新概念英语第一册 Lesson 143-144（被动语态二）课件(共18张PPT)

(共18张PPT)
Lesson 143-144
A walk through the woods
New Words Time
surround [s 'raund] v. 包围
wood [wud] n. 树林
beauty spot ['bju:ti-sp t] 风景点
hundred ['h ndrid] n. 百
city ['siti] n. 城市
through [θru:] prep.穿过
visitor ['vizit ] n. 参观者，游客，来访者
tidy ['taidi] adj. 整齐的
litter ['lit ] n. 杂乱的东西
litter basket 废物筐
place [pleis] v. 放
throw [θr u] v. 扔，抛
rubbish ['r bi ] n. 垃圾
count [kaunt] v. 数，点
cover ['k v ] v. 覆盖
piece [pi:s] n. 碎片
tyre ['tai ] n. 轮胎
rusty ['r sti] adj.生锈的
among [ 'm ] prep.在…之间
prosecute ['pr sikju:t] v. 依法处置
Grammar Time
主动语态变被动语态
主动语态变被动语态的步骤：
找主语和宾语
主语和宾语调换位置
动词改成be+done的正确形式
宾语前加上by
找
换
改
加
1.
2.
3.
4.
被动语态的时态：
只改变be的形式,
过去分词部分都不变,
疑问句和否定句的变化也是如此.
1) 一般现在时的被动语态：be (is/ am/ are) +done
3) 一般将来时的被动语态：will/shall/ be going to be +done
2) 一般过去式的被动语态:was/were +done
The thieves will be caught soon.
The flowers are watered every day.
Sally was invited to a party.
4）现在进行时的被动语态：is/ am/ are +being+done
6）现在完成时的被动语态：have/has +been +done
5）过去进行时的被动语态：was/were +being +done
7）情态动词的被动语态：情态动词+be +done
一现
be
am/is/are
现进
be
am/is/are+
一过
be
was
一将
be
will
现完
be
has/have
情态动词
be
can
be
ing
/ were
be
be
en
be
be体现时态
done恒定不变
done
done
done
done
done
done
各种时态被动
Exercise 1
1. The patient __________ tomorrow.
A. will be operated on B. will operate
C. repairing D. be operated
2. Litter baskets ______ under the trees.
A. have placed B. have been placed
C. is placed D. are placing
3. The old town ______ beautiful woods.
A. is surrounding by B. is surrounded by
C. is surrounded in D. surrounded by
A
B
B
Exercise 2
按括号内提示改写句子
1. I have seen this movie three times.（改成现在完成时被动语态）
2. The worker will make a nice table.（改成一般将来时被动语态）
This movie has been seen three times.
A nice table will be made by the worker.
Text Time
I live in a very old town which is surrounded by beautiful woods. It is a famous beauty spot. On Sundays, hundreds of people come from the city to see our town and to walk through the woods. Visitors have been asked to keep the woods clean and tidy. Litter-baskets have been placed under the trees, but people still throw their rubbish everywhere.
Last Wednesday, I went for a walk in the woods. What I saw made me very sad. I counted seven old cars and three old refrigerators. The litter-baskets were empty and the ground was covered with pieces of paper, cigarette-ends, old tyres, empty bottles and rusty tins. Among the rubbish I found a sign which said:” Anyone who leaves litter in these woods will be prosecuted.”!
1.on Sundays
2.hundreds of people
3.walk through the woods
4.keep the woods clean and tidy
5.throw rubbish everywhere
6.I find a sign which said…
7.be surrounded by beautiful woods
8.go for a walk
9.be covered by
1.每个星期天
2.几百人
3.在树林里散步
4.保持树林干净整洁
5.到处扔垃圾
6.我发现一个标识上面写着…
7.被漂亮的森林包围
8.去散步
9.被…覆盖
说出中文意思
Thank you
See you next time.