新概念第二册自学导读 Lesson80(2)
新概念一直被视为英语学习的经典教材，新概念英语第二册课文对原有教学法进行调整，更利于学生加强交际能力。每课书相对独立，利于同学们自学。为了让同学们能够更加全面完善的学习新概念英语，新东方在线英语组老师将帮助同学们一起总结知识点~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 thisyear.
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 buildmuseums 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。
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 biggestbuildings 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
最后祝同学们学习顺利，取得好成绩。还在等什么，快来新东方在线学习吧~
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