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牛津译林版 八年级下英语 Unit5教学案
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八年级（下学期）周末辅导 Unit5 Good manners 学案（二）enough的用法作形容词 1.作定语时，既可修饰可数名词，也可修饰不可数名词。 (1) Are there enough seats for ten persons? 有没有足够十人的座位？ （2）We have enough food for a week. 我们有足够维持一周的食物。2.作表语 只有当主语是代词数词和“数词+名词”时，enough才可作表语用，如果主语是名词，enough便不能作表语用了,如： (1) That’s enough.Thank you. 够了，谢谢。 (2) Five is enough. 五个够了。 (3) Will 12 apples be enough? 十二个苹果够不够？ 如果enough之后跟其它修饰语(如不定式或for短语时),前面的主语不受限制。如：（1）The time is enough to finish it.(=There is enough time to finish it) 有足够的时间完成这一工作。 （2）The food is enough for us two.(=There is enough food for us two)有足够我们俩吃的食物。 二、 作代词，充当主语、宾语. （1）Enough has been said on this subject 关于这个问题说得已经够多的了。 （2）----Do you need some more materials? 你们还需要材料？ ----No,thanks.Enough have been supplied for us. 不要了，谢谢！我们已经够了。 三、 作副词 修饰形容词和副词，且必须放在它们之后，如： （1）This room is large enough for us to sleep in.这个房间足够大，我们可以睡.(不可说enough large) (2) He knows the situation well enough.对他情况了解得非常清楚。（不可说enough well”）四、 当enough和另一形容词同时修饰一个名词时，有两种不同的位置。 1、enough放在形容词之后，此时，enough修饰形容词时，结构为“adj.+ enough+名词”, 表示“足够…的…”, 如： （1）a large enough room一间足够大的房间 (2) a deep enough well 一口足够深的井 (3) I don’t have big enough nails to mend the cupboard.我没有足够大的钉子修理柜子。 2、enough放在形容词之前，此时，enough修饰名词，结构为“enough+adj.+名词 ”，表示“足够多的…”，如： (1) enough large room 足够大的房间 (2) enough deep well 足够深的井(3)I don’t have enough big nails to mend the cupboard. 我没有足够大的钉子修理柜子。 五、 enough之后跟介词短语”for sb”和不定式 “for sb to do sth”, 如： （1）He was lucky enough to succeed in his first attempt.他够幸运的了，第一次尝试就成功了。 （2）He spoke slowly enough for everyone to understand.他说话慢得每个人都能听懂。 （3）There isn’t enough ice cream for all the children.冰淇淋不够分给所有的小孩。 六、 enough不能与no构成否定句，只能借助not以及其他否定词，如: (1)We have not enough glasses for everyone.(不能说成no enough glasses.我们的杯子不够分给每个人。（2）We had hardly enough food to go around at the picnic.(不能说成no enough food.我们的食物刚够分给参加野餐的人。too....to 的用法too＋形容词／副词＋动词不定式"结构简称为"too...to"结构.这种结构是英语中常用的一种句型,在大多数情况下表示否定意义,在翻译时,通常可译为"太……而不能……"、"太……无法……".下面就谈谈"too...to"结构表示否定的常见句型： 1.句型I：too＋adj./adv.＋to do这个句型是too...to的最基本的常用句型.too＋形容词或副词,有时too后也可跟一个起形容词作用的过去分词.例如： 1).The boy is too young to go to school.这男孩年龄太小,不能上学. 2).The hat is too large to wear.这帽子太大,没法戴. 3).He walks too slowly to get there on time.他走得太慢,不能按时到达那儿. 4).I'm too tired to think of anything now.我太累了,什么也不能想了. 2.句型II：too...to＋to be V-ed这是"too...to"结构中不定式为被动式时的变体,如果主语是不定式动作的承受者,不定式既可以用主动式,也可以用被动式,此时用主动式虽然在形式上是主动的,但在涵义上却是被动的.例如： The tea is too hot to drink/to be drunk.茶太热,不能喝. The molecules are much too small to see/to be seen.分子太小,看不见. The shoes are too badly broken to be mended.这些鞋子破烂得不能修补. too....to ....., so....that....., enough to .....区别1.too+adj./adv. to+v.太...而不能做某事 2.adj./adv.+enough to +v.足够...而能做某事 3.so +adj./adv.+that从句 如此...以致 通常来说，这三种句型可用于同义句转换，具体如下： too...to... =not 反义词 enough to =so...that 否定句 例：He is too young to go to school. = He is not old enough to go to school. = He is so young that he can't go to school.注意：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。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 ________.My brother was so clever that he could work out the problem. (改为同义句)My brother __________________________ work out the problem.The box isn’t light enough for him to carry. (改为同义句)The box ________________________ for him ________ carry.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.The water was so dirty. We can’t drink it. (改为同义句)The water was too __________________________________ .The water in this river is very dirty. Fishes can’t live in it.The water in this river is ____________ that fishes ___________ in it.My brother got up late yesterday. He was late for school.My brother got up ________ thatso…that与too…to的转换当that引导的从句为否定式且从句主语与主句的主语相同时，so…that可转换为too…to结构；若从句主语与主句的主语不相同时，so…that可转换为too…for sb to结构。例如： She is so young that she can’t go to school. ＝She is too young to go to school. The box is so heavy that he can’t carry it. ＝The box is too heavy for him to carry.\so…that与enough to的转换 当that引导的从句为肯定式时，若从句主语与主句主语相同时，so…that可转换为enough to结构；若从句主语与主句主语不相同时，so…that可转换为enough for sb to结构。