老师：Hello everyone, welcome to this online English class. I'm Miss Wen from Liang Xiang High School, affiliated to Beijing Normal University. I'm very happy to be here with you. I hope you can have a good time together and you can learn something meaningful and practical from this class.
老师：Today we are going to focus on writing. We'll learn to write safety guidelines. In this section, we are going to read a passage of Hurricane safety guidelines, which can help us have a better understanding of the purpose, the structure and the language features related to safety guidelines. After reading the passage carefully, you are expected to summarize how to write safety guidelines, including the structure and useful expressions. You are to find out the language features and collect enough tips on flight safety guidelines. The most challenging part is to use what you have Learned in class to write safety guidelines on your own. And after that, I'll give you a little push so that you can revise the articles written by yourself consciously. So please keep the learning objectives in mind. And let's start.
老师：Okay, before the new lesson, let's do some revision first. Have you still remember the topic of Unit 6? Yes, disaster and hope. So can you name some disasters that have been threatening the lives on the earth? Please look at the pictures on the screen and speak out the names of the disasters.
老师：Number one, flat. Number two, volcanic eruption. Number three, drought. Number four, earthquake. Number five, landslide. Number six, Forest Fair. Also, we can call it wildfire. Number seven, storm. Number eight, typhoon. And number nine, Hurricane. Actually, there are many kinds of disasters, and these are only some of them. Have you still remembered Hurricane Korea, which we Learned in the last period? Let's see what you have known about it. Please look at page 68. There is a map and some questions below. Since you have got all the answers to the questions in the last period, I hope you can make a summary and talk about the information you have got from the map. Now, Liu Chang would like to have a try, please. Listen.
学生：We can get a lot of information from the map. On August 23rd, Hurricane Katrina formed on the Atlantic Ocean where there was a tropical depression. It was a tropical storm at the beginning and quickly became a Hurricane. Hurricane Katrina lasted for almost nine days, mainly hitting the southern states including Florida, Louisiana, Alabama and Mississippi. It was one of the costliest natural disasters in the US history, causing USD 108 billion in damage. What was worse, he claimed more than 1000 and 800 lives.
老师：Okay, Liu Chen did a very good job actually, from what she said just now, we know where Hurricane Katrina formed, the path of t
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