unit 2复习unit 复习2复习.doc

Unit 2 open the floor自由发言 if you have any questions or comments…….. question nvt问题质问，质疑 comment on sth对。。作出评价 make comments on sth 3……about the way vast areas of the world are damaged by chemical waste. the way to do /of doing 做某事的方式 the way在定语从句中做先行词 +in which/that damage 破坏（可修复的） destroy 破坏（不可修复） ruin 腐烂（强调慢慢地） in ruins 废墟 waste nv废物浪费 waste sth doing浪费。。。做某事 the world’s population has grown by six times what it was in 1800. 表达倍数的方式① 倍数 + as + many + 可数名词复数 + as There are seven times as many people as I expected. ② 倍数 + as +much + 不可数名词 + as There is five times as much coffee in this glass as in that one. ③ 倍数 + 形容词 (或副词)的比较级 + than + 其他 The hall is five times bigger than our classroom. ④ 倍数 + the size / height / length / width. etc. + of + 其他 This road is six times the length of that one. ⑤ 倍数+what从句 The production is now three times what it was ten years ago. the figure is now 7 billion people. figure n 身材，体型，数字，人物 v 计算 figure out 计算出，弄清楚 it is our duty to try to cut back on production and reduce the number of things we make and buy it is one’s duty to do 做。。是某人的义务，职责 cut back on 削减 cut down 砍倒 cut off 切断 the number of 。。。 。。。的数目，谓语动词用单数 a number of 许多的，大量的，谓语动词用复数 6.it is clear that you are very concerned about the present situation of our environment. It is clear/obvious that ….. 很显然。。。。 be concerned about /with 担心/ 关心,关注 present n 礼物 v 出席，露面 adv 目前，现在 at present 目前 7．hide from 逃避。。。。。 be bad/good for 对。。。有坏/好处 agree with 同意 in order to=so as to 为了。。。。。 pay for 为。。付款 pay off 还清 pay back 偿还，报答 8.I find many people willing to pay a little higher price for things that are friendly to the environment。 Be willing to do 乐意做。。。。。 9.my aim in life is to save the environment . Aim at / aim to do目的在于。。。。。。旨在做。。。 10.there is no debating that。。。 。。。是无需争辩的 11.what if。。。。 如果。。。会怎样 confident about /that 对。。。自信 as long as 只要。。。 at the same time 与此同时