人教版八年级下册SectionA 教案.doc

Unit 6How long have you been collecting shells?每个人都有自己的爱好，有的人喜欢集邮，有的人喜欢跳舞，有的人喜欢听音乐那么，你的爱好是什么呢？你有这种爱好多长时间了？下面跟着老师一起开始本单元的学习吧。首先让我们来学习一下Section A，请同学们先跟着老师朗读一下1a部分的对话。-Alison, how long have you been skating?-Ive been skating for five hours.-Wow.在这个对话中出现了（1）生词skate，该词可做名词，意为“滑冰鞋” ；也可作动词，表示“滑冰，溜冰”（2）短语 “how long”,常用来询问时间或长度。例句：How long have you been like this? 你像这样有多长时间了？(3) have/has been +动词的-ing形式是现在完成进行时的结构。现在完成进行时表示动作从过去开始一直延续到现在，而且还将继续延续下去。现在完成进行时常与for或since引导的时间状语从句连用。其中since后接时间点，说明动作起始的时间；for后接某段时间，用来说明动作延续的时间长短。（4）How long have/has+主语+been doing? 的句型，表示询问某人处于“某状态”中有多长时间，在回答时，常常用介词for或since引导的时间状语从句来回答，而且句中的谓语动词必须为延续性动词。例句：-How long have you been writing in English? 你用英语写文章有多长时间了？-For about 2 years. 大约两年了。老师讲解完对话中的知识点，相信同学们一定明白对话的意思了吧。下面让我们看一下这段对话的译文。-艾莉森，你滑冰滑了多长时间？-我已经滑了五个小时了。-哇！接下来，我们来看一下山顶学校滑冰马拉松比赛的报道吧，请同学们看着3a部分的短文，跟着老师大声的朗读一遍。Im talking to you from the Hilltop School Skating Marathon. Here, students are skating to raise money for charity. For every hour they skate, each student raises ten yuan for charity. The skating marathon has been going for five hours now, and several skaters are still skating. Alison was the first one to start and has been skating for the whole five hours. Next is Sam, and he has been skating for four hours, Lu Ning has been skating for four hours too, and Li Chen just started an hour ago.本段短文中出现的生词有：raise 该词做动词时有下面几种意思。（1）“筹集，筹募” 例句：They raised lots of money for the poor students in the village.他们为乡村的穷学生募集了很多钱。（2）“举起，抬起”例句：He raised his head and said nothing to us. 他抬起头什么都没对我们说。（3）“增加，增高，提升”例句：The landlord raised my rent.房东提高了我的租金。（4）“饲养，养育”例句：The baby was raised in milk.这孩子是喂牛奶长大的。several 形容词，意为“几个的，数个的”，修饰可数名词，常用于肯定句中。例句：He was seriously injured in the accident and died several days later.他在那次事故中受了重伤，几天后就死了。接着请同学们跟着老师来看一看本段短文中出现的知识点。raise money for 意为“为筹款”例句：People took an active part in raising money for people in Yushu, Qinghai after the earthquake.震后，人们积极为玉树震区的人们捐款。the first one to do sth意为“第一个做某事的”。常见结构：the+序数词+sb+to do sth。意为“第几个做某事的人”。例句：She is the first one to get to school today. 今天她是第一个到校的人。 动词go在句子“The skating marathon has been going for five hours now.”中意为“进行，持续”。例句：Everything goes we