1、Unit 6 Have you read Treasure Island yet? Section A Grammar Focus-4cStep 1 Warm upRead the following sentences we have seen.Have you read Little Women yet?Yes, I have./ No, I havent.Has Tina read Treasure Island yet?Yes, she has. She thinks its fantastic.Have you decided which book to write about ye
2、t?来源 :gkstk.Com来源 :学优高考网 Yes, I have. Ive already finished reading it. It was really good.Step 2 现在完成时用法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. Ive just had it. (现在我不饿了。) 来源:学优高考网 gkstk2. 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 havent seen her these days.Ive kn
3、own Bob for three years.Ive been at this school for over two years.时间状语already, yet, just, ever, never, before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：pic
4、k picked picked; wish wished wished; stay stayed stayed2. 以不发音的 e 结尾的动词后面加 d。如：like liked liked; hope hoped hoped; phone phoned phoned3. 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 replied4. 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; cl
5、ap clapped clapped不规则变化：来源:gkstk.Com5. 以不变应万变。如：let let let; put put put; read read read6. 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 slept7. 结尾的字母 d 变 t。如：lend lent lent; build built built; send sent sent8. 变为以-ought 或-aught 结尾。如：buy bought bought; bring brought brought
6、; catch caught caught; teach taught taught句式1. 肯定句：主语 + have / has + 过去分词 (+ 其他)2. 否定句：主语 + have / has + not + 过去分词(+ 其他)3. 一般疑问句：have/ has + 主语 + 过去分词(+ 其他)4. 特殊疑问句：1) 特殊疑问词 (不是句子主语 ) + have / has + 主语+过去分词 (+ 其他)2) 特殊疑问词(是句子主语)+have / has+过去分词(+ 其他)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
7、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 cant believe it.yet 一般用于疑问句和否定句中。如：Have you seen her yet?The bus hasnt come yet.活学活用Write the forms of the past tense and past participle:drink _ _see _ _find _ _leave _ _tell _ _Wh
8、y is Mr. Yang still in the teachers office?Maybe he _ his work yet.A. doesnt finish B. hasnt finishedC. havent finishedStep 3 Exercises1. Finish 4a and check the answers.Keys: I have just drunk some tea.Have you found it?He has already left.did he leaveShe has already seen the film havent told them
9、yet2. Finish 4b and check the answers.Keys: loves, has read, will be, finished, will write, hasnt read3. Finish 4c and check the answers.Make conversations and complete the chart. (Follow the conversation on page 60)Step 4 中考链接( )Do you know the movie Lost in Thailand? Yes. I _ it twice. Its funny.A. saw B. see C. have seen D. will see( ) Lunch?No, thanks. I_.来源:学优高考网A. will eat B. am eating C. have eaten( ) Where is Tom? We cant find him anywhere. Perhaps he _ home.A. has come B. is goingC. went D. was goingKeys: CCA