例如： Xiao Lin is so old that he can go to school. ＝Xiao Lin is old enough to go to school. The box is so light that he can carry it. ＝The box is light enough for him to carry.巩固练习1.He is old enough to go to school. He is __________ ________ that _________ _________ go to school.2. She was so weak that she couldn’t take care of her baby. She was __________ weak __________ take care of her baby. 3.She is so young that she can’t go to school. She is ________ ________ _________ go to school.4.The box is so heavy that he can’t carry it. The box is ________ _________ for him_______ carry.5.Xiao Lin is so old that he can go to school. Xiao Lin is _______ ________ _________ go to school. 6.The box is so light that he can carry it. The box is ________ _______ for him ______ carry. 7.The man is so old that he can’t go to work. The man ________ _________ old _________ go to work. 8.The desk is so heavy that I can’t move it. The desk is ________ ________ for me ____move.9.He is not old enough to do the work. He is _______ ________ ________ do the work. 10.The problem is too difficult for me to work out. The problem isn’t _______ _______ _______ _____ to work out.11. The book is interesting enough for everybody to read. The book is ________ ________ ________ everybody likes to read it. 12. The boy is so short that he can’t reach the buttons of the lift. The boy is ________ _______ _______ _______ the buttons of the lift. The boy isn’t _______ ________ ______ ______ the buttons of the lift.13.The water was so dirty that we couldn't drink it． The water was _______ dirty for us _______ drink．14.The child is so young that he can't put on his clothes． The child isn't _______ _______ _______ put on his clothes． 15.The problem is too difficult for me to work out． The problem isn't _______ ______ ________ for me to work out． 16.He is so young that he can't go to school． He is ______ young ______ go to school． 17.The box is so heavy that he can't lift it． The box is _______ heavy ______ ______ _____ lift． 18.Tom is so old that he can go to school． Tom is _______ _______ to go to school．
八年级（下学期）周末辅导 Unit5 Good manners 学案（二）enough的用法作形容词 1.作定语时，既可修饰可数名词，也可修饰不可数名词。 (1) Are there enough seats for ten persons? 有没有足够十人的座位？ （2）We have enough food for a week. 我们有足够维持一周的食物。2.作表语 只有当主语是代词数词和“数词+名词”时，enough才可作表语用，如果主语是名词，enough便不能作表语用了,如： (1) That’s enough.Thank you. 够了，谢谢。 (2) Five is enough. 五个够了。 (3) Will 12 apples be enough? 十二个苹果够不够？ 如果enough之后跟其它修饰语(如不定式或for短语时),前面的主语不受限制。如：（1）The time is enough to finish it.(=There is enough time to finish it) 有足够的时间完成这一工作。 （2）The food is enough for us two.(=There is enough food for us two)有足够我们俩吃的食物。 二、 作代词，充当主语、宾语. （1）Enough has been said on this subject 关于这个问题说得已经够多的了。 （2）----Do you need some more materials? 你们还需要材料？ ----No,thanks.Enough have been supplied for us. 不要了，谢谢！我们已经够了。 三、 作副词 修饰形容词和副词，且必须放在它们之后，如： （1）This room is large enough for us to sleep in.这个房间足够大，我们可以睡.(不可说enough large) (2) He knows the situation well enough.对他情况了解得非常清楚。（不可说enough well”）四、 当enough和另一形容词同时修饰一个名词时，有两种不同的位置。 1、enough放在形容词之后，此时，enough修饰形容词时，结构为“adj.+ enough+名词”, 表示“足够…的…”, 如： （1）a large enough room一间足够大的房间 (2) a deep enough well 一口足够深的井 (3) I don’t have big enough nails to mend the cupboard.我没有足够大的钉子修理柜子。 2、enough放在形容词之前，此时，enough修饰名词，结构为“enough+adj.+名词 ”，表示“足够多的…”，如： (1) enough large room 足够大的房间 (2) enough deep well 足够深的井(3)I don’t have enough big nails to mend the cupboard. 我没有足够大的钉子修理柜子。 五、 enough之后跟介词短语”for sb”和不定式 “for sb to do sth”, 如： （1）He was lucky enough to succeed in his first attempt.他够幸运的了，第一次尝试就成功了。 （2）He spoke slowly enough for everyone to understand.他说话慢得每个人都能听懂。 （3）There isn’t enough ice cream for all the children.冰淇淋不够分给所有的小孩。 六、 enough不能与no构成否定句，只能借助not以及其他否定词，如: (1)We have not enough glasses for everyone.(不能说成no enough glasses.我们的杯子不够分给每个人。（2）We had hardly enough food to go around at the picnic.(不能说成no enough food.我们的食物刚够分给参加野餐的人。too....to 的用法too＋形容词／副词＋动词不定式"结构简称为"too...to"结构.这种结构是英语中常用的一种句型,在大多数情况下表示否定意义,在翻译时,通常可译为"太……而不能……"、"太……无法……".下面就谈谈"too...to"结构表示否定的常见句型： 1.句型I：too＋adj./adv.＋to do这个句型是too...to的最基本的常用句型.too＋形容词或副词,有时too后也可跟一个起形容词作用的过去分词.