【答案区】【易错解析避雷区】 ●He has problems ______ (breathe) in the thin air on the mountain. 正确填空：breathing🎯 核心做题技巧（超实用，同类题秒解）1. 抓住固定句型： have problems/trouble/difficulty (in) doing sth. 这是八年级下册（人教版）的核心固定搭配，意思是「做某事有困难」。📌 同类易混点对比（避坑指南）结构 用法 例句 have problems doing 做某事有困难（固定搭配） He has problems learning English. It's difficult to do 做某事是困难的（不定式作主语） It's difficult to breathe here. ⚠️ 关键区分：- 主语 + have problems → 后面必须用doing- It is + 形容词 → 后面用to do（不定式）💡 举一反三（同类题直接套用）1. She has trouble ______ (sleep) at night. → sleeping2. They had difficulty ______ (finish) the work on time. → finishing3. I have problems ______ (understand) his accent. → understanding ●He is too young to go to school.(改为同义句) He is __old ___to go to school.-He is not old enough to go to school.核心技巧（必考）
1. too + 形容词 + to do 太……而不能…… = not + 反义形容词 + enough to do 不够……去做……基础拓展题（直接套用） 1. She is too short to reach the shelf.（同义句） → She is not tall enough to reach the shelf.
2. The box is too heavy for me to carry.（同义句） → The box is not light enough for me to carry.
3. He is too weak to move the chair.（同义句） → He is not strong enough to move the chair.
反向考题（enough 改 too...to）
4.He isn’t careful enough to do the work. → He is too careless to do the work.拓展题，写完可在留言区核对你的答案👇1. He is too young to drive a car.（改同义句）He ______ ______ ______ to drive a car.2. The desk is too heavy for her to move.（改同义句）The desk ______ ______ ______ for her to move.3. She isn’t tall enough to touch the tree.（改too…to）She is ______ ______ to touch the tree.4. The room is too small to hold all people.（改同义句）The room ______ ______ ______ to hold all people.5. He isn’t careful enough to do the homework.（改too…to）He is ______ ______ to do the homework.●It took me two hours to finish my homework.(改为同义句) I ___two hours ___my homework.改写：I spent two hours finishing my homework.●核心句型转换：It takes sb. + 时间 + to do sth.= sb. spends + 时间 + doing sth.英语中的四个花费4个“花费”句型 核心用法详解 1. spend（主语必须是人）
- 核心用法2（接名词）：sb. spend + 时间/钱 + on + 名词 例句：I spent 2 hours on my homework.
- 过去式：spent
2. take（主语通常是it，也可以是物/事）
- 核心用法（最常考）：It takes sb. + 时间 + to do sth. 例句：It took me 2 hours to finish my homework.
- 过去式：took
3. cost（主语必须是物/事）
- 核心用法：sth. cost (sb.) + 金钱/时间 例句：The book cost me 50 yuan.
- 过去式：cost（和原形一致）
4. pay（主语必须是人）
- 核心用法：sb. pay + 金钱 + for + 物 例句：I paid 50 yuan for the book.
- 过去式：paid
秒记区分技巧
- 人作主语：用spend / pay
- 后面接doing/on名词 → spend
- 后面接for → pay
- 物作主语：用cost
- it作形式主语：用take📚 4个“花费”句型 专项拓展题拓展题，写完可在留言区核对答案👇一、同义句改写题（核心考点）1. It took me two hours to clean my room.（改为同义句）I ______ two hours ______ my room.2. I paid 30 yuan for this new pen.（改为同义句）This new pen ______ ______ 30 yuan.3. She spent 100 yuan on the dress.（改为同义句）She ______ 100 yuan ______ the dress.4. The bike cost my father 800 yuan.（改为同义句）My father ______ 800 yuan ______ the bike.5. He spent three hours reading the storybook.（改为同义句）It ______ ______ three hours ______ ______ the storybook.二、单项选择题（易混辨析）1. — How do you come to school?— I usually walk. It ______ me about 20 minutes to walk to school.A. spends B. takes C. costs D. pays2. This beautiful dress ______ my mom 500 yuan last month.A. spent B. took C. cost D. paid3. My brother ______ two hours playing computer games every weekend.A. spends B. takes C. costs D. pays4. I ______ 20 dollars for the new movie ticket yesterday.A. spent B. took C. cost D. paid5. — How much did you ______ for the book?— 15 yuan.A. spend B. take C. cost D. pay三、用所给词的适当形式填空1. I spend half an hour ______ (do) my homework every day.2. It takes me 10 minutes ______ (walk) to the bus stop.3. The new car ______ (cost) my father a lot of money last year.4. She paid 100 yuan ______ (buy) the beautiful bag.5. He spent 20 yuan ______ the interesting storybook.（填介词）四、根据汉语提示完成句子1. 我花了两周时间读完这本小说。I ______ two weeks ______ ______ the novel.= It ______ me two weeks ______ ______ the novel.2. 这件T恤花了我80元。This T-shirt ______ ______ 80 yuan.= I ______ 80 yuan ______ this T-shirt.3. 做这项工作花了他们三天时间。It ______ ______ three days ______ ______ the work.= They ______ three days ______ the work.4. 他每天花半小时锻炼。He ______ half an hour ______ every day.= It ______ ______ half an hour ______ ______ every day.5. 我妈妈花了500元买了这件大衣。My mother ______ 500 yuan ______ the coat.= The coat ______ ______ 500 yuan.今日份语法知识点● have problem (in)doing sth.●too… to …/ not …enough…●4个花费今日份重点你学会了吗？不抛弃，不放弃，每天进步一点点！不负时光，不负彼此！我们一直在路上！加油！
