Unit 5 Work it out（易错题专项练习·基础知识）英语外研版三起五年级下册（新教材）

Unit 5 Work it out 专题01 基础知识·易错题专项训练 1.work out 2.solve problem 3.look for 4.be ready to do sth. 5.show sb. sth. 6.go for a walk 7.find one's way back/find out 8.show sb. the way 9.help sb. do sth. 10. 字母组合or/al的发音 高频易错点、易错点提示、小练笔、答题点 拨 易错精讲 高频易错点01 Do you know any skills to work out a difficult problem?（P50) work out 解决 易错点提示 ① 核心用法：代词it/them作宾语时，必须放在work和out中间，即work it/them out，不可写成work out it；名词作宾语时，可放中间或短语末尾，如work out the problem/work the problem out。 ② 词义拓展：除“解决（问题、困难）”外，还可表示“算出（数学题）”，例：work out the math question 算出这道数学题；同义短语为solve the problem。 小练笔 ( )1. This problem is too hard. I can't ______. 第 1 页 共 18 页 学科网（北京）股份有限公司 A. work out it B. work it out C. works it out D. worked it out ( )2. He ______ the difficult problem with his deskmate's help yesterday. A. work out B. worked out C. works out D. working out ( )3. My sister often ______ the math problems quickly by herself. A. work out B. worked out C. works out D. working out ( )4. —______ you ______ the problem at last? —Yes, I found a good way to solve it. A. Did; work out B. Do; work out C. Did; worked out D. Will; work out ( )5. Don't worry. We can help you ______. A. work out it B. work it out C. works it out D. worked it out 第 1 页 共 18 页 学科网（北京）股份有限公司 ( )6. The little boy ______ not ______ the problem last night, so he cried sadly. A. do; work out B. did; work out C. does; work out D. will; work out 点拨 1. B. 情态动词can't后接动词原形，代词it作宾语需放在work和out中间，故选work it out。 2. B. 时间状语yesterday提示一般过去时，work out的过去式为worked out，句意为“昨天在同桌的帮助下，他解出了这道难题”。 3. C. 频度副词often提示一般现在时，主语My sister是第三人称单数，谓语动词用works out。 4. A. 时间状语at last提示动作已发生，一般疑问句需用助动词Did引导，后面接动词原形work out。 5. B. help sb. do sth.为固定搭配，此处用动词原形，代词it需放在work和out中间，故选work it out。 6. B. 时间状语last night提示一般过去时，否定句需用助动词did+not，后面接动词原形work out。 高频易错点02 solve problems in life with better thinking skills.(P50) solve problem 解决问题 易错点提示 ① 核心用法：solve是及物动词，意为“解决；解答”，后面直接接宾语，无需加介词；单数形式为solve the/a problem，复数形式为solve problems（泛指解决问题，贴合课本单元主题）。 ② 时态变化：solve的过去式为规则变化solved；现在分词为solving，对应课本中about solving problems的用法（介词后接动名词）。 ③ 同义替换：与work out the problem为同义短语，日常表达中可互换；区别：solve更侧重“解决系统性、有难度的问题”，work out更侧重“通过计算、推理算出/解决具体问题”。小练笔 ( )1. We should learn to ______ in our life by ourselves. A. solve problems B. solves problems C. solved problems D. solving problems ( )2. They ______ many problems in the project last week. A. solve B. solved C. solves D. solving ( )3. My brother often ______ the problem in a clever way. A. solve B. solves C. solved D. solving ( )4. —What is the story about? —It's about ______ problems in our daily life. A. solve B. solves C. solved D. solving ( )5. We ______ not ______ this big problem without our teacher's help yesterday. A. do; solve B. did; solve C. does; solve D. will; solve ( )6. The clever girl can ______ all the difficult problems quickly. A. solve B. solves C. solved D. solving 点拨 1.A. 