Unit3 Lost civilizationsStep 1 Question1. What happened to Pompeii in August AD 79?2. How was the buried city discovered?3. What were the stepping stones along the road in Pompeii used for?4. Why was Loulan an important city about 2,000 years ago?5. How do many people think Loulan disappeared?Step 2 DiscussionMake students discuss the topic: What would you like to show to the aliens about our human civilizations if they came to our earth? Why?Step 3 首字母填空完成句子。1. The time bomb e _xploded______, but fortunately nobody was injured.2. Mount Vesuvius hasn’t e__ rupted ______ for many years.3. The earthquake left the whole town in r_ uins ________.4. They d_ ecorated _______ the room with flowers and balloons.5. It is generally accepted that the Chinese c_ivilization______ is one of the oldest in the world.Step 4 Language pointsDay 1,15July1、 to have done 是动词不定式的完成时态形式，此时表示该动作在主句谓语动作之前发生eg. ① 他干了这样一件事真是荒唐。It is crazy of him to have done such a thing.② 你碰到过这么多的著名的科学家，真是太幸运了。You are lucky to have met so many famous scientists.2、 句中谓语动词使用进行时态，而时间状语 tomorrow 表示将来。这是因为在英语表达中描述已经安排好的，按计划将要发生的事情时，常可使用现在进行时态表示将来。eg. ① 谁将挨着我我坐？Who is sitting next to me?② 你今晚干什么？What are you doing tonight?表 示 位 置 移 动 的 动 词 ， 可 用 进 行 时 态 表 示 将 来 。 如 ：go,come,fly,leave,arrive,move,send 等eg. ① 台风就要来了。A typhoon is coming.② 我们要搬到香港去了。W e are moving to HongKong. 3、 be known as 作为…而出名，被称为，大家公认，叫作，介词 as 后面接名称、身份等内容的词eg.海南岛被誉为“东方夏威夷”。Hainan Island is known as the Eastern Hawaii.辨析：be known for 因…而出名、著称 介词 for 后...
