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英语语法。too..too等的用法

英语语法。too..too等的用法
英语语法。too..too等的用法

too …to …. ; not …enough to…

Step 1 看图说话利用课本P36页的图画和提示词练说too…to do 和not … enough to do 句子。如:1. The snake / dangerous/ hold . / The boy not brave

The snake is too dangerous to hold. The boy is not brave enough to hold it .

板书too…to do 和not … enough to d o并让学生明确这两个短语的中文意思是“太… 而不能…”。提醒学生观察这两个句子结构中的形容词用什么形式,to do中的do 可否变换形式。在准确理解的基础上继续看图说话。

2. The girl / short / get on the elephant. / she / not / tall .

3. The elephant / heavy / carry. / The boy / not strong.

4. The elephant / fat / go through the gate. / The gate / not wide.

5. The monkey / far away / get the bananas. / The bananas / not near.

6. The cat/ slow/ catch the bird./ It / cannot run/ fast .

Step 2 抛砖引玉

板书The snake is too dangerous to hold. The boy is not brave enough to hold it . (改为同义句)

The snake is so dangerous that the boy _________ hold it.

学生在理解的基础上探求答案,在探求答案的过程中获得新知。板书so … that + 含有can’t / couldn’t do的否定句等同于too…to do…; not …enough to do

同步操练:1. The girl is too short to get on the elephant. (改为同义句)

①The girl _________________________ to get on the elephant.

②The girl ____________that she ___________ get on the elephant.

③The elephant is so tall__ that the girl can’t get on it .

④The elephant _________ enough ______ the girl ______ get on.

⑤The elephant __________tall ______ the girl _______ get on.

完成句子后求异:

①与原句比较后发现:由too… to do… 结构转换为not … enough to do 结构时,要找到句中形容词的反义词。

③与④比较后发现:so… that + 含有can’t / couldn’t do的否定句结构

的句子,若主从句的主语不一致时,改写为too… to do… 或not … enough to do …结构时, 要在不定式to do前添for sb ,若主从句的主语一致,则不须添for sb。如:

He is so young that he can’t go to school. (改为同义句)

He too young to go to school .

He not old enough to go to school.

观察④、⑤两句可得:在too… to do… 或not … enough to do …的句子中,若to do 的宾语与句子的主语相一致时,须省略it。发散思维:若把句子改为过去时,应该怎么办?

1. The girl was too short to get on the elephant. (改为同义句)

The elephant was so tall__ that the girl couldn’t get on it .

2. He ran very fast. He couldn’t stop.

He ran too fast to stop.

He ran so fast that he couldn’t stop. (方法是句型转换时要注意时态一致。)

Step 3 链接中考

The panda is so fat that it can’t go through the hole.(改写为同一意思的句子)

The hole ________________________________ such a fat panda to go through.

The ice on the lake was so thin that people couldn’t skate on it. (改写为同一意思的句子)

The ice on the lake was not _______ enough _______ people ____________________.

Mr. King is very busy at work. He can’t take a holiday.(改为同义句) Mr. King is ______________________ take a holiday.

My grandfather is too old to travel around. (改为同义句)

My grandfather is _______ old _______ he ________________ travel around any __________.

Step 4 巩固练习

1.My brother was so clever that he could work out the problem. (改为同

义句)

My brother __________________________ work out the problem. 2.The box isn’t light enough for him to carry. (改为同义句)

The box ________________________ for him ________ carry.

3.He is very short . He can’t reach the book on the shelf.(合并为一句)

He is ________________________ reach the book on the shelf.

4.The water was so dirty. We can’t drink it. (改为同义句)

The water was too __________________________________ .

5.The water in this river is very dirty. Fishes can’t live in it.

The water in this river is ____________ that fishes ___________ in it.

6.My brother got up late yesterday. He was late for school.

My brother got up ________ that

初中英语语法之连词练习题

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初中英语语法八大时态总结

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高考英语语法专题复习动词时态和语态

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初中英语语法动词时态

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高考英语语法填空——动词的时态和语态专题

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英语语法:and的六点的用法

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Arrive late once more and you’re fired. 你再迟一次,你 就会被开除。 比较:If you work hard, you’ll succeed. 如果你努力干, 你会成功的。 (5) 有时表示对比(有类似but的意思): He is rich, and (yet) leads a modest life. 他很富有,但 却过着朴素的生活。 Robert is secretive and David is candid. 罗伯特深藏不露,而戴维则有啥说啥。 (6) 用在 good, nice, fine 等之后,表示“很”,“挺”: It’s nice and cool under the tree. 这树下很凉快。 The book is good and expensive. 这本书很贵。

高中英语语法连词

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初中英语语法知识—动词时态的解析

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