情态动词should后接动词原形，故选solve problems，句意为“我们应该学会自己解决生活中的问题”。 2.B. 时间状语last week提示一般过去时，solve的过去式为solved，故选solved。 3.B. 频度副词often提示一般现在时，主语My brother是第三人称单数，谓语动词用solves。 4.D. 介词about后面需接动名词形式，故选solving。 5.B. 时间状语yesterday提示一般过去时，否定句需用助动词did+not，后面接动词原形solve。 6.A. 情态动词can后接动词原形，故选solve。 高频易错点03 I'm looking for my ring.（P52） look for 寻找 易错点提示 ① 核心用法：look for是固定动词短语，意为“寻找”，后面直接接寻找的人或事物，例：look for my ring 找我的戒指，look for my key 找我的钥匙。 ② 时态重点：课本原句为现在进行时，结构为am/is/are + looking for，表“正在寻找”，是本单元核心考点；过去式为looked for，一般现在时主语为三单时用looks for。 ③ 词义辨析：look for 侧重“寻找”的动作和过程，find 侧重“找到”的结果，例：I looked for my pen everywhere, but I didn't find it. 我到处找我的钢笔，但是没找到 小练笔 ( )1. —What are you doing? —I ______ my lost key. I can't find it anywhere. A. look for B. am looking for C. looked for D. looks for ( )2. My mum ______ her ring everywhere yesterday, but she didn't find it. A. look for B. looked for C. looks for D. looking for ( )3. The little girl often ______ her toys after school. A. look for B. looked for C. looks for D. looking for ( )4. —______ you ______ your book this morning? —Yes, I found it in my schoolbag finally. A. Did; look for B. Do; look for C. Will; look for D. Does; look for ( )5. Don't worry. Let's help you ______ your lost coins. A. look for B. looked for C. looks for D. looking for ( )6. He ______ not ______ his dog now, because it came back home just now. A. is; looking for B. did; look for C. do; look for D. will; look for 点拨 1.B. 问句What are you doing?提示现在进行时，结构为am/is/are+现在分词，主语I对应am，故选am looking for。 2.B. 时间状语yesterday提示一般过去时，look for的过去式为looked for。 3.C. 频度副词often提示一般现在时，主语The little girl是第三人称单数，谓语动词用looks for。 4.A. 时间状语this morning提示一般过去时，一般疑问句需用助动词Did引导，后面接动词原形look for。 5.A. help sb. do sth.为固定搭配，此处用动词原形look for。 6.A. 时间状语now提示现在进行时，否定句结构为am/is/are+not+现在分词，主语He对应is，故选is; looking for。 高频易错点04 Are you ready to go, Dad?（P52） be ready to do sth. 准备好做某事 易错点提示1 ① 核心结构：固定句型，意为“准备好做某事”，to后面必须接动词原形，不能接动名词。 ②同义拓展：同义短语为get ready to do sth.；对应搭配be ready for sth.（为某事做好准备），例：I am ready for the exam. 我为考试做好了准备。 小练笔 ( )1. ______ you ready to go to the park with us? A. Am B. Is C. Are D. Do ( )2. She ______ ready to have her English class now. A. am B. is C. are D. was ( )3. They ______ ready to start the trip yesterday morning. A. am B. is C. are D. were ( )4. —Is your brother ready ______ his homework? —Yes, he is. A. to do B. do C. doing D. did ( )5. We ______ not ready to leave the house at that time. A. am B. is C. are D. were ( )6. Please get ready ______ the game. It will start soon. A. to B. for C. at D. in 点拨 1.C. 主语为you，be动词对应are，句意为“你准备好和我们一起去公园了吗？”。 2.B. 时间状语now提示一般现在时，主语She是第三人称单数，be动词用is。 