8B Unit1复习教案

时间：2021-12-16 12:51:06 教案我要投稿

8B Unit1复习教案

8B Unit1复习教案2010年12月24日星期五13：42 8B Unit1复习教案

教学目的1.To go over the knowledge in unit 1

8B Unit1复习教案

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 ahappy holiday.

It no longer provides agood environment for wildlife.

The changes have brought many benefits but they havealso 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"。

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。

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。

如：Have you finished your picture yet?你已经完成你的画了吗?

I have never heard of him before.过去我从未听说过他。

瞬间动词也叫短暂性动词。这种动词动作开始也就意味着结束，所以不能与表示一段时间的状语连用。这些动词是become,begin,start,buy,borrow,arrive,come,die,fall,finish,go,join,leave,marry等。这了表述这种意思，我们常用相应的延续性动词have,keep等或短语"be+名词/形容词/位置副词/介词短语"来代替短暂性动词。

如：He has kept the book for three weeks.这本书他已借了三周了。

The meeting has been on for half an hour.会已开始半小时了。

He has been in the army for three years.他参军三年了。

5)其他词组的区别

①since和for的区别

since短语或从句表示过去的'动作延续至今，since之后为时间点。如：He has lived here since 2000.2000年以来他一直住在这儿。

I haven't seen him since ten years ago.自十年前开始我就没见过他。

I have known him since Iwas very young.我很小时就认识他了。

For短语表示动作延续多长时间，for后面跟时间段。

如：He has lived here for three years.他住这儿已经三年了。

I haven't seen her for along time.我已经好久没见到她了。

②have/has been in,have/has been to和have/has gone to的区别