牛津英语8B Unit1复习教案
牛津英语8b unit1复习教案(第1课时)
单元
unit 1
课题
terminal revision
课时
1
日期
教学目的
1. to go over the knowledge in unit 1
教学重点和难点
1. present perfect tense and some words and expressions
教学过程
一、重点单词：just, since, fact, turn, miss, pleasant, land, way, lonely, lucky, grandpa, unkind, impolite, over, unhealthy
二、短语运用： in fact, get married, turn into, noise pollution, take off, in some ways, from time to time, be in service/use, free time, on one’s own, on longer, the changes to;
三、重点结构：it is easy for him to see them as often as before.
it was built to the north of lantau island.
i wish you a happy holiday.
it no longer provides a good environment for wildlife.
the changes have brought many benefits but they have also caused many problems for wildlife.
四、语法：现在完成时，present perfect tense
1、现在完成时所表示的动作发生在过去，但考虑较多的不是动作发生在过去的什么时候，而是强调与目前的联系，即过去与现在的关系。强调过去的动作对目前造成的影响和后果，或强调动作本身或状态持续地现在，因此属于现在时范畴。它的主要用法可概括为八个字：影响、结果、持续和经历。
2、现在完成时的构成：
肯定式：i/we/you/they have + been/ worked
she/he/it has + been/worked
否定式：have not +been/worked
has not + been/worked
疑问式：have +主语+been/worked …?
has + 主语+ been/worked…?
3、现在完成时的用法
（1） 表示过去发生的某一动作对现在生成的影响或结果。
如：he has read the book.他已经读过这本书了。
“读书”是发生在过去的动作，对现在造成的结果是“读过了”。
(2) 表示动作过去已经开始，持续到现在，可能还要继续下去。这时往往与表示一段时间的状语连用。
如：he has worked for more than three years. 他工作三年多了。
i have been in suzhou for ten years. 我来苏州已经十年了。
(3) 现在完成时属于现在时态范畴，不能和表示过去的时间状语连用，如yesterday, last week, a day ago等。但可以和never, ever, already, yet, just(刚刚), for…, since…, in the past three years, so far(到目前为止), by now, before（以前）等连用。