3.D. 时间状语yesterday morning提示一般过去时，主语They是复数，be动词用were。 4.A. 固定结构be ready to do sth.，to后接动词原形do，故选to do。 5.D. 时间状语at that time提示一般过去时，主语We是复数，be动词用were。 6.B. 固定搭配be/get ready for sth.，意为“为某事做好准备”，故选for。 高频易错点05 The prison guard showed him a letter by Jim Burton.（P54） show sb. sth. 给某人看某物 易错点提示 ① 双宾语结构：show是双宾语动词，show sb. sth. = show sth. to sb.，意为“给某人看某物”，其中sb.是间接宾语，sth.是直接宾语。 ② 易错重点：当直接宾语是代词it/them时，只能用show sth. to sb.结构，不能用show sb. sth.。例：正确show it to me，错误show me it。 小练笔 ( )1. Can you ______ your new storybook? A. show me B. show I C. shows me D. showed me ( )2. The guard ______ the detective the letter yesterday. A. show B. showed C. shows D. showing ( )3. My sister often ______ her new toys to me after school. A. show B. showed C. shows D. showing ( )4. —This is my new pen. Let me ______. —Wow, it's so beautiful! A. show you it B. show it to you C. shows it to you D. showed you it ( )5. He ______ not ______ me his photos yesterday, because he lost his phone. A. do; show B. did; show C. does; show D. will; show ( )6. Please ______ your homework to the teacher after class. A. show B. shows C. showed D. showing 点拨 1.A. 情态动词Can后接动词原形，动词show后接人称代词宾格me，故选show me。 2.B. 时间状语yesterday提示一般过去时，show的过去式为showed。 3.C. 频度副词often提示一般现在时，主语My sister是第三人称单数，谓语动词用shows。 4.B. 直接宾语是代词it，只能用show sth. to sb.结构；let sb. do sth.后接动词原形，故选show it to you。 5.B. 时间状语yesterday提示一般过去时，否定句需用助动词did+not，后面接动词原形show。 6.A. 此处为祈使句，用动词原形开头，故选show。 高频易错点06 Let's go for a short walk.（P56） go for a walk 去散步 易错点提示 ① go的过去式为不规则变化went，go for a walk的过去式为went for a walk；主语为第三人称单数时，一般现在时用goes for a walk。 ③ 拓展结构：同类“go for a + 名词”结构，小学常用：go for a picnic 去野餐，go for a trip 去旅行，go for a run 去跑步。 小练笔 ( )1. Let's ______ after dinner. It's good for our health. A. go for a walk B. goes for a walk C. went for a walk D. going for a walk ( )2. My grandparents ______ in the park every morning. A. go for a walk B. goes for a walk C. went for a walk D. going for a walk ( )3. We ______ for a short walk along the lake yesterday. A. go B. goes C. went D. going ( )4. —______ you ______ for a walk with me this evening? —Yes, I'd love to. A. Do; go B. Did; go C. Will; go D. Does; go ( )5. She ______ not ______ for a walk last night, because it rained heavily. A. do; go B. did; go C. does; go D. will; go ( )6. My father often ______ for a walk after work. A. go B. goes C. went D. going 点拨 1.A. Let's后接动词原形，是祈使句固定用法，故选go for a walk。 2.A. 频度状语every morning提示一般现在时，主语My grandparents是复数，谓语动词用原形go。 3.C. 时间状语yesterday提示一般过去时，go的过去式为went，故选went。 4.C. 时间状语this evening提示一般将来时，用will+动词原形结构，故选Will; go。 5.B. 时间状语last night提示一般过去时，否定句需用助动词did+not，后面接动词原形go。 6.B. 频度副词often提示一般现在时，主语My father是第三人称单数，谓语动词用goes。 高频易错点07 What did the sisters use to find their way back?