2024年4月12日发(作者：表修竹)
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 do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
2024年4月12日发(作者：表修竹)
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 do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