Lesson 61 Trouble with the Hubble 课文详解+重点词汇学案-2022-2023学年新概念第二册

Lesson 61 文本  Trouble with the Hubble In future, astronauts will be required to descend from a spaceship while it is still in space and to return to it. The ability to do this will be necessary in future flights to distant planets. Scientists are now trying to discover if this is possible. The spaceship Astra which left the earth a short time ago, will be travelling three hundred miles into space. At a certain point, the Astra will stop for a short time and an astronaut will attempt to leave the stationary spaceship and then return to it. We shall not know whether the experiment has been successful until we have received a radio message. The first message is expected to arrive at 7 o'clock this evening. By that time, the Astra will have been flying through space for seventeen hours and will have circled the earth a great many times. When the first radio messages have been received, the results of the trip will be announced immediately. 文本解析 一）词汇学习Word study 1. cost(n.), price(n.)与value(n.) cost和price都可以表示“价格”、“价钱”，但price侧重于指某个具体东西或商品的价钱，cost侧重指某项服务、工程等的费用： What's the price of the dress, please?请问这件衣服多少钱？（询问价钱时，price与what连用，不用 how much）They built the bridge at a cost of over ￡600,000.他们造这座桥的费用是六十多万英镑。 cost的复数表示“成本”： I don't know the costs of these cars.我不知道这些车的成本是多少。price的复数表示“物价”：Prices are going up again.物价又上涨了。 value可以表示抽象的价值或重要性： This book is of great value to me.这本书对我来说很有价值/重要。This newspaper has little value.这份报纸没什么价值。 value的复数形式表示“价值观”： His values are different from those of mine.他的价值观与我的不一样。 2. cost(v.), price(v.)与value(v.) cost为及物动词，表示“价钱为”、“（使）花费”（不用于被动语态）： The new car cost him ￡5,000.那辆新车花了他5,000英镑。How much did it cost to launch the Hubble telescope into space?将哈勃望远镜发射升空花费了多少钱？ price作动词用时在口语中表示“问……的价钱”、“查明/查询……的价格”： They priced cars for two days before they bought one.他们在询问了两天车价后才买了一辆车。 price还可以表示“给……定价/标价”： The dress is priced at ￡50, but you can have it at ￡40.这件衣服标价为50英镑，不过你可以花40英镑买下它。value作及物动词时可以表示“尊重”、“重视”等：If you don't value my advice, I'll speak n