（P56） Cao Chong,at six, helped to find out the weight of an elephant.（P61） find one's way back 找到回去的路 find out 查明；弄清楚 易错点提示 ①拓展搭配：find one's way to sp. 找到去某地的路，例：find my way to the park 找到去公园的路。 ②时态变化：find的过去式为found，find out的过去式为found out。 小练笔 ( )1. The two girls ______ their way back in the forest at last. A. find B. found C. finds D. finding ( )2. Can you help me ______ the way to the library? A. find B. found C. finds D. finding ( )3. Cao Chong helped to ______ the weight of the elephant in a clever way. A. find out B. found out C. finds out D. finding out ( )4. —______ you ______ who took the book yesterday? —Yes, we found out it was Tom. A. Did; find out B. Do; find out C. Will; find out D. Does; find out ( )5. The little boy ______ not ______ his way back home last night. A. do; find B. did; find C. does; find D. will; find ( )6. Let's ______ more about the clever boy from the story. A. find out B. found out C. finds out D. finding out 点拨 1.B. 语境at last提示动作已发生，用一般过去时，find的过去式为found，句意为“两个女孩最终在森林里找到了回去的路”。 2.A. help sb. do sth.为固定搭配，此处用动词原形find，故选find。 3.A. help to do sth.为固定结构，to后接动词原形，此处表示“查明大象的重量”，用find out。 4.A. 时间状语yesterday提示一般过去时，一般疑问句需用助动词Did引导，后面接动词原形find out。 5.B. 时间状语last night提示一般过去时，否定句需用助动词did+not，后面接动词原形find。 6.A. Let's后接动词原形，此处表示“弄清楚更多关于这个聪明男孩的事”，用find out。 高频易错点08 She always shows us the way.（P56） show sb. the way 给某人指路 易错点提示 ① 核心用法：固定短语，意为“给某人指路”，sb.需替换为人称代词宾格，例：show me the way 给我指路，show him the way 给他指路。 ② 拓展搭配：show sb. the way to sp. 给某人指去某地的路，例：show us the way to the zoo 给我们指去动物园的路，是小学高频考点。 小练笔 ( )1. The kind woman always ______ the way to people who get lost. A. show B. shows C. showed D. showing ( )2. Can you ______ the way to the supermarket? A. show me B. show I C. shows me D. showed me ( )3. The policeman ______ us the way to the train station yesterday. A. show B. shows C. showed D. showing ( )4. —Could you please show ______ the way to the park? —Sure, go straight and turn left. A. I B. me C. my D. mine ( )5. They ______ not ______ us the way last night, because they didn't know the place either. A. do; show B. did; show C. does; show D. will; show ( )6. Please show her the way ______ the hospital. A. to B. for C. at D. in 点拨 1.B. 频度副词always提示一般现在时，主语The kind woman是第三人称单数，谓语动词用shows。 2.A. 情态动词Can后接动词原形，动词show后接人称代词宾格me，故选show me。 3.C. 时间状语yesterday提示一般过去时，show的过去式为showed。 4.B. 动词show后接人称代词宾格作间接宾语，故选me。 5.B. 时间状语last night提示一般过去时，否定句需用助动词did+not，后面接动词原形show。 6.A. 固定搭配the way to sp.，意为“去某地的路”，故选to。 高频易错点09 Cao Chong,at six, helped to find out the weight of an elephant.（P49） help sb. do sth. 帮助某人做某事 易错点提示 ① 核心结构：固定句型，意为“帮助某人做某事”，其中to可以省略，完整结构为help sb. (to) do sth.，两种用法均可，小学阶段重点掌握省略to的用法。 ② 拓展搭配：同义结构help sb. with sth.，意为“在某方面帮助某人”，例：help me with my English 帮我学英语。 