内容正文:
Section Ⅲ Using language
学习任务目标
1. 通过观察,发现和理解it作形式宾语的用法,并学会在真实语境中进行运用;
2. 掌握并能自主运用本课时的重要语言点;
3. 学习并运用有关食物链的表达,了解生态系统中各食物链中不同物种之间的关系,认识到保护食物链平衡的重要性,为保护生态系统做贡献;
4. 通过完成听力活动,进一步了解生态系统平衡的重要性,并能够运用所学表达自己的观点,同时还能学会表达质疑和回应别人的质疑。
Ⅰ. 根据语境写出句中黑体单词的汉语意思
1. Heat the sugar slightly first to make it dissolve quicker. (使)溶解
2. Nutrients are substances that help plants and animals to grow. 养分
Ⅱ. 拓展词汇知变形
1. impossible adj. 不可能的→possible adj. 可能的→possibility n. 可能性→impossibility n. 不可能
2. investigate v. 调查;研究→investigation n. 调查;研究→investigator n. 研究者;调查者
3. transform v. 改变;转换→transformation n. [遗]转化;转变,改观→transformative adj. 变化的,变形的→transformer n. [电]变压器;使变化的人
4. chemical n. 化学制品;化学品adj. 化学的→chemistry n. 化学;化学过程→chemist n. 化学家;药剂师
5. producer n. 制作人,制片人;生产者→produce v. 生产;引起→productive adj. 生产的,多产的→production n. 成果;产品;生产
Ⅲ. 补全短语
1. feed on 以……为食
2. refer to 指的是
3. due to 由于;因为
4. rely on 依靠,依赖
5. break down 分解
6. take in 吸收
7. be responsible for 对……负责;是……的原因
Ⅳ. 重点句式补全
1. 句型公式:it作形式宾语
Experts felt it necessary to come up with a plan to remove all the rabbits from the island.
专家认为,想出一个将所有的兔子从岛上清除的计划是有必要的。
2. 句型公式:due to+名词
Due to its cute appearance , many people think keeping this turtle as a pet is a good idea.
由于它可爱的外表,许多人认为养这种乌龟做宠物是个好主意。
3. 句型公式:as well as
Secondary consumers prey on primary consumers, as well as eating other animal matter.
次级消费者捕食初级消费者,也吃其他动物的残留物质。
it作形式宾语
①No visitor would think it surprising that the island is a UNESCO World Heritage Site.
②Experts felt it necessary to come up with a plan to remove all the rabbits from the island.
③This incident made it clear that the rat, mouse and rabbit problem needed solving once and for all.
④I think it a breakthrough to transform a desert into a forest...
it常可代替不定式,如句子②④ (填序号);it可代替动名词或从句,如句子①③ (填序号),在句中作形式 宾语,而将真正的宾语放在句子后面。
1. refer to 参考;查阅;指的是;提及
(教材原文)What does “it”refer to in sentences (a) and (c)?
句(a)和句(c)中的“it”指的是什么?
【读句探究】
When I am faced with a difficulty, I usually choose to refer to web pages.
当我遇到困难