Learning about Language第二课时教案

Book 2

Unit 3 Computers

Grammar

【学习目标】To master the Present Perfect Passive Voice 【导学流程】

一、了解感知（Learn by yourself）

1. 观察下列句子——导

①

How long have you been here in Sydney? ②

I know you’ve come to see your father. （1）现在完成时的定义：

（2）现在完成时的结构：

2. 观察下列各句子中使用的时态和语态——思

①

The programme has been broadcasted since November. ②

The five families have been talked about a lot nowadays. ③

Their photos have been made fun of by the netizens. 【归纳拓展】现在完成时被动语态的结构：________________________

现在完成时常与already，so far，__________________________________________等词连用。

【学以致用】Many houses ______ _______ _______during the past 10years (build)

Many trees ______ ______ _______ along the street.( plant)

二、深入学习（Detailed learning & Group work）---议、展、评

1. 现在完成时主动语态转换被动语态

The experts have studied the plan for three times.

2. 现在完成时的否定式及疑问式

This kind of food has been advertised on the newspaper for a month. 否定式：____________________________________ 构成：__________________________ 一般疑问式：________________________________ 构成：__________________________ 特殊疑问式：________________________________ 构成：__________________________ 3.

注意问题

（1）副词的位置often, usually, always, never, hardly, seldom等副词置于have/has和been中间。

Such a man has been hardly believed. (改错) （2）并不是所有动词都有被动语态

_______ ________ ________ _________cost、last、appear等不及

物动词或词组无被动语态。

【学以致用】Great changes have been taken place in China since 1978.（改错）

The book is belonged to me .（改错）

（3）一些特殊动词, 如________, __________, ________, ________,

open, join等构成的现在完成时的被动语态不能与表示一段时间的状语连用。若要表达相应的意思，则需改换动词或时态。

【学以致用】①My brother has bought this bike for almost four years.（改错）

②How long has this book been bought？（判断正误）

How long ago was this book bought？

(4)

带有双宾的词，如give，send，______,_______,________,_______等，变为被动语态时，将其中一个宾语变为主语，其他借助介词to 或者for。

【学以致用】The teacher has given twins a book.（用被动时态对句子进行改写）

①A book

____ ____ _____

by the teacher ____ the twins.

②The twins ____ ____ _____ a book ____ the teacher.

（5）带复合宾语的动词变为被动语态，只能将宾语变为主语，原来省略to 的不定式作宾补的，被动语态_____ 要还原。

【学以致用】My parents have made me work hard .（改为被动态）

______________________________________________________

三、迁移运用

(Self-checking )

——

检

单选1. The school board is made up of parents who ______to make decisions about school affairs. A. had been elected

B. had elected

C. have been elected

D. have elected 2. ---How long _____ at this job?--- Since 1990. A. were you employed

B. have you been employed

C. had you been employed

D. will you be employed

改错

1.The book has not been borrowed last month. 2. The new dictionaries are very useful,so they sell well and have sold out already. 3. The problem has been paid enough attention since it came up at the meeting, 4. Paper money has been used in over a thousand years. 5.I am sorry,but the letters haven’t been typed already. 用被动语态改写下列句子. 1.

They have finished the construction of the new railway lines by now. _____________________________________________________________

2.

They have made a plan to help the poor children in the poor area. _____________________________________________________________