新概念二册45课

1、Hello ! Everyone !Lets have a happy class!A clear conscience 问心无愧问心无愧Lesson 45Tongue Twister Jack had a rat; Sam had a cat. Sams cat ate Jacks rat. Jack asked Sam to pay for his rat. Sam said, Ill give you my cat for your rat.I lost a I lost a large sum large sum of money.of money.What should we do

2、when we lost money?Someone must have stolen my money.The lostlostandandfoundfoundFirst watch the video and then answer the question.Was all the money Was all the money returned back?returned back?What did the last What did the last note say?note say?New words and New words and expressions 1.clear ex

3、pressions 1.clear adj. kliadj. kli adj.adj.晴朗的晴朗的, , 清澈的；清澈的； 无愧的无愧的, , 清白的；清白的； 清楚的清楚的, , 明白的；明白的；2.conscience n. 2.conscience n. knns 良心，道德心良心，道德心savings n.savings n.sevz 存款存款villager n.villager n.vilid村民村民per centper centpsent百分之百分之Watch and pay attention to the intonation and pronunciation.Liste

4、n and fill in the blank.1A clear conscience, （标题）问心无愧。（标题）问心无愧。clear清白的清白的,无罪的无罪的清白的良心清白的良心 a good consciencea bad conscience感到内疚感到内疚2The whole village soon learnt that a large sum of money had been lost. village总总称称，村民，村民the whole village全村的人全村的人, 通常跟单数动词：通常跟单数动词：The whole village excited by the ne

5、ws.（2）learn获悉、得知获悉、得知我刚刚得知她病了。我刚刚得知她病了。3Sam Benton, the local butcher, had lost his wallet while taking his savings to the post office. 时间状语从句时间状语从句while he was taking .现在分词这样用的前提现在分词这样用的前提: 两个动词的主语是同一个，两个动词的主语是同一个， 两个动作通常是同时发生的两个动作通常是同时发生的.他一边打扫房间一边听音乐。他一边打扫房间一边听音乐。我打扫房间时，他在听音乐。我打扫房间时，他在听音乐。4Sam wa

6、s sure that the wallet must have been found by one of the villagers对对_情况进行猜测情况进行猜测E.g.他一定早走了他一定早走了。(early)5it contained half the money he had lost.half the money= half of the money这面包有一半已变质这面包有一半已变质了了.(bad)6pay back（1）偿还：）偿还：All Sams money was paid back in this way.（2）报答；向）报答；向报复：报复：Youve been very

7、kind to me. How can I pay you back? 你对我太好了。我如何报答你呢？你对我太好了。我如何报答你呢？He embarrassembrs me at the party. Ill pay him back someday.在晚会上他让我难堪了。总有一天我会报在晚会上他让我难堪了。总有一天我会报复他的。复他的。steal(sth.) from(sb./ some place) rob(sb.) of(sth.)7.steal和和 rob8In time, all Sams money was paid back in this way. in time及时，最后in

8、 this way用这样的方式用这样的方式 一、什么是语态？一、什么是语态？语态是英语动词的一种表现形式，用来说明主语和语态是英语动词的一种表现形式，用来说明主语和谓语动词之间的关系。谓语动词之间的关系。二、语态的种类二、语态的种类：（1 1）主动语态）主动语态 （2 2）被动语态）被动语态三、被动语态的构成：三、被动语态的构成：( (八种时态下的被动语态）八种时态下的被动语态） 被动语被动语态态L10.21.34 1)am/is/are +done 一般现在时一般现在时 2)has /have been done 现在完成时现在完成时 3)am/is /are being done 现在进行

9、时现在进行时 4)was/were done 一般过去时一般过去时 5)had been done 过去完成时过去完成时 6)was/were being done 过去进行时过去进行时 7)shall/will be done 一般将来时一般将来时8)should/would be done 过去将来时过去将来时 被动语态的特殊结构形式被动语态的特殊结构形式带情态动词的被动结构带情态动词的被动结构 其形式为：情态动词其形式为：情态动词be过去分词。过去分词。主动语态变被动语态应注意的问题主动语态变被动语态应注意的问题1.把主动语态变为被动语态时，应保留主动语态把主动语态变为被动语态时，应保留

10、主动语态原来原来的时态。如：的时态。如：She often cleans the house. The house is often cleaned by her.2.有些动词可以有双宾语，在用于被动结构时，有些动词可以有双宾语，在用于被动结构时，通常变为主语的是间接宾语（通常变为主语的是间接宾语（sb.）His mother gave him a present for his birthday.He was given a present by his mother for his birthday.3) 当当“动词动词+宾语宾语+宾语补足语宾语补足语”结构变为被动语态时，结构变为被动语态

