1、Unit FourSentence StudyuIf you want to spark a heated debate at a dinner party, bring up the topic of genetically modified foods.（Para.1）If you want to cause an intense debate at a dinner party, introduce the topic of genetically modified foods into discussion.如果你想在某次晚宴上引發一場激烈爭論，那就提起轉如果你想在某次晚宴上引發一場激

2、烈爭論，那就提起轉基因食品的話題吧?；蚴称返脑掝}吧。 uParticularly in countries with long agrarian traditions, the idea seems against nature. （Para.1）Especially in the countries which have long traditions in agriculture, the idea of genetically modified food seems to violate the law of nature.Note that “with long agrarian t

3、raditions” is used as a post-modifier to modify “countries”e.g. China is an ancient civilization with long history.特別是在農業傳統悠久的國家，這一理念似乎有悖自然。特別是在農業傳統悠久的國家，這一理念似乎有悖自然。u genetically modified foods must be subjected to rigorous testing. （Para.3） genetically modified foods must undergo strict examination

4、.轉基因食品必須經過嚴格的檢驗。轉基因食品必須經過嚴格的檢驗。uIn wealthy countries, the debate about biotech is tempered by the fact that we have a rich array of foods to choose fromand a supply that far exceeds our needs. （Para.3）In rich countries where there is a rich choice of foods and the supply goes far beyond what is nece

5、ssary, the debate about biotechnology is moderated or softened.在富裕的國家里，關于生物技術的爭論相對緩和是由于在富裕的國家里，關于生物技術的爭論相對緩和是由于有大量豐富的食品可供選擇，而且供應遠遠超過需求。有大量豐富的食品可供選擇，而且供應遠遠超過需求。Note: In this sentence there are two “that” clauses. The first one is an appositive clause, while the second one is an attributive clause.uIn

6、 developing countries desperate to feed fast-growing and underfed populations, the issue is simpler and much more urgent. （Para.3）In developing countries extremely eager to feed their people who are increasing rapidly and who have had too little food, the problem is simpler and much more pressing.而在

7、發展中國家，其迅速增長又吃不飽的人口迫切需要而在發展中國家，其迅速增長又吃不飽的人口迫切需要養活，問題就更為簡單，也更加緊迫。養活，問題就更為簡單，也更加緊迫。uDo the benefits of biotech outweigh the risk? （Para.3）Are the advantages of biotech greater than the risks?生物技術的好處是否大于風險呢生物技術的好處是否大于風險呢? ?u which means their babies are exposed to various birth defects. （Para.5） which m

8、eans that their babies may suffer from various inborn defects.這意味著她們的嬰兒可能會患有各種先天缺陷。這意味著她們的嬰兒可能會患有各種先天缺陷。u which the body converts into vitamin A. （Para.6） the body can change beta-carotene into vitamin A.人體可將人體可將胡蘿卜素轉化為維生素胡蘿卜素轉化為維生素A。u food shortages are caused by crop damage attributed to pests, dr

9、ought, poor soil and crop viruses. （Para.6） food shortages result from loss of crops as a result of pests, drought, poor soil and crop viruses.因蟲害、干旱、土壤貧瘠和作物病毒而作物減產以因蟲害、干旱、土壤貧瘠和作物病毒而作物減產以致食物匱乏。致食物匱乏。Note: in the sentence “attributed” is a past participle used to modify “crop damage”, and the structu

10、re can be changed into “ crop damage that is attributed to pests, drought, ”.uYet for all that promise, biotech is far from being the whole answer. （Para.8）Though biotechnology could raise total crop productivity, it is not the sole solution to the whole problem.盡管生物技術具有如此的潛力，但卻遠遠不能解決所有盡管生物技術具有如此的潛力

11、，但卻遠遠不能解決所有問題。問題。u more than 1 billion people around the globe live on less than $1 a day. （Para.8） in the world over 1 billion people have less than $1 a day for living.全世界有超過全世界有超過10億人口每天靠不到億人口每天靠不到1美元維持生計。美元維持生計。uBiotech is not a panacea, but it does promise to transform agriculture in many developing countries. （Para.9）Biotechnology is not a solution to all the problems, but it really is expected to change agriculture in many developing countries.生