概要：【 思维体操 】Use Your HeadA man wants to take a dog , a hen and some rice across a river . But there is only one boat and he can only take one at a time . If he leaves the hen with the rice only , the hen will eat the rice；if he leaves the dog with the hen only , the dog will hurt the hen . He thinks it over and an idea comes to his mind . Do you know how the man manages to take them all across the river without the hen\'s eating the rice and the dog\'s hurting the hen?答案：
高二英语第二十二单元A Tale of Two cities,标签：高二英语选修7教案,高二英语下册教案,http://www.67jx.com【 思维体操 】
Use Your Head
A man wants to take a dog , a hen and some rice across a river . But there is only one boat and he can only take one at a time . If he leaves the hen with the rice only , the hen will eat the rice；if he leaves the dog with the hen only , the dog will hurt the hen . He thinks it over and an idea comes to his mind .
Do you know how the man manages to take them all across the river without the hen\'s eating the rice and the dog\'s hurting the hen?
答案：He takes the hen over first , leaves it there , returns and takes the rice . He leaves the rice and brings the hen back with him . He leaves the hen and takes the dog . Then he leaves the dog and returns for the hen .
三、智能显示
【 心中有数 】
单元语法发散思维
非谓语动词的逻辑主语与测试热点
动名词、分词、不定式由于句意或语法的需要，要带上自身的逻辑主语 (也称作复合结构) ，它们依据在句中所起的不同作用需要不同的形式，在测试中极易混淆，下面是考试的热点：
※ 动名词的逻辑主语
1. I would appreciate ____ back this afternoon .
A . you to call B . you call C . your calling D . you\'re calling
2. Do you mind ____ alone at home ?
A . Jane leaving B . Jane having left C . Jane\'s being left D . Jane to be left
3. How about the two of us ____ a walk down the garden ?
A . to take B . take C . taking D . to be taking
4. I can\'t understand ____ at that poor child .
A. you to laugh B. you laugh C. why laugh D. you laughing
［分析］答案依次为C、C、C、D。
〖思维一〗动名词的逻辑主语有两种形式：
1 . 动名词及其逻辑主语在句中一同作主语时，只能用形容词性物主代词或名词所有格，不可用宾格或普通格。如：
My (Tom\'s) being late made the teacher angry . (作主语不可用 me 或 Tom)
His (Smith\'s) being elected manager surprised us a lot . (作主语不可用 him 或 Smith)
2 . 动名词及其逻辑主语在句中一同作宾语时，动名词的逻辑主语除用物主代词和名词所有格外，还可用代词宾格或名词普通格。如：
The teacher is angry at my (Tom\'s ) being late . (作宾语可用 me 或 Tom)
Would you mind my (my sister\'s) turning up the radio a little ? (作宾语可用me 或 my sister)
※ 不定式的逻辑主语
That\'s really kind ____ .
A . of you to say so B . for you to say so C . of you saying D . for you saying so
We think it dangerous ____ swimming alone in the river .
A . of him to go B . of him going C . for him to go D . for him going
［分析］答案依次为A、C。不定式的逻辑主语有两种形式：
〖思维二〗1 . 大多数情况下不定式的逻辑主语由“形容词 + for sb . to do”构成。如：
It is necessary for us to learn a second foreign language .
Abraham Lincoln thought it not right for the South to break away from the Union .
2 . 如果逻辑主语前面是表示人的性格特征的形容词如 kind、friendly、clever、wise、cruel、foolish、stupid 等时用“形容词 + of sb . to do”结构。如：
It\'s foolish of him to lend so much money to her .
It\'s kind of you to have given us so much help .
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