小练笔 ( )1. My mum often helps me ______ my homework after dinner. A. finish B. finishes C. finished D. finishing ( )2. We ______ a little girl find her way home last Sunday. A. help B. helped C. helps D. helping ( )3. The teacher always helps us ______ English well. A. learn B. learns C. learned D. learning ( )4. —______ your brother help you clean the room yesterday? —Yes, he did. A. Do B. Does C. Did D. Will ( )5. They ______ not ______ the old man carry the box yesterday. A. do; help B. did; help C. does; help D. will; help ( )6. I can help you ______ your math after class. A. to B. for C. with D. at 点拨 1.A. 固定结构help sb. do sth.，此处用动词原形finish，句意为“我妈妈经常晚饭后帮我完成作业”。 2.B. 时间状语last Sunday提示一般过去时，help的过去式为helped。 3.A. 固定结构help sb. do sth.，此处用动词原形learn。 4.C. 时间状语yesterday提示一般过去时，一般疑问句需用助动词Did引导。 5.B. 时间状语yesterday提示一般过去时，否定句需用助动词did+not，后面接动词原形help。 6.C. 固定搭配help sb. with sth.，意为“在某方面帮助某人”，故选with。 高频易错点10 字母组合or/al的发音（P56） Let's go for a short walk. To the hills north of York.（P56） 易错点提示 ① 核心发音规则：在重读音节中，字母组合or和al通常发/ɔː/长元音，本单元核心例词：short /ʃɔːt/、walk /wɔːk/、north /nɔːθ/、York /jɔːk/。 ② 特殊发音：or在/w/音后常发/ɜː/音，对应本单元核心词work，例：work /wɜːk/、word /wɜːd/、world /wɜːld/。 ③ 发音细节：al后接/k/音时，字母l通常不发音，仅发/ɔː/音，例：walk /wɔːk/、talk /tɔːk/，避免读出l的发音。 小练笔 选出下列单词中划线部分发音不同的一项。 ( )1. A. short B. walk C. work D. north ( )2. A. walk B. talk C. tall D. word ( )3. A. York B. short C. work D. sort ( )4. A. north B. word C. world D. work ( )5. A. walk B. warm C. short D. morning 点拨 1.C. A、B、D项中划线部分均发/ɔː/，C项work中or位于/w/后，发/ɜː/，发音不同。 2.D. A、B、C项中划线部分均发/ɔː/，D项word中or位于/w/后，发/ɜː/，发音不同。 3.C. A、B、D项中划线部分均发/ɔː/，C项work中or位于/w/后，发/ɜː/，发音不同。 4.A. B、C、D项中划线部分均发/ɜː/，A项north中or发/ɔː/，发音不同。 5.B. A、C、D项中划线部分均发/ɔː/，B项warm中ar位于/w/后，发/ɔː/但划线字母发音不同。 综合训练 一、用括号内单词的正确形式填空 1.The old building ______（date back）to the Qing Dynasty and still stands today. 2.The old movie ______（bring）me back to my happy childhood yesterday afternoon. 3.The handmade card ______（be）in the shape of a heart. It's for my mum. 4.Lots of players ______（take part in）the sports meeting last week. 5.We ______（take care of）the sick cat when we stayed at the countryside. 6.All the villagers ______（stay）safe from the flood because of the early warning. 7.Workers ______（pull down）the old factory to build a community park next month. 8.He ______（put）his warm coat into the box and left the room. 9.She ______（try）on many dresses before she picked a pink one yesterday. 10.We should ______（learn from）the heroes and try to be a better person. 