Unit 13 We're trying to save the earth! Section A Grammar-4c 课件 2023-2024学年人教版英语九年级全册

Grammar Focus-4c Unit 13 We’re trying to save the earth! 1 AIMS Review the use of Present progressive,used to, Passive voice, Present perfect and Modal verbs. 01 Master them by doing some exercises. 02 Summarize the tense knowledge we have learned. 03 2 Revision Translate the following phrases into English. 1.听说 2.切除 3.不再 4.不但...而且... 5.在过去的20-30年里 6.对...有害 7.在...的顶部 8.比如 9.对...有益 10.到目前为止 11.事实上 12.处在危险中 hear of cut off no more not only...but also... in the last 20 to 30 years be harmful to at the top of such as be good for so far in fact be in danger 3 Presentation Grammar Focus We’re trying to save the earth. Present progressive The river used to be so clean. used to The air is badly polluted. Passive voice No scientific studies have shown that shark fins are good for health. Present perfect We should help save the sharks. Modal verbs 4 Grammar 现在进行时 Present progressive 定义 结构 标志词 例句 表示说话时(瞬间)正在进行的动作, 也表示目前或现阶段正在进行的动作,或说话者的强烈情感。 be (am/is/are) + v.-ing形式 look, listen, now, right now… e.g. Listen! The boy is singing. It’s always raining here. (抱怨情绪) 5 Exercise 用括号内所给动词的适当形式填空。 1.Listen! The phone _(ring). Please go to answer it. 2.— Alan, it’s late. Why not go to bed? — Jenny hasn’t come back yet. I _(wait) for her. 3. — What’s your father doing now? — He _ (write) a letter in the study. is ringing am waiting is writing 6 Grammar 现在完成时 Present perfect 定义 结构 标志词 固定搭配 表示动作已经完成, 但对现在造成影响 has/have + 过去分词 already, yet, ever, never, just, before, once, twice, recently, so far, for+时间, since+时间点/从句。 have been to 去过某地, 说话时已从该地回来。 have gone to 去了某地, 说话时尚未返回。 have been in 已在某地, 与一段时间连用。 7 Exercise Complete the following sentences. I _ (be) in Beijing for two years. 2. I _ never _ (hear) of that man before. 3. Tom _ (work) there since two years ago. 4. The twins _ (wash) the clothes for an hour. 5. He _ (play) basketball since three years ago. 6. How long _ Sally _ (sing) yet? have been have heard has worked have washed has played has sung 8 Exercise Fill in the blanks with