英语人教版八年级下册Unit 8 Section A (1a-2d).doc

Unit 8 Have you read Treasure Island yet ?Section A 3 (Grammar Focus -4c)教学目标：知识目标：A.复习现在完成时的句型及标志词。B.核心句型：1.Have you read Little Women yet?Yes, I have./No, I havent.2. Has Tina read Treasure Island yet?Yes, she has. She thinks its fantastic.3. Have you decided which book to write about yet?Yes, I have. Ive already finished reading it. It was really good.能力目标：能把现在完成时运用到具体问题中。教学重难点：重点：1.熟练掌握already, just,yet在现在完成时中的用法。 2.掌握常用动词的过去分词形式。难点：能正确使用现在完成时教学过程：Step 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 yet?Yes, I have. Ive already finished reading it. It was really good.Step 2现在完成时构成：助动词have / has+动词的过去分词，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。规则变化：1.一般加ed。如：pickpickedpicked; wishwishedwished; staystayedstayed2.以不发音的e结尾的动词后面加d。如：likelikedliked; phonephonedphoned3.以“辅音字母+ y”结尾的动词，变y为i，再加-ed。如：studystudiedstudied;4.以辅元辅结尾的，双写再加-ed。如：stopstoppedstopped; clapclappedclapped不规则变化：5.以不变应万变。如：letletlet; putputput; readreadread6.若中间有双写e，则去掉一个e，单词末尾再加t。如：feelfeltfelt; keepkeptkept; sleepsleptslept7.结尾的字母d变t。如：lendlentlent; buildbuiltbuilt; sendsentsent8.变为以-ought或-aught结尾。如：buyboughtbought; bringbroughtbrought; catchcaughtcaught; teachtaughttaught句式：1.肯定句：主语+ have / has +过去分词(+其它)2.否定句：主语+ have / has + not +过去分词(+其它)3.一般疑问句：have/ has +主语+过去分词(+其它)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。)时间状语：already, yet, just, ever, never, before2.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 known Bob for three years. Ive been at this school for over two years.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。1、already意思是“已经”通常用于陈述句中（放在have和has的后面）也可用于疑问句，表示期望得到肯定的回答或表示惊异，此时already常放在句末。She has already found her bike. Has she found her bike already？她已经找到自行车了？2、yet用法 yet可用于否定句，此时译为“还”；I havent found my ruler yet. 也可以用于疑问句，译为“已经”（放在have和has的后面也可放在句末）Have you found your ruler yet？你已经找到尺子了吗？3、just只用于陈述句意思是“刚才”（放在have和has的后面）I have just received a letter. 活学活用：写出下列动词的过去式、过去分词：drink _ _see _ _find _ _leave _ _ tell _ _Why is Mr. Yang still in the teachers office?Maybe he _ his work yet.A. doesnt finishB. 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 filmhavent told them 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 HomeworkRecite the sentences in grammar focus.板书设计：Have you read Little Women yet?Yes, I have./No, I havent.Has Tina read Treasure Island yet?Ye