二、单项选择题 ( )1. This ancient folk custom ______ to the Southern Song Dynasty and is popular till now. A. date back B. dates back C. dated back D. dating back ( )2. The old photos ______ my grandma back to her young days. A. bring B. brought C. brings D. will bring ( )3. The kites we made last week ______ in the shape of butterflies. A. is B. was C. are D. were ( )4. My best friend ______ in the English speech contest last weekend and won first prize. A. take part B. took part C. takes part D. will take part ( )5. He ______ his little brother carefully when their parents were on business. A. take care of B. took care of C. takes care of D. is taking care of ( )6. We should ______ safe from the heavy rain by staying indoors. A. stay B. stayed C. stays D. staying ( )7. They ______ down the old house last month and built a new garden. A. pull B. pulled C. pulls D. will pull ( )8. —What did you ______ into the box? —I ______ all my old toys into it. A. put; put B. put; puts C. puts; put D. puts; puts ( )9. My aunt always ______ on new shoes before she pays for them. A. try B. tried C. tries D. will try ( )10. We should ______ the rare animals from being hurt. A. protect B. protected C. protects D. protecting ( )11. Which of the following words has the same sound as "toy"? A. bed B. boy C. city D. bye 三、句型转换 1.The custom dates back to the Yuan Dynasty.（改为一般过去时） The custom ______ ______ to the Yuan Dynasty. 2.The songs bring us back to the school days.（改为一般过去时） They ______ ______ back to the school days. 3.The ring is in the shape of a star.（改为否定句） The ring ______ ______ in the shape of a star. 4.She took part in the volunteer activity last week.（改为一般疑问句） ______ she ______ part in the volunteer activity last week? 5.He put the gift into the box.（对画线部分提问） ______ ______ he ______ into the box? 6. 我们应该照顾好生病的动物。（翻译句子） We should ______ ______ ______ the sick animals. 7.They stayed safe from the typhoon.（改为一般疑问句） ______ they ______ safe from the typhoon? 8.My uncle solves the problem by himself every time.（改为一般过去时） My uncle ______ the problem by himself last time. 四、汉译英，根据中文提示补全句子 1. 这个传统可以追溯到一千多年前。 This tradition ______ ______ to more than one thousand years ago. 2. 这些老故事把爷爷带回了他的青年时代。 These old stories ______ ______ back to his youth. 3. 这个杯子呈爱心的形状。 This cup ______ ______ ______ of a heart. 4. 她上个月参加了绘画比赛。 She ______ ______ ______ the painting competition last month. 5. 妈妈们细心照顾家里的孩子们。 Mums ______ ______ ______ the kids at home carefully. 6. 我们必须保持安全，远离火灾。 We must ______ ______ ______ fire. 7. 工人们将拆除那座旧桥。 The workers ______ ______ ______ that old bridge. 8. 他把一些糖果放进了口袋里。 He ______ some candies ______ the pocket. 9. 我想试穿一下这件新外套。 I want to ______ ______ this new coat. 10. 我们应该保护森林免受砍伐。 We should ______ the forest ______ being cut down. 参考答案 一、用括号内单词的正确形式填空 1.dates back　2. brought　3. is　4. took part in　5. took care of　6. stayed　7. will pull down　8. put　9. tried　10. learn from 1.dates back 句中 “still stands today” 提示一般现在时，主语 “The old building” 是单数，谓语动词用三单形式 “dates back”。 2.brought 时间状语 “yesterday afternoon” 提示一般过去时，“bring” 的过去式为不规则变化 “brought”。 