高中英语必修二Unit3 Computers Grammar语法课件

already, always, often, ever, never, yet,
not...yet, just等不表示明确的时间副词
连用, 还可以和表示时间一直延续到目
前的带since, for 的状语及包括现在在
内的词连用。如: now, today, this
month, this year, recently, these few
good care of.
4. 一些特殊动词, 如borrow, finish, begin, buy, start, return, marry, open, join等 构成的现wk.baidu.com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。 如：
My brother has had(不能用has bought) this bike for almost four years. How long has this book been bought? How long ago was this book bought?
seldom等副词置于have/has和been中间。 如: [误] Such a man has been hardly believed. [正] Such a man has hardly been believed.
2. 并不是所有动词都有被动语态 1) happen, take place, break out, belong to, cost, last等不及物动词或词组无被 动语态。如： [误] Great changes have been taken place in China since 1978. [正] Great changes have taken place in China since 1978.
5) 带复合宾语的动词变被动语态时, 只能 将宾语变为主语, 原来的宾补保留不 动, 改称主语补足语。 主动：I have asked her to help you. 被动：She has been asked to help you.
Underline the use of the
present perfect voice in the
2) open, break, drop等不强调动作发出者 时常用主动语态。如：
[误] The door has been opened of itself.
[正] The door has opened of itself. 3. 短语动词不可分割或省略其中的介词
或副词。如：
The SARS patients have been taken
1. The dirty clothes have been washed. 脏衣服都已经洗了。 2. The plan has been studied by the
experts for three times.
这项计划已经由专家研究过三次了。
3. The child has been taken care of by Grandma Wang all these years. 这些年来, 这个小孩一直由王奶奶照料。 现在完成时被动态： have / has + been + 动词过去分词 现在完成进行时： have / has + been + 动词现在分词
被动语态的用法:
(1) 不知道或没有必要说明动作的执行者 是谁。 如: Some new computers were stolen last night. 一些新电脑在昨晚被盗了。 (不知道电脑是谁偷的)
This book was published in 1981.
这本书出版于1981年。
(2) 强调动作的承受者, 而不强调动作的执
You’d better do them again.
Look at the way the flowers have been planted
Look at the way the grass has been cut
Look at the way the paths have been swept I hope that you’ll come here again.
3) 一般将来时的被动语态 (will/shall + be + 过去分词或 + be going to + be + 过去分词) 如: The work will be finished soon. 4) 现在进行时的被动语态 (is/am/are + being + 过去分词) 如: The bridge is now being constructed.
5) 现在完成时的被动语态 (have/has +been
+ 过去分词） 如: The radio has been repaired when we phoned the shop. 6) 带情态动词的被动语态 (情态动词 + be + 过去分词) 如: This can be done in a few minutes.
从A、B、C、D四个选项中，选 出可以填入空白处的最佳选项。 1. In the last few years thousands of films _____ all over the world. (天津2011) A. have produced B. have been produced C. are producing D. are being produced
factory.
歌
诀
宾变主, 主变宾, by 短语后面跟。
谓语动词变被动, be 后“过分”来使
用。
4) 双宾语动词变被动语态可将其中的一 个宾语变为主语， 另一个保留不动。 主动：I have given him the key.
被动：He has been given the key.
被动：The key has been given (to) him.
（我或别人现在进不去） 门已经被锁上了。
有人告诉他这事很多次了。
（可能还会有人告诉他）
4. 用在时间和条件状语从句中, 表示将来
某时已完成的动作。如：
We’ll start as soon as the work has
been finished.
工作一完成我们就立即动身。
1. 副词的位置
often, usually, always, never, hardly,
人教课标 高一 必修 2 Unit 3
The Present Perfect Passive Voice
现在完成时的被动语态
1. 两种时态
1) 现在完成时(have/has + 过去分词)
现在完成时的动作或情况虽然发生在过
去，但它强调的是与现在的关系，用来 说明现在的情况。现在完成时不能与表 示确定的过去时间的状语连用, 如: yesterday, two weeks ago, in 1978, when I got there 等, 现在完成时常与
following poem. Then fill in the chart below.
Look at the way your face has been washed Look at the way your hair has been combed Look at the way your shoes have been cleaned
(3) 把主动语态中的主语放在介词by之后作 宾语, 将主格改为宾格。例如： All the people laughed at him. He was laughed at by all people. They make the bikes in the factory.
The bikes are made by them in the
your bed has been made Look at the way ________________________ your carpet has been swept Look at the way ________________________ Look at the way your shoes have been tidied ________________________ _________________________________ I hope that you’ll come here again.
the way the paths have been swept
Read this poem aloud, paying attention to
the rhythm and intonation. Then write your own poem. Look at the way the table has been laid ______________________ Look at the way the glasses have been placed ______________________ Look at the way the food has been cooked ______________________ _________________________ You’d better do them again.
7) 动词不定式的被动式 (to be + 过去分词) 如: It is an honor for me to be asked to speak here.
现在完成时的被动语态
现在完成时的被动语态表示动作发生在
过去, 到现在已经完成或对现在仍有影响,
其构成是: have/has been + done。例如：
Things that have been done well the way the flowers have been planted the way the grass has been cut
Things that have been done badly the way your face has been washed the way your hair has been combed the way your shoes have been cleaned
days 等。
不能用在现在完成进行时态的动词， 如：be, have, like, love, know, believe,
hate等。
一般过去时则是表示过去某时发
生的动作或情况, 与现在毫无关系。
2) 现在完成进行时 (have/has + been + 现 在分词)
2. 七种被动语态形式
1) 一般现在时的被动语态 (am/is/are + 过 去分词） 如: The work is done during two days. 2) 一般过去时的被动语态 (was/were + 过 去分词） 如: He was sent to the hospital immediately after the accident.
它们的构成的区别在最后的动词上, 被动态接的是过去分词形式, 现在完成 进行时接的是现在分词形式。 1. 主语是行为动作的承受者。如： The Temple of Zhang Fei has been rebuilt. 张飞庙已经过重建。
2. 说话时已经完成的动作或出现的结果。 如: The door has been locked. 3. 动作或状态始于过去, 持续到现在, 并可 能持续下去。如： He has been told about it for many times.
行者。
如: The window was broken by Mike.
窗户是迈克打破的。 This book was written by him. 这本书是他写的。
主动语态变被动语态的方法
(1) 把主动语态的宾语变为被动语态的主 语。 (2) 把谓语变成被动结构(be＋过去分词) (根据被动语态句子里的主语的人称和 数，以及原来主动语态句子中动词的 时态来决定be的形式)。