外研版Book1Module5Listening&EverydayEnglishPPT.ppt

You will hear a conversation in which a teacher helps a student do an experiment. Read the Aim below and predict the Result.Aim: To find out if there is a change in weight when the metal magnesium burns in air.Result: _.Aim: _ _ _To find out if theres a change in weight when magnesium burns in air. Listen and complete the description of the scientific experiment.Apparatus: _ _Method: _ _ _ _ _ _ _Magnesium, Bunsen burner, a balance, a crucible. First, put the magnesium in the crucible. Then put the crucible on the balance and weigh it. Next, heat the magnesium. Light the Bunsen burner and hole the crucible over it. Finally weigh the magnesium again. Result: _Conclusion: _ _ _It weighs a little more than before.There is a change in weight when magnesium burns in air.1. Where do we go from here? means _. A. What shall we do next? B. Is this the right way?2. Keep the noise down. means_. A. Dont talk B. Talk quietly Choose the correct meaning. 3. Youve got it! means _. A. Youve understood B. You have something 4. Go ahead! means _! A. Go away B. Begin 5. Its your turn means _. A. Youre next B. Turn round Intonation in questionsListen to the intonation of these sentences. The student is asking his teacher questions. Does the voice go up or down at the end?1. How much do we need?2. What about this piece?3. Is this piece OK?4. Where do we go from here?5. Do you want me to write that down?What can you often say about the intonation of (a) Wh- questions and (b) Yes / No questions?Wh- questions often fall at the end.Yes / No questions often rise.Words and expressions of sequenceWell, first, put the magnesium in the crucible. Then put the crucible on the balance and weigh it. Next, I light the Bunsen burner. After that, I hold the crucible over the Bunsen flame. Look at the words in italics. When do we use them?Lastly, we need to weigh the magnesium again.We use them to indicate the stages of a progress.Do the exercises 13-17 on page 95.