3.is 描述客观事实用一般现在时，主语 “The handmade card” 是单数，be 动词用 “is”。 4.took part in 时间状语 “last week” 提示一般过去时，“take part in” 的过去式为 “took part in”。 5.took care of 时间状语从句 “stayed” 提示一般过去时，“take care of” 的过去式为 “took care of”。 6.stayed 原因状语语境提示动作发生在过去，用一般过去时，“stay” 的过去式为 “stayed”。 7.will pull down 时间状语 “next month” 提示一般将来时，结构为 “will + 动词原形”，用 “will pull down”。 8.put 并列谓语 “left” 提示一般过去时，“put” 的过去式为原形 “put”。 9.tried 时间状语 “yesterday” 提示一般过去时，“try” 的过去式为 “tried”。 10.learn from 情态动词 “should” 后接动词原形，用 “learn from”。 二、单项选择题 1.B　2.A　3.D　4.B　5.B　6.A　7.B　8.A　9.C　10.A　11.B 1.B 主语 “This ancient folk custom” 是单数，描述客观事实用一般现在时，谓语动词用三单形式 “dates back”。 2.A 描述客观事实用一般现在时，主语 “The old photos” 是复数，谓语动词用原形 “bring”。 3.D 主语 “The kites” 是复数，定语从句 “made last week” 提示动作发生在过去，用一般过去时，be 动词用 “were”。 4.B 时间状语 “last weekend” 提示一般过去时，“take part in” 的过去式为 “took part in”。 5.B 时间状语从句 “were on business” 提示一般过去时，用 “took care of”。 6.A 情态动词 “should” 后接动词原形，用 “stay”。 7.B 时间状语 “last month” 提示一般过去时，“pull” 的过去式为 “pulled”。 8.A 第一空前有助动词 “did”，后接动词原形 “put”；第二空描述过去发生的动作，用过去式 “put”。 9.C 频度副词 “always” 提示一般现在时，主语 “My aunt” 是第三人称单数，谓语动词用三单形式 “tries”。 10.A 情态动词 “should” 后接动词原形，用 “protect”。 三、句型转换 1.dated back　2. brought us　3. is not　4. Did; take　5. What did; put　6. take good care of　7. Did; stay　8. solved 1.dated back 原句为一般现在时，改为一般过去时，需将谓语动词 “dates back” 变为过去式 “dated back”。 2.brought us 原句为一般现在时，改为一般过去时，需将谓语动词 “bring” 变为过去式 “brought”，宾语 “us” 保持不变。 3.is not 原句为含 be 动词的一般现在时，改为否定句直接在 be 动词 “is” 后加 “not”。 4.Did; take 原句为一般过去时，改为一般疑问句需用助动词 “Did” 引导，谓语动词变回原形 “take”。 5.What did; put 画线部分是具体事物，用特殊疑问词 “What” 提问；原句为一般过去时，需加助动词 “did”，谓语动词变回原形 “put”。 6.take good care of “照顾好” 译为固定短语 “take good care of”，情态动词 “should” 后接动词原形。 7.Did; stay 原句为一般过去时，改为一般疑问句需用助动词 “Did” 引导，谓语动词变回原形 “stay”。 8.solved 原句为一般现在时，改为一般过去时，需将谓语动词 “solves” 变为过去式 “solved”。 四、汉译英，根据中文提示补全句子 1.dates back　2. bring grandpa　3. is in the shape　4. took part in　5. take care of　6. stay safe from　7. will pull down　8. put; into　9. try on　10. protect; from 1.dates back “追溯到” 译为固定短语 “date back to”，主语 “This tradition” 是单数，描述客观事实用一般现在时，谓语动词用三单形式 “dates back”。 2.bring grandpa “把爷爷带回” 译为 “bring grandpa back to”，描述客观事实用一般现在时，主语 “These old stories” 是复数，谓语动词用原形 “bring”。 3.is in the shape “呈…… 的形状” 译为固定短语 “be in the shape of”，主语 “This cup” 是单数，be 动词用 “is”。 4.took part in “参加” 译为固定短语 “take part in”，时间状语 “last month” 提示一般过去时，用过去式 “took part in”。 5.take care of “照顾” 译为固定短语 “take care of”，主语 “Mums” 是复数，描述客观事实用一般现在时，谓语动词用原形。 6.stay safe from “保持安全远离……” 译为固定短语 “stay safe from”，情态动词 “must” 后接动词原形。 7.will pull down “将拆除” 译为 “will pull down”，表将来的动作用一般将来时 “will + 动词原形”。 8.put; into “把…… 放进……” 译为固定搭配 “put...into...”，描述过去发生的动作用一般过去时，“put” 的过去式为原形。 9.try on “试穿” 译为固定短语 “try on”，“want to” 后接动词原形。 10.protect; from “保护…… 免受……” 译为固定搭配 “protect...from...”，情态动词 “should” 后接动词原形。 $