11、时，将宾语变为被动结构中的主语，其余不动将宾语变为被动结构中的主语，其余不动.Someone caught the boy smoking a cigarette(香烟）香烟）=The boy was caught smoking a cigarette.4）在使役动词）在使役动词have, make, get以及以及感官动词感官动词see, watch, notice, hear, feel, observe等变为被动结构时，要加等变为被动结构时，要加toSomeone saw a stranger walk into the building=A stranger was seen to

12、walk into the building. 5) 有些相当于及物动词的有些相当于及物动词的动词词组动词词组，如如“动词介词动词介词”，“动词副词动词副词”等等,也可以用于被动结构，也可以用于被动结构，但要把它们但要把它们看作一个整体看作一个整体,不能分开不能分开。其中的介。其中的介词或副词也不能省略。词或副词也不能省略。The meeting is to be put off till Friday. 一、系动词一、系动词 taste, smell, feel, sound, look等可用主动形式表达被动意义。如等可用主动形式表达被动意义。如:1这些花闻起来很香。这些花闻起来很香。2那听

13、起来很有道理。那听起来很有道理。3那食物尝起来很可口。那食物尝起来很可口。These flowers smell sweet.That sounds very reasonable. The food tastes delicious.二、某些与二、某些与 cant wont 等连用的不及物动等连用的不及物动词，如词，如move, lock, shut, open 等可用主动等可用主动形式表达被动意义。如：形式表达被动意义。如：1盒子不能移动。盒子不能移动。2门不会关。门不会关。The box cant move.The door wont shut.三、某些可用来表示主语内在品质或性能三、某

14、些可用来表示主语内在品质或性能的不及物动词，如的不及物动词，如 sell, write, wash, clean,last(耐久耐久), wear(耐穿耐穿), 等可用主动形式表等可用主动形式表达被动意义达被动意义. 如如:This kind of food sells well. 这种食物畅销。这种食物畅销。This cloth washes well and lasts long. 这布料经洗、耐穿。这布料经洗、耐穿。The floor doesnt clean easily. 这地板不容易弄干净。这地板不容易弄干净。四、在四、在need, want 之后，可用之后，可用动名词的主动形式表

15、示被动意义。动名词的主动形式表示被动意义。1树需要浇水。树需要浇水。2孩子需要照顾。孩子需要照顾。3电视机需要修理。电视机需要修理。The trees need watering. Children want looking after.The TV needs mending.五、形容词五、形容词 worth 后面要用动名词的主后面要用动名词的主动形式表示被动意义。如：动形式表示被动意义。如：1小说值得一读。小说值得一读。2事情值得做。事情值得做。The novel is worth reading.The thing is worth doing.六、动词不定式的主动形式表示被动意义：六、

16、动词不定式的主动形式表示被动意义： 不定式作定语与被修饰的名词或代词构成不定式作定语与被修饰的名词或代词构成 动宾关系时，如：动宾关系时，如：我有许多事情要做。我有许多事情要做。他有几项任务要完成。他有几项任务要完成。I have a lot of things to do.He has several tasks to complete.2. 在在“系动词系动词+形容词形容词+不定式不定式”结构中，结构中，常见句型有：常见句型有： n. +be + too + adj. + to do The plane is too high to see. 2) n. +be + adj. + enou

17、gh + to do The book is cheap enough for me to buy. 3) n. + be + adj. + to do The question is not easy to answer.课堂练习课堂练习（一）改写句子（一）改写句子1. We plant trees in spring every year. _ by us in spring every year.2. She posted the letter yesterday. _ by her yesterday.3. Mr Turner gave me a birthday present. _

18、a birthday present by Mr Turner.4. He is drawing a picture. _ by him.5. You may hand in your homework tomorrow. _ by you tomorrow.6. She is going to write a letter. _ by her.7. I have given you the new book. _ to you.8. Her bag cannot be found by her. _ her bag.9. Do you often hear her sing Russian

19、songs? _Russian songs by you?10. She doesnt let her son swim in the river. _ in the river by her.11. The bridge was being built by them at this time last year. _ the bridge at this time last year.12. Does she often sing the song? _ by her?课堂练习课堂练习（一）改写句子（一）改写句子1. We plant trees in spring every year. _ by us in spring every year.2. She posted the letter yesterday. _ by her yesterday.3. Mr Turner gave me a birthday present. _a birthday present by Mr Turner.4. He is drawing a picture. _ by him.5. You may hand in your homework tomorrow. _ by you tomorrow.6. She is go