UNIT 6 Section Ⅱ Starting out & Understanding ideas—Language points（Word教参）-【优化指导】2023-2024学年新教材高中英语必修第一册（外研版2019）

Section Ⅱ　Starting out & Understanding ideas —Language points [对应学生用书P160] 1 therefore adv.因此，由此 Building the terraces therefore meant that they could increase the areas in which they could grow rice.(教材P62) 因此，建造梯田意味着他们能够扩大水稻的种植面积。 ►情景探究 ①Therefore, the film industry should make greater efforts to attract more viewers. 因此，电影行业应该尽更大的努力去吸引更多的观众。 ②Smoking and alcohol drinking are harmful to one's health a great deal, and therefore should be given up. 吸烟和饮酒极大地损害人的健康，因此应该戒烟酒。 ►要点突破 　therefore/so therefore 副词，正式用语，用于说明事情的结果，可用逗号与后面的句子隔开 so 连词，非正式用语，用于简洁的会话和平时的对话中 ①The new trains have more powerful engines and are therefore faster. 新火车安装了功率更大的引擎，因此车速更快。 ②I was ill so I couldn't come to her party. 我病了，所以没能参加她的聚会。 ►学以致用 [选词填空(therefore/so)] ①I was feeling hungry, so I made myself a sandwich. ②There is still much to discuss.We shall, therefore,_return to this item at our next meeting. ③Progress so far has been very good. Therefore,_we are sure that the project will be completed on time. [一句多译] ④他们的车比较大，所以要更舒适些。 →Their car was bigger and therefore_it_was_more_comfortable． →Their car was bigger, so_it_was_more_comfortable． 2 prevent v．阻挡，防止 The flat terraces catch the rainwater and prevent the soil from being washed away.(教材P63) 平坦的梯田可以收集雨水，防止土壤被冲走。 ►情景探究 ①The accident could have been prevented. 这次事故本来是可以防止的。 ②The farmers protected wheat from heavy rain with rain clothes. 农民们用雨布遮住小麦以防它们被大雨浇坏。 ►要点突破 　① ②keep ...doing sth.让……一直做某事 ③protect ...from/against ...保护……不受……的侵袭/伤害 ①用于主动语态时，prevent ...from doing sth.与stop ...from doing sth.中的from可省略，而keep ...from doing sth.中的from不能省略。 ②在被动语态中，这三个短语中的from都不能省略。 We must prevent/stop the water (from) being polluted. 我们必须阻止水被污染。 In order to keep her from going out, he locked the door. 为了阻止她外出，他把门锁上了。 We were prevented from going home by the heavy rain. 大雨使我们不能回家了。 ►学以致用 [单句填空] ①A possible war was finally prevented