Unit 2 Lesson 4 Class Projects（第二课时）教学设计--2023-2024学年八年级英语北师大版上册册

Unit 2 Lesson 4 Class Projects(第二课时) Lesson Focus • Materials and objects for class projects • Modal verbs can, must, have to • Talking about school rules Grammar: Modal verbs can, must, have to Exercise 4 Purpose: to help students complete school rules with can / can't or have to / don't have to · Direct students to the reading. Say“Read the school rules for Project a”. Elicit the rules and write them, or parts of them, on the board: You (can) use wood. You (mustn't) use other things. You (don't have to) paint the model. You (must) describe your building. It (doesn't have to) be long. Ask“What are the verbs in each rule?”Elicit or provide use, use, paint, describe, be, and underline each as shown here. Circle the modal verbs. Explain that the underlined verb in each rule is the action of the sentence. The circled verb is the modal verb, or“helping verb”. Helping verbs express time and mood. Point out that with helping verbs, we use the base form, not the infinitive. For example, I don't like tea. He didn't go. We will study harder. It has to fly for ten seconds. (NOTE: has to is the modal, not has. ) · Ask students to think of other helping verbs, for example, do and don't, Explain that the helping verb do / does indicates a question or short answer in the present tense. Don't / doesn't indicates a negative. Did / didn't indicates the past tense, etc. Provide or elicit examples if necessary. Explain that modal verbs are a special kind of helping verb. A modal verb that students are already familiar with is will, which is used to express the future, as in We will finish at 5: 00. Point out that modal verbs, like other helping verbs, are also used with the base form of the action verb.Point out that the third-person form doesn't change. Compare: I don't swim and he doesn't swim. BUT I can't go and he can't go. · Explain that the modal verb can is used to express something you are or aren't allowed to do. (You can use paper and glue but you can't use metal.) Explain