例如： 1).The boy is too young to go to school.这男孩年龄太小,不能上学. 2).The hat is too large to wear.这帽子太大,没法戴. 3).He walks too slowly to get there on time.他走得太慢,不能按时到达那儿. 4).I'm too tired to think of anything now.我太累了,什么也不能想了. 2.句型II：too...to＋to be V-ed这是"too...to"结构中不定式为被动式时的变体,如果主语是不定式动作的承受者,不定式既可以用主动式,也可以用被动式,此时用主动式虽然在形式上是主动的,但在涵义上却是被动的.例如： The tea is too hot to drink/to be drunk.茶太热,不能喝. The molecules are much too small to see/to be seen.分子太小,看不见. The shoes are too badly broken to be mended.这些鞋子破烂得不能修补. too....to ....., so....that....., enough to .....区别1.too+adj./adv. to+v.太...而不能做某事 2.adj./adv.+enough to +v.足够...而能做某事 3.so +adj./adv.+that从句 如此...以致 通常来说，这三种句型可用于同义句转换，具体如下： too...to... =not 反义词 enough to =so...that 否定句 例：He is too young to go to school. = He is not old enough to go to school. = He is so young that he can't go to school.注意：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。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 ________.My brother was so clever that he could work out the problem. (改为同义句)My brother __________________________ work out the problem.The box isn’t light enough for him to carry. (改为同义句)The box ________________________ for him ________ carry.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.The water was so dirty. We can’t drink it. (改为同义句)The water was too __________________________________ .The water in this river is very dirty. Fishes can’t live in it.The water in this river is ____________ that fishes ___________ in it.My brother got up late yesterday. He was late for school.My brother got up ________ thatso…that与too…to的转换当that引导的从句为否定式且从句主语与主句的主语相同时，so…that可转换为too…to结构；若从句主语与主句的主语不相同时，so…that可转换为too…for sb to结构。例如： She is so young that she can’t go to school. ＝She is too young to go to school. The box is so heavy that he can’t carry it. ＝The box is too heavy for him to carry.\so…that与enough to的转换 当that引导的从句为肯定式时，若从句主语与主句主语相同时，so…that可转换为enough to结构；若从句主语与主句主语不相同时，so…that可转换为enough for sb to结构。例如： Xiao Lin is so old that he can go to school. ＝Xiao Lin is old enough to go to school. The box is so light that he can carry it. ＝The box is light enough for him to carry.巩固练习1.He is old enough to go to school. He is __________ ________ that _________ _________ go to school.2. She was so weak that she couldn’t take care of her baby. She was __________ weak __________ take care of her baby. 3.She is so young that she can’t go to school. She is ________ ________ _________ go to school.4.The box is so heavy that he can’t carry it. The box is ________ _________ for him_______ carry.5.Xiao Lin is so old that he can go to school. Xiao Lin is _______ ________ _________ go to school. 6.The box is so light that he can carry it. The box is ________ _______ for him ______ carry. 7.The man is so old that he can’t go to work. The man ________ _________ old _________ go to work. 8.The desk is so heavy that I can’t move it. The desk is ________ ________ for me ____move.9.He is not old enough to do the work. He is _______ ________ ________ do the work. 10.The problem is too difficult for me to work out. The problem isn’t _______ _______ _______ _____ to work out.11. The book is interesting enough for everybody to read. The book is ________ ________ ________ everybody likes to read it. 12. The boy is so short that he can’t reach the buttons of the lift. The boy is ________ _______ _______ _______ the buttons of the lift. The boy isn’t _______ ________ ______ ______ the buttons of the lift.13.The water was so dirty that we couldn't drink it． The water was _______ dirty for us _______ drink．14.The child is so young that he can't put on his clothes． The child isn't _______ _______ _______ put on his clothes． 15.The problem is too difficult for me to work out． The problem isn't _______ ______ ________ for me to work out． 16.He is so young that he can't go to school． He is ______ young ______ go to school． 17.The box is so heavy that he can't lift it． The box is _______ heavy ______ ______ _____ lift． 18.Tom is so old that he can go to school． Tom is _______ _______ to go to school．
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