老师：hello boys and girls welcome to my class im miss Yang from Qing 水塘北辰。 Environmental school. Nice to meet you. So today we're going to talk about Unit 10. What does that sign mean? So boys and girls, we'll have an English class. Do you know some classrooms? Today Lin and Mei Ming are talking about some rules for class. Now let's take a look. Ming says we should sit in our seats. When we are having a class, we should sit in your seat. And Linlin says we should raise hands to answer questions. If you want to answer my question, you should raise your hand. And Ming Ming says sometimes we need to work together. And Liming says we should think actively. So boys and girls, these are our classrooms. Sometimes we can use the science to tell rules, right? Yes, read after me, science. But where can we see signs? We can see signs in the park, at school, in the subway, or at cinema and so on. Look, this is a cinema. Read after me. Cinema, cinema, cinema. In the cinema, we can see a film. Today, Linlin and Minming are at the cinema. They see some public signs. And how many signs can they see? Now let's watch the video and tell me how many times do they see?
学生：Bingling and mingming are at the cinema.
学生：No, mingming. The sign means visitors do not go in.
学生：What does that sign mean?
学生：It means you can go out from there.
学生：What does that sign mean?
学生：It means do not use a mobile phone.
老师：Okay. How many signs do they see? Yes, they see 3 signs. And. Do you know what's the meaning of mean? What do the signs mean? Okay, let's look at the first one. What does this Sime? Now let's listen.
学生：Lingling and mingling are at the cinema.
学生：No Mei Ling. The sign means visitors do not go in.
老师：What does this sign mean? It means visitors do not go in. Visitors, do you know?
老师：游客参观者， visitors do not go in。
老师：And what does this sign me? It means visitors do not go in. Yes. Why can't visitors go in? Because this doll is for stuff only. Stuff only. Okay, let's say it again. What does this sign mean? It means visitors do not go in. Now, next one. What does this sign mean? Can Mimi and Lily go out from this store? Now please listen carefully. What does.
学生：That sign mean?
学生：It means you can go out from there.
老师：It means you can go out from there. Look, this is go out and this is go in. It means you can go out from there. Yes. Sometimes we can see this sign. Exit, exit. Now look. What do they see? What does this Sime? Let's listen.
学生：What does that sign mean?
学生：It means do not use a mobile.
老师：Phone. It means do not use a mobile phone. Do not, do not, do you know we often use this sign, do not to express the things that we can't do. For example, do not talk and do not fish. Do not pick flowers. Read after me. Pick, pick pig flowers.
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