1、The third period Grammar学习目标了解一般过去时和现在完成时的区别。能组织含有一般过去时和现在完成时的句子。学习重难点1. 掌握本单元的重要短语。2. 区别一般过去时和现在完成时的。一、自主学习A.Fill in the blanks:Last Sunday, Ted and his father _ (be) at home. They _ (move) to a new house. His father _(want) to put the books in some boxes, but he _ (can not) find any boxes. Ted _ (
2、tell) him the boxes _ (be) in the next room. Then he _ (bring) these boxes to his father. 1, Is Tom doing his homework? No, he _ (finish) his homework.2. Do you know Miss King? No, but I _ (hear of) her before.3. What about the film? Sorry, I dont know. I _ (not see) it yet.4. _ you ever _ (be) to t
3、he Great Wall? No, never.5. Help yourself, please. No, thanks. I am full. I _ just _ (eat) three eggs.B. 通过练习你能说出他们的区别吗?二、合作助学Differences:1. 构成不同(1) Tom went to London last year.(2) Lily has been to London twice.一般过去时 谓语动词用动词的过去式; 现在完成时 谓语动词用 “助动词 have/has +过去分词”。2. 用法不同(1) I had supper an hour ago.
4、 我一小时前吃的晚饭。(表示过去的动作)(2)I have just had supper.我刚刚吃过晚饭。 (强调对现在的影响 我不饿)(3)He was a teacher then. 他那时是个教师。 (表示过去的状态)(4)He has been a teacher since then.他从那时起一直当教师。(他现在还是教师)(5)We havent seem him since last year. 我们自从去年以来一直未见到他。(现在还未见到)(6) We didnt see him last year. 我们去年没见到他。(现在不一定未见到) (7) Who has open
5、the door? 谁把门开了? (现在门还开着) (8) Who opened the door? 谁开的门? (指过去,和现在无关。)( 现在不知道门开的还是关的)3. 时间状语不同(1) 一般过去时的时间状语: Yesterday, once, last week, .ago, in 1980, in October, just now 等。(2)现在完成时的时间状语: for, since, so far, ever, never, just , yet, till, up to now,等。Finish Part A and B on Page41.完成书上练习。三、点拨拓展1. 一
6、般过去时表示在过去某个时间发生的动作或存在的状态,也表示过去经常或反复发生的动作。e.g. He came here yesterday.2. 现在完成时表示过去的动作(或者状态)对现在产生的影响和结果。e.g. He has broken the glass.现在完成时的含义现在完成时用来表示之前已发生或完成的动作或状态,其结果和现在有联系,动作或状态发生在过去但它的影响现在还存在;也可表示持续到现在的动作或状态;还可以表示一个动作到现在为止发生了多少次。一、 课堂检测填空和翻译:1.- you ever this book? -Yes. I it two weeks ago. (read)
7、 2. Last week we (visit) the museum.3. He (work) here since 2010.4. Kimi (have) a new computer now, he (buy) it last year.5. She (go) to America three times.6. Tom (live) in that small town in 2000, and he just 7. 他已经从英国回来了,他是一周前回来的。8. 昨天他参观了许多名胜。9. 她从没去过那个美丽的城市。10.到目前为止他住在这里已有二年了。11.这孩子已抓住了那只狗。教后反思: 语法学习是学生的难点,只能通过大量的机械训练来让学生渐渐明白语法中时态的区别用法。