新概念英语第2册重点内容Lesson43-45
下载后可任意编辑 新概念英语第2册重点内容Lesson43~45 新概念英语第2册重点内容Lesson43 重要句型或语法 1、can与be able to的用法 本课侧重的是区分can与be able to的用法。can表示“能够或可以”,也可以表示否定猜想,采纳can’t的形式。be able to表示“得以”,往往表示经过努力之后。 2、含有at的介词短语 1)at first,首先 2)at once,立即 3)at home,在家里 4)at present,目前 5)at school,在学校 6)at last,最后 7)at any rate,不管怎么说 8)at heart,本质上 9)at least,至少 10)at times,有时 11)at a loss,不知所措 主要语言点 In 1929, three years after his flight over the North Pole, the American explorer, R. E. Byrd, successfully flew over the South Pole for the first time. 1)three years after his flight over the North Pole用作1929的同位语,补充说明在这一年发生的事情。the North Pole,北极,注意首字母要大写。 2)R. E. Byrd用作explorer的同位语。注意英语里的名字常常可以缩略为大写首字母,右下角加上句点,但姓氏一般不能缩略。 3)successfully,源自succeed,名词为success。 4)the South Pole,南极。 5)for the first time,首次、第一次。 Though, at first, Byrd and his men were able to take a great many photographs of the mountains that lay below, they soon ran into serious trouble. 1)at first,起初、一开始。与后面的soon形成先后顺序的呼应。 2)take photographs,拍照。 3)a great many,许多、大量。只能用来修饰可数名词。 4)mountain,山脉。注意与hill(丘陵)的区别。 5)lie,位于。其过去式和过去分词分别为lay和lain。注意当lie表示撒谎时,其过去式和过去分词都是lied。 6)run into,遇到、陷入。后面一般都接difficulty或trouble等表示问题或麻烦的词语。 7)serious,严重的。 At one point, it seemed certain that their plane would crash. 1)at one point,在某个地方。 2)it seems certain that.,可以作为常用句型来用,表示什么事情似乎肯定会发生。 3)crash,坠毁。 It could only get over the mountains if it rose to 10,000 feet. 1)get over,超越、越过。 2)rise to+高度,表示上升到什么高度。 Byrd at once ordered his men to throw out two heavy food sacks. 1)at once在此提前到ordered前面,既可以起到强调作用,又可以避开放到句末引起歧义,让读者误以为at once是用来修饰throw out的。 2)order sb. to do sth.,命令某人做某事。 3)throw out,扔出去。 4)sack,袋子。一般是指纸袋或塑料袋。 The plane was then able to rise and it cleared the mountains by 400 feet. 1)rise,爬升。 2)clear,越过。相当于fly over。 3)by 400 feet,在山脉上空400英尺处。 Byrd now knew that he would be able to reach the South Pole which was 300 miles away, for there were no more mountains in sight. 1)reach,到达。相当于get to或arrive at。 2)注意本句话中的which引导的是限定性定语从句,用来修饰先行词the South Pole。但是,因为the South Pole具有性,所以只能被非限定性定语从句修饰,所以应该要在Pole后面加上逗号,使得which引导的从句变为非限定性的定语从句。 3)for,因为。它引导的句子是并列句,表原因,只能放在后面,不能位于句首。 4)no more,相当于not.any more。 5)in sight,视线所及。 The aircraft was able to fly over the endless white plains without difficulty. 1)aircraft,飞机。相当于plane。 2)endless,无边无际的、无尽的。源自end,-less是常见的否定后缀。 3)plain,平原。注意与plateau(高原)的区别。 4)without difficulty,毫不费劲地、轻松地。 新概念英语第2册重点内容Lesson44 重要句型或语法 1、动名词 与第20课侧重“动词+动名词”的用法不同的是,本课新增了“介词+动名词”、同一动词后接不定式和动名词、主动表被动的用法。如: Both men started running through the trees. The strap needs mending. I am very keen on cycling. He sat there without saying anything. I must apologize for not letting you know earlier. They continued to run. vs. They continued running. I’d love to sit in the garden. vs. I love sitting in the garden when it’s fine. 2、结果状语从句 本课里出现了so/such.that.引导的结果状语从句,如: Mrs. Sterling got so angry that she ran after them. The men got