老师：Hello, boys and girls. I'm Miss Zhang. I come from Nanjing Inlong Garden Primary School. Today we are going to learn Unify Science, grammatine and fun time. Boys and girls, remember Tim had an interesting day at the shopping center. Now he is telling mom his experience at the shopping center. Can you help him finish the dialogue now? Let's read. I think.
老师：Okay, time is up. Have you finished? Let's check together. Tim says, mom, I went to a shopping center with Helen and Mike. I Learned a sign, wet floor. It means the floor is wet. So we walked carefully. Then we went to a juice shop and saw the sign, no littering. It means we can't litter here. We wanted to go into the bookshop with juice, but we can't eat or drink there because there's a sign, no eating or drinking on the wall. At lunchtime, we saw a man smoking in the restaurant. I stopped him because there's a sign, no smoking. He shouldn't smoke there. Am I right, mom? Well done, my brave boy. You Learned a lot about science.
老师：Signs are very helpful. We can see signs everywhere in our daily life. Look at these signs. What do they mean? Mom gives him some tasks. Let's have, look. What's this song? Yes, it's no parking. No parking. And what does to me? It means we can't park our car here. Here, park has another meaning. It means we can't put our car here. Do you understand? And do you know what's this? Yes. Danger. Please read after me. Danger. Danger. It means dangerous. Here, this word, it's a little long. Let's read. Then. Russ, Russ. Now, together. Dangerous. Dangerous. And you see the sign? It means we should keep away from it. Okay.
老师：Now, boys and girls, from the dialogue, how do we talk about science now? Let's read more examples. You can open your books and turn to grammatine and pay attention to it. Every sign has its meaning. What can we use now? Let's read and think.
老师：Okay, boys and girls, did you find it? Yes, we can use. What does it mean? What does it mean? What does it mean to ask a science meaning and how to answer it? Yes, we can see. It means. It means the floor is wet. It means you can't eat or drink there. It means you can't smoke here. It means you can't litter here. So they are all the meaning of the signs now, boys. And when we explain the sign we can use, it means plus the meaning of the signs. Do you understand? Now let's look at this part. What are they? Yes, they are the names of science. And what can you find? Let's read and find.
老师：Okay. Did you find no smoking, no littering, no parking, no eating or drinking. They all have no, it means you can't do it. And the verbs all have ing. So we can use no plus do to express the names. Then what else can you find? Look at the pictures, right? They all have this. And what about them? These two signs have
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