老师：Hello everyone. Today we are going to learn Book 2, Unit 1, reading 2, behind the themes. By the end of this period, I hope we can revise the main contents of the speech, understand the difficult sentences, use the useful words and expressions in the speech, and analyze the structure and make a similar speech. So first of all, we will revise what we have Learned, and we are going to listen to the recording. And you can go through this passage, try to find out the answers to the two questions on the screen. First one, who gives the lecture at the film festival? Matu. What is the lecture mainly about according to the topic, sentences. So please listen carefully and then find out the answers.
学生：Unit 1, Lights, Camera, Action. Pages 2 to 3, reading behind the scenes. Hello, everyone. Let me start by asking you a question. What's the first thing you notice about a film? The acting, the music, maybe the amazing sets? Whatever your answer is, there's always a lot more to it than first meets the eye. Actually, the film you see on the screen is the product of a huge amount of hard work, most of which takes place behind the scenes.
学生：Today, I'll give you a brief introduction to some aspects of filmmaking you might not be familiar with. To begin with, I'd like to draw your attention to an important factor of a film, sound effects. These are often added after a scene has been shot and might not be made in the way you would expect. For example, in Jurassic Park, the sounds of different animals, including a baby elephant and a tiger, were mixed by a computer to make a Dinosaur raw. The sound of the doors opening in the Star Trek films was made simply by pulling a sheet of paper out of an envelope.
学生：Another aspect I attach great importance to is visual special effects. CGI has been frequently used in filmmaking as a special effects technology. Generally, scenes requiring CGI are filmed in front of a green screen in the studio. As green doesn't match any natural hair or skin color, actors can be easily separated from the background. This enables CGI effects to be added later. The Quidditch scenes in the Harry Potter films were made in this way, with the actors jumping up and down in front of a green screen. However, the aid of computers isn't always preferred.
学生：Peter Jackson, director of the Lord of the rings films, took a creative approach. He used clever camera angles to make characters seem bigger or smaller than they really were. Props also contribute to a film success. To make a film look real, great effort must sometimes be made to research, find and build objects.
学生：Director James Cameron spent six months looking at and revising plans of the Titanic in order to build a full sized model for his 1997 film. He talked to historians to ensur
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