课文详注 Further notes on the text

　　1. which was built in Hyde Park…

　　这是一个非限定性关系从句，修饰逗号前的 the Crystal Palace。

　　这个从句如果去掉并不影响主句的意思。

　　2.It was one of the biggest buildings of all time…它是有史以来最高大的建筑物之一……

　　of all time表示"有史以来"、"空前的"，常与形容词的最高级连用，表示范围：

　　He is one of the greatest men of all time.　他是有史以来最伟大的人物之一。

　　one of+最高级+复数名词结构的语气比直接用形容词最高级+名词结构要缓和些，不那么绝对。试比较：

　　3.There was also a great deal of machinery on display. 参展的还有很多机器。

　　(1)machinery为"机器"、"机械装置"的总称，是集合名词，要与单数动词搭配。某个具体的机器可用 machine或者 a piece of machinery来表示：

　　This is a wonderful piece of machinery/a wonderful machine.　这是一台奇妙的机器。

　　There is a lot of new machinery/There are many new machines in our factory.　我们厂里有许多新机器。

　　(2)on display与下面一句话中的 on show同义，都表示"陈列着"、"展示着"，在句子中可以作状语、定语或表语等：

　　At the Great Exhibition, a great many goods were on display/show.　世界博览会上展出了大量的商品。(表语)

　　This is the best dress on display/show.　这是展出的最好的衣服。(定语)

　　Shall we put all these flowers on display/show?　我们要把所有这些花都陈列出来吗?(宾语补足语)

　　4. There were six million visitors in all…参观的人数总共是 600 万……

　　in all为固定短语，其含义之一为"总共"、"合计"：

　　I paid him ￡ 200 in all.　我一共付给他200英镑。

　　At the wedding there were over 100 people in all.　参加婚礼的共有一百多人。

　　5. It remained one of the most famous buildings in the world…它　一直是世界上最著名的建筑物之一……

　　remain在这里作系动词，表示"保持不变"、"仍然"(后面可跟形容词、名词、动名词等)：

　　Why did you remain silent/quiet at the dinner party?　你在宴会上为何一言不发?

　　They all remained standing while the manager talked.　经理讲话时他们一直站着。

　　新概念英语第二册第81课重点词汇学习 Word study

　　1.profit

　　(1)n.利润，赢利;得益：

　　Stores haven't made as much profit as usual this year.　今年商店的赢利不如往常多。(不可数名词)

　　The profits from the exhibition were used to build museums and colleges.　博览会的赢利用来建造博物馆和高等学校。(可数名词)

　　(2)vi.获益，得益;获利：

　　I have profited much from your advice/this book/living abroad.　你的建议/这本书/生活在国外使我获益匪浅。

　　2.与on有关的介词短语

　　在课文评注3中我们学习了on display/show。on还可以与其他一些名词组成介词短语，常见的有：

　　(1)on business,因公(与 for pleasure相对)：

　　Last month he went to New York on business and had little time to visit friends.　他上月因公事去纽约，几乎没有时间拜访朋友。

　　(2)on foot,步行(与by bus, by car, by air等相对)：

　　I usually go to work by car, but this morning I went on foot.　我通常开车去上班，但今天上午我是步行去的。

　　(3)on duty,值班，值班的：

　　It was Sunday and there was only one doctor on duty.　那天是星期天，只有一位医生在值班。

　　(4)on the whole,总的看来，总的来说，大体上：

　　On the whole, he is a hard-working student.　总的来说，他是个用功的学生。

　　(5)on fire，起火，着火：

　　Soon the whole building was on fire.　整个大楼很快便都着火了。

　　(6)on purpose，故意地，有意地，特意地(与by chance相对)：

　　They have come here on purpose to see you.　他们特意来看望你。

　　She broke the vase on purpose.　她故意把花瓶打碎。

　　(7)on the average，平均，通常：

　　On the average, he works more than ten hours a day.　他平均每天要工作十多个小时。

　　(8)on any account，无论如何，不管怎么说(通常用于否定句)：

　　Do not interrupt him on any account.　你一定不要打断他(的话)。

　　(9)on second thought(s)，经重新考虑后(thought用单数或复数均可)：

　　I intended to go to the party, but on second thought(s), I decided to stay at home.　我原打算去参加聚会，但经过重新考虑，决定呆在家里。

　　新概念英语第二册第81课课后练习答案 Key to written exercises

　　1.关键句型练习答案

　　A the most extraordinary building of the nineteenth century (1.1); one of the biggest buildings of all time (11.4-5), The most wonderful piece of machinery on show (11.8-9); travelling was not as easy as it is today (1.9); one of the most famous buildings in the world (1.13)

　　2.难点练习答案

　　1 on duty 2 on second thoughts 3 on purpose

　　4 on foot 5 on the whole 6 on any account

　　7 On the average

　　3.多项选择题答案

　　1c 2b 3d 4a 5d 6c

　　7a 8d 9c 10c 11d 12b

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