Unit5语法讲解及习题：enough _ too _ enough to _ too…to 的用法 2025-2026学年译林版八年级英语下册

译林英语八下Unit5语法讲解及习题 enough / too / enough to / too…to 的用法 一、语法讲解 1. 核心语法点1：enough 与 too 的基本用法 两者都用来描述程度，但含义和位置不同。 词 含义 用法与位置 例句 enough 表示“足够的，充足的”，指数量或程度刚好满足需求。 修饰形容词/副词时，放在形容词/副词之后；修饰名词时，放在名词之前。 He is old enough to travel alone.（他已经大到可以独自旅行了。） We have enough time.（我们有足够的时间。） too 表示“太，过于”，指数量或程度超出了需要或可接受的范围。 修饰形容词/副词时，放在形容词/副词之前。 The food is too hot to eat.（食物太烫了，没法吃。） Don't talk too loudly.（不要太大声说话。） 2. 核心语法点2：enough to 与 too…to 的复合结构 这两个结构用来连接形容词和动作，表达结果。 结构 含义 用法 例句 be + adj. + enough to do 表示“足够……去做某事”，表达肯定的结果。 形容词描述主语具备的能力或状态足以完成后面的动作。 He is patient enough to listen carefully.（他有足够的耐心去仔细倾听。） be + too + adj. + to do 表示“太……而不能做某事”，表达否定的结果。 形容词描述的程度导致后面的动作无法完成。 She is too shy to join the discussion.（她太害羞了，不敢加入讨论。） 特别注意： · too…to 本身已包含否定含义，不需要再加 not。 · 当形容词描述事物时，too…to 结构后可加 for sb. 明确动作的对象，例如：The food is too hot for me to eat. 二、语法习题 （一）用 enough 或 too 填空 1. Please wait patiently ___________ to let everyone get their turn. 2. Don't talk ___________ loudly in the dining hall. 3. Take ___________ food to feel full, but don't take ___________ much. 4. Please eat slowly. Don't eat ___________ fast. 5. Don't blow on your food if it is ___________ hot. 6. Make sure the table is clean ___________ for others to use. 7. Clear your plates to make ___________ space for others. 8. He is ___________ young to travel alone. 9. We have ___________ information about the manners in different countries. 10. There are ___________ many new things to understand at once. （二）用 enough to 或 too…to 完成句子 1. He is ___________ (patient) ___________ (listen) carefully when the students speak. 2. He is ___________ (brave) ___________ (share) his ideas. 3. He was ___________ (excited) ___________ (express) himself clearly. 4. She was ___________ (busy) ___________ (hear) Suzy's opinion. 5. She is ___________ (creative) ___________ (draw) so many amazing pictures. 6. She is ___________ (shy) ___________ (join) the discussion. 7. The old woman was ___________ (poor) ___________ (buy) food for herself. 8. Du Fu was ___________ (kind) ___________ (stop) her. 9. The travellers were ___________ (thirsty) ___________ (walk) any further. 10. He was ___________ (honest) ___________ (take) others' things. （三）单项选择 1. The problem is ___________ difficult for me ___________ solve. A. enough; to B. too; to C. so; that D. such; that 2. He is ___________ old ___________ go to school. A. enough; to B. too; to C. so; that D. such; that 3. There is ___________ food for everyone. Let's start eating. A. too B. enough C. such D. so 4. She is ___________ kind ___________ say no to others. A. too; to B. enough; to C. so; that D. such; that 5. The book is ___________ interesting ___________ I want to read it again. A. enough; to B. too; to C. so; that D. such; that （四）按要求改写句子 1. He is so young that he can't travel alone.（用 too…to 改写） _________________________________________________________________ 2. The box is so heavy that I can't carry it.（用 too…to 改写） _________________________________________________________________ 3. He is old enough to go to school.（改为同义句，用 so…that） _________________________________________________________________ 4. The food is too hot for me to eat.（改为同义句，用 so…that） _________________________________________________________________ 5. She is very kind. She won't push past you.（用 too…to 合并为一句） _________________________________________________________________ （五）短文填空 There was a man named Ji Bu in the Han Dynasty. He was (1) ___________ (trustworthy enough to / too trustworthy to) win others' praise. In the Tang Dynasty, an old woman near Du Fu's house was (2) ___________ (too poor to / poor enough to) buy food for herself, so she often took fruits from Du Fu's yard. Du Fu was (3) ___________ (too kind to / kind enough to) stop her. One hot summer day, Xu Heng and some travellers were (4) ___________ (too thirsty to / thirsty enough to) walk any further. They found a pear tree. Everyone ate a pear, but Xu Heng was (5) ___________ (too honest to / honest enough to) take the pears, even though no one owned the tree. 三、参考答案及解析 （一）用 enough 或 too 填空 1. enough（足够耐心地等待） 2. too（不要太大声说话） 3. enough; too（拿足够的食物，但不要拿太多） 4. too（不要吃得太快） 5. too（如果食物太烫） 6. enough（确保桌子足够干净） 7. enough（腾出足够的空间） 8. too（太小了不能独自旅行） 9. enough（有足够的信息） 10. too（太多新事物，无法一下子理解） （二）用 enough to 或 too…to 完成句子 1. patient enough to listen 2. brave enough to share 3. too excited to express 4. too busy to hear 5. creative enough to draw 6. too shy to join 7. too poor to buy 8. too kind to stop 9. too thirsty to walk 10. too honest to take （三）单项选择 1. B（这个问题太难了，我解不出来。too…to 表示否定） 2. A（他已经到了上学的年龄。enough to 表示肯定） 3. B（有足够的食物给每个人。enough 修饰名词 food） 4. A（她太善良了，不会拒绝别人。too…to 表示否定） 5. C（这本书太有趣了，我想再读一遍。so…that 引导结果状语从句） （四）按要求改写句子 1. He is too young to travel alone. 2. The box is too heavy for me to carry. 3. He is so old that he can go to school. 4. The food is so hot that I can't eat it. 5. She is too kind to push past you. （五）短文填空 1. trustworthy enough to（足够值得信赖，赢得了别人的赞扬） 2. too poor to（太穷了，买不起食物） 3. too kind to（太善良了，不忍心阻止她） 4. too thirsty to（太渴了，走不动了） 5. too honest to（太诚实了，不会拿别人的东西） ( 1 ) 学科网（北京）股份有限公司 $