1、Unit5 The power of natureLanguage points教案Teaching AimsTo learn some new words and phrases.To learn some complicated sentence patterns.Teaching Important PointHow to help the students to master the usage of some useful words, expressions and sentences.Teaching Difficult PointHow to enable the studen
2、ts to grasp and remember the detailed information of the reading material.Teaching ProcedureStep1 Revision1. Check the answers to Ex. 1 on page 35.2. Check the answers to Ex. 2 on page 36.1The eruption of Mount Vesuvius in 79AD took people in Pompeii by surprise. It was so quick and so severe that t
3、he town was soon covered in _ and _. Many houses in the town were _. It was an _ disaster for many people who could not get away in time. A writer named Pliny, who was there during the _, described how lava was thrown into the air like a _. _ many of the townspeople, _at the _ sight of Vesuvius erup
4、tion, stayed too long and failed to escape in time.2The eruption of Mount Vesuvius in 79AD took people in Pompeii by surprise. It was so quick and so severe that the town was soon covered in _ and _. Many houses in the town were _. It was an _ disaster for many people who could not get away in time.
5、 A writer named Pliny, who was there during the _, described how lava was thrown into the air like a _. _ many of the townspeople, _at the _ sight of Vesuvius eruption, stayed too long and failed to escape in time.Step 2 Language Points1volcano n.pl. volcanoes an active volcano 活火山an extinct volcano
6、 死火山a dormant volcano休眠火山2. Have you ever considered how weak humans are compared with a volcano, hurricane or earthquake? consider大致有两种含义。含义不同，用法有别。知识拓展consider作“考虑”解，常用于以下句型：consider+名词/代词/动名词consider+从句或“疑问词+不定式”。Youd better_. 你最好考虑我的建议。Im _abroad some day.我一直考虑有一天出国。Have you considered_?你们考虑他的建议
7、了吗？We must consider_.我们必须考虑下一步要做什么。consider作“认为”解时，常用于以下句型：consider sb. /sth+ (as) +形容词/名词 其中，as可以省略。consider +sb./sth.+不定式 其中，不定式通常是to be (可以省略) 或其他动词的完成式。consider +it+形容词/名词+不定式短语consider+宾语从句At first they considered me_.起初他们认为我是医生。We consider this matter_.我们认为这件事很重要。We all consider him _the bike.
8、我们都认为他偷了自行车。We_.我们认为学好英语很难。I consider_. 我认为帮助你学习英语是我的职责。We_. 我们这首音乐很值得一听。 3. Sometimes working indoors, Im never bored.bore vt 使(人)厌烦-I am sorry I spoke for so long-I hope I didnt bore you.bored adj. (人) 厌烦的boring adj. （物）令人厌烦的Are you getting bored of doing the same thing everyday?The movie was so b
9、oring that I fell asleep The life is more and more boring, so many people become more and more bored.生活越来越无聊,所以很多人也变得越来越无聊 4. Many houses have been covered with lava or burnt to the ground. burn to the ground (楼房等)完全烧毁他无处栖身因为他的房子被烧掉了.He has no place to live in because his house has been burnt to the
10、 ground. 知识拓展burn up 烧完; 烧尽; 烧光;烧旺起来 burn down烧成平地(烧毁,烧光)burn off烧掉burn out烧掉5. She made an effort to be nice to her boss.effort n. 努力; 力气; 努力的成果make an effort to do sth 努力做某事：It took a lot effort to lift the boxes. 抬起那些箱子要花很大的力气。Despite all our efforts we still lost the game.尽管我们尽了全力，我们还是输掉了比赛。Put
11、more effort into your work.你要更加努力地工作。Your success lies upon your effort.你成功与否取决于你的努力。He made an effort to arrive on time他尽量准时到达。6. Having collected and evaluated the information, I help other scientists to predict where lava from the volcano will flow next and how fast it will flow.本句为ing形式的完成式作状语。如
12、果分词表示的动作在谓语动词表示的动作之前发生，该分词用完成式。 例如： Not having met the man before, I couldnt recognize him at first. Having finished my homework, I went to play football. _ the programme, they have to stay there for another two weeks. A.Not completing B. Not completed C. Not having completed D. Having not completed