健康的重要性”,符合语境。“while”表示“当……时候”,强调同时进行;“when”也表示“当……时候”;“after”表示“在……之后”,均不符合题意。 6. **D**:“stop doing sth.”表示停止正在做的事情,“stop to do sth.”表示停下来去做另一件事。根据“为了你的健康,孩子”可知,这里是说要停止玩电脑游戏,所以用“stop playing”。 7. **D**:根据时间状语“last year”可知,句子时态为一般过去时。“Flowers”(花)和“plant”(种植)之间是被动关系,一般过去时的被动语态结构是“was/were + 过去分词”,主语“Flowers”是复数,所以用“were planted”。 8. **C**:根据“in 1999”可知,句子时态为一般过去时。“It”(指代游戏)和“design”(设计)之间是被动关系,一般过去时的被动语态结构是“was/were + 过去分词”,主语“it”是第三人称单数,所以用“was designed”。 9. **D**:根据“in 1970”可知,句子时态为一般过去时。“It”(指代地球日)和“set up”(设立)之间是被动关系,一般过去时的被动语态结构是“was/were + 过去分词”,主语“it”是第三人称单数,所以用“was set up”。 10. **A**:根据“after the earthquake happened”可知,句子时态为一般过去时。“Lots of food and water”(大量的食物和水)和“send”(发送)之间是被动关系,一般过去时的被动语态结构是“was/were + 过去分词”,主语“Lots of food and water”是复数,所以用“were sent”。 11. **C**:“It”(指代车)和“make”(制造)之间是被动关系,根据语境可知是在说车的制造情况,用一般过去时,一般过去时的被动语态结构是“was/were + 过去分词”,主语“it”是第三人称单数,所以用“was made”。 12. **A**:根据“as soon as it came out”可知,句子时态为一般过去时。“His new book”(他的新书)和“translate”(翻译)之间是被动关系,一般过去时的被动语态结构是“was/were + 过去分词”,主语“His new book”是第三人称单数,所以用“was translated”。 13. **B**:“no one”(没有人)和“hurt”(伤害)之间是被动关系,“no one”作主语时,谓语动词用单数,根据语境用一般过去时,一般过去时的被动语态结构是“was/were + 过去分词”,所以用“was hurt”。 14. **D**:“It is/was reported that...”是固定句型,意为“据报道……”。根据“last week”可知,句子时态为一般过去时,所以用“was reported”。 15. **D**:“be used for doing sth.”是固定搭配,表示“被用于做某事”,这里表示杯子被用于喝水,所以选“for”。 16. **B**:“keep silent”是固定短语,意为“保持沉默”。根据“kept on talking”可知,句子时态为一般过去时,所以这里用“kept”。 17. **B**:“the number of + 复数名词”表示“……的数量”,作主语时谓语动词用单数;“a number of + 复数名词”表示“许多……”,作主语时谓语动词用复数。第一个空“the number of the students”(学生的数量)作主语,谓语动词用“is”;第二个空“a number of them”(他们中的许多人)作主语,谓语动词用“come”。 18. **B**:根据“in a few years’ time”(几年后)可知,句子时态为一般将来时。“the mountains”(山)和“cover”(覆盖)之间是被动关系,一般将来时的被动语态结构是“will be + 过去分词”,所以用“will be covered”。 19. **B**:“They”(他们)和“allow”(允许)之间是被动关系,“should”是情态动词,情态动词的被动语态结构是“should be + 过去分词”,所以这里用“be allowed”。 20. **B**:“be used for doing sth.”是固定搭配,表示“被用于做某事”,这里表示钢笔被用于写字,所以用“writing”。 21. **A**:“be invented by sb.”是固定短语,意为“被某人发明”,这里表示它是被爱迪生发明的,所以用“by”。 22. **A**:“be made in + 地点”表示“在某地制造”;“be made by sb.”表示“由某人制造”;“be made from”表示“由……制成(看不出原材料)”;“be made of”表示“由……制成(能看出原材料)”。这里表示手表是在中国制造的,所以用“was made in”。 23. **A**:根据答语“It was invented in 1983.”可知,问的是汽车发明的时间,所以用“when”提问。 24. **A**:“Although”表示“尽管”,引导让步状语从句,“But”表示转折,“Because”表示原因,“And”表示并列。这句话的意思是“尽管昨天下雨了,我仍然去旅行了”,所以用“Although”。 25. **C**:“my homework”(我的作业)和“finish”(完成)之间是被动关系,“must”是情态动词,情态动词的被动语态结构是“must be + 过去分词”,所以这里用“be finished”。 **五、句型转换** 1. 主动语态中感官动词 see 后接不带 to 的不定式作宾语补足语,即 see sb. do sth.,但变为被动语态时,要把省略的 to 还原,所以“He saw her come out of the library.”。 2. 原句是一般现在时的被动语态,变为主动语态时,根据主语“people”和一般现在时的特殊疑问句结构“特殊疑问词 + do/does + 主语 + 动词原形 + 其他”,这里主语是复数,用“do”,所以是“When do people often plant trees?”。 3. 原句是一般过去时的一般疑问句,变为被动语态时,先把原句中的宾语“the school clothes”提前作主语,原句中的助动词“did”去掉,根据一般过去时的被动语态的一般疑问句结构“Were/Was + 主语 + 过去分词 + 其他”,主语是复数,所以是“Were the school clothes worn a lot by the students?”。 4. 对“in 2008”(时间)提问,用特殊疑问词“when”,然后把原句变为一般疑问句,将 was 提前,所以是“When was our swimming pool built?”。 5. 原句是一般现在时的被动语态的特殊疑问句,变为主动语态时,根据一般现在时的特殊疑问句结构“特殊疑问词 + do/does + 主语 + 动词原形 + 其他”,这里主语是 you,用“do”,所以是“When do you often water the flowers?”。 6. 原句是含有情态动词“must”的主动语态,变为被动语态时,根据情态动词的被动语态结构“情态动词 + be + 过去分词”,所以是“The books must be taken good care of.”。 7. 主动语态中感官动词 see 后接不带 to 的不定式作宾语补足语,即 see sb. do sth.,但变为被动语态时,要把省略的 to 还原,所以“Mr. Chen was seen to walk into the teaching building by us.”。 8. 对“last year”(时间)提问,用特殊疑问词“when”,然后把原句变为一般疑问句,将 were 提前,所以是“When were they invented?”。 9. 根据所给单词和被动语态的结构“be + 过去分词 + by sb.”,可以连成“They were invented by Julie Thompson.”。 10. 根据“as soon as”(一……就……)引导时间状语从句的结构和所给单词,可以连成“She was told the good news as soon as she arrived.”。 学科网(北京)股份有限公司 $$