新概念第四册哪些课文比较重要，也就是需要背诵的？

逆向法学习《新概念4》实录

听写记录还应包括语速. 因为即使同一盘磁带, 不同的播音员朗读速度各不相同, 甚至同一个人在朗读不同的文章语速都很有可能不同. 所以单纯从错误率来判断听力进度是片面的.
下面以我近期错误率最高的与错误率最低的两篇听写记录为例:

逆向法学习《新概念4》实录：
听写记录一:
lesson 25 <<The snake>>.(原文略）
篇幅：353 词。 语速：175词/分 (2'04'')
一.听写: 5遍. 1 小时
听写 错误:
1.语音: their-they are, a-and, analysis, forced-the first, enables it to get-together, its,with very little-low, cat-catch, for instance, fights-fight,tussles-tussle, an assistance-a system, of the, 多one, with-were, of-in, a-the, is from-other snakes to(真离谱!!!) these-this, makers-maker, newer-newl(还会造字!!), be (that)as it may-lead (that) is made(What was I trying to say?!), its business-experience, prey-preys.
2.语法: would-will, manufactured-manufacture, took (place)-to (place)
3.拼写: acquire-aquire
4.生词: vertebrates, concocted, haemolytic.(Why do we have to learn such odd words as "haemolytic"?)
错误统计: 语音40, 语法3,拼写1, 生词3. 共计:47 错误率: 13.31%