(
课件网) Unit 8 Have you read Treasure Island yet Section A (Grammar focus-4c) 知识目标: 掌握重点单词及句型 能力目标: 1.掌握现在完成时的用法。 2.掌握already和yet在现在完成时中的用法区别。 3.能正确运用现在完成时来描述已发生的事件。 情感目标:培养学生吃苦耐劳的精神, 同时也要拥有乐观向上的精神。 教学目标 Have you read Little Women yet Yes, I have./No, I haven't. Has Tina read Treasure Island yet Yes, she has. She thinks it's fantastic. Have you decided which book to write about yet Yes, I have. I've already finished reading it. It was really good. 用法 1. 表示过去发生或已经完成的某一动作 对现在造成的影响或结果。 现在完成时 e.g. –Have you had your lunch yet –Yes, I have. I’ve just had it. (现在 我不饿了。) 2. 表示动作或状态从过去某一时刻开始，一直延续到现在，而且可能还要继续下去。 e.g. I haven’t seen her these days. I’ve known Bob for three years. I’ve been at this school for over two years. 时间状语 already, yet, just, ever, never, before ●现在完成时的构成: 现在完成时是由“助动词have / has + 动词的过去分词”构成。助动词要和主语的人称、数保持一致。 一般疑问句： have / has … Yes, I have. No, I haven’t. Yes, she has. No, she hasn’t. 一、过去式和过去分词的变化相同 规则变化： 1. 一般在动词词尾直接加ed。如： pick → picked → picked; wish → wished → wished; stay → stayed → stayed 2. 以不发音的e结尾的动词后面加d。如：like → liked → liked; hope → hoped → hoped; phone → phoned → phoned 3. 以“辅音字母 + y”结尾的动词，变y为i，再加-ed。如： study → studied → studied; hurry → hurried → hurried; reply → replied → replied 4. 词尾只有一个辅音字母的重读闭音节动词，要双写辅音字母，再加-ed。如： stop → stopped → stopped; clap → clapped → clapped 不规则变化： 5. 以不变应万变。如： let → let → let; put → put → put; read → read → read 6. 若中间有双写e，则去掉一个e，单词末尾再加t。如： feel → felt → felt; keep → kept → kept; sleep → slept → slept 7. 结尾的字母d变t。如： lend → lent → lent; build → built → built; send → sent → sent 8. 变为以-ought或-aught结尾。如： buy → bought → bought; bring → brought → brought; catch → caught → caught; teach → taught → taught already和yet都可以作为现在完成时的标 志词，但它们的用法不同。 ◆already一般用于肯定句中。如： We have already cleaned up our classroom. 注意：already用于疑问句中时通常表示惊奇。如： Have you finished your homework already I can’t believe it. ◆yet一般用于疑问句和否定句中。如： Have you seen her yet The bus hasn’t come yet. since 和for since since+过去时间点 I have lived here since 2015. since+时间段+ago I have lived here since 5 years ago . since +从句 I have lived here since I came here. for for +一段时间 I have lived here for 5 years . Complete the sentences with for or since. 1) Mr. Brown has had his TV _____ 15 years. 2) I’ve taken driving lessons _____ last month. 3) My friends haven’t visited me _____ my birthday. 4) We haven’t used our car _____ a long time . 5) She hasn’t had a good cup of ... ...
