八年级英语下册U8第一课时课件.ppt

Unit 8 Have you read Treasure Island yet?;Section A 1a—1c;Have you heard of these books?;—Have you read Oliver Twist yet?;—Have you read Tom Sawyer yet?;—Have you read Treasure Island yet?;—Have you read Alice in Wonderland yet?;—Have you read Little Women yet?;—Have you read Robinson Crusoe yet?;Do you know the main characters of these books? Which book titles tell us the main characters? Which book do you like best? Why?;Alice in Wonderland Treasure Island Little Women Oliver Twist Robinson Crusoe Tom Sawyer;What books are they talking about?;Book tile;Pairwork;A: Have you read Alice in Wonderland yet ? B: No, I haven’t. Have you? A: Yes, I’ve already read it. B: What’s it like? A: It’s amazing.;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。 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. ;构成 现在完成时是由“助动词have / has+ 动词的过去分词”构成的，规则动词的过去分词构成与过去式相同，不规则动词的过去分词则需逐个记忆。 ; 动词的过去式的变化和过去分词的变化并不完全相同。我们对它们作了一个大致的分类。 (注：例子中单词的变化顺序为：动词原形 → 动词的过去式? → 动词的过去分词);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???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;Visit