Unit 4-Unit 6（易错题专项训练·语法提升）英语外研版三起四年级下册（新教材）

英语外研版六三制四年级下册期中易错题（Unit4-Unit6） 专题02 语法提升·易错题专项训练 句型、语法 语法提升 高频易错点、易错点提示、小练笔、答题点拨 易错精讲 use sth. to do sth. 固定句型（Unit 4 教材 P24—P25） 高频易错点01 课本原句 1.We use plants to make food. (P24) 2.We use cotton to make clothes. (P25) 3.We can use chairs to sit on. (P25) 语法知识精讲 1.核心句型结构 肯定句：主语 + use + 某物 + to + 动词原形，用于表达“用某物做某事”，强调动作目的 同义句型：主语 + use + 某物 + for + 动词-ing形式，用于表达“用某物做某事”，强调事物用途 2.核心使用规则 句型中to为不定式符号，后面必须接动词原形，不可接动词-ing形式 句型中for为介词，后面必须接动词-ing形式，不可接动词原形 主语为第三人称单数时，use需变为三单形式uses，句型其余结构不变 3.否定句与疑问句规则 否定句：主语 + don't/doesn't + use + 某物 + to + 动词原形. 一般疑问句：Do/Does + 主语 + use + 某物 + to + 动词原形? 易错点提示 ✗ 错误1：to后接动词-ing形式，We use plants for make paper.（错误） ✓ 纠正：We use plants to make paper.（正确）/ We use plants for making paper.（正确） ✗ 错误2：for后接动词原形，We use cotton for make clothes.（错误） ✓ 纠正：We use cotton for making clothes.（正确） ✗ 错误3：主语为第三人称单数，use未变三单，My father use wood to make tables.（错误） ✓ 纠正：My father uses wood to make tables.（正确） ✗ 错误4：同义句转换时动词形式未调整，We use seeds to grow crops. 改为for句型时写成We use seeds for grow crops.（错误） ✓ 纠正：We use seeds for growing crops.（正确） 小练笔 一、单项选择 ( ) 1. We use wheat ______ bread. A. to make B. make C. making D. for make ( ) 2. People use wood ______ chairs. A. for make B. to making C. to make D. making ( ) 3. My uncle ______ a knife to cut apples. A. use B. uses C. using D. to use ( ) 4. We use leaves ______ tea. A. for making B. to making C. make D. for make ( ) 5. Which sentence is right? A. Farmers use water to water plants. B. We use cotton for make clothes. C. He use seeds to grow vegetables. 二、用所给词的适当形式填空 6.We use plants ______ (make) paper. 7.My grandma uses cotton for ______ (make) clothes. 三、句型转换 8.We use wood to make desks.（改为同义句，用for改写） ____________________________________________________________ 四、改错（写出正确句子） 9.People use wheat for make noodles. ____________________ 10.My father use a shovel to dig the earth. ____________________ 1.A。解析：固定搭配use sth. to do sth.，to后接动词原形make，故选A。 2.C。解析：固定搭配use sth. to do sth.，to后接动词原形make，故选C。 3.B。解析：主语My uncle是第三人称单数，一般现在时中谓语动词用三单形式uses，故选B。 4.A。解析：固定搭配use sth. for doing sth.，for后接动词-ing形式making，故选A。 5.A。解析：B选项for后应接making；C选项主语是第三人称单数，use应变为uses；A选项句型正确，故选A。 6.to make。解析：固定搭配use sth. to do sth.，to后接动词原形。 7.making。解析：固定搭配use sth. for doing sth.，for后接动词-ing形式。 8.We use wood for making desks.。解析：use sth. to do sth.的同义句型为use sth. for doing sth.，make变为making。 9.People use wheat to make noodles. / People use wheat for making noodles.。解析：for后接动词-ing形式，或用to+动词原形结构。 10.My father uses a shovel to dig the earth.。解析：主语My father是第三人称单数，use需变为三单形式uses。 点 拨 一般现在时第三人称单数动词变化规则（Unit 4 教材P22—P23）高频易错点02 课本原句 1.The sunflower grows tall and strong. (P22) 2.Grandpa works in the fields every day. (P23) 3.The seed grows into a plant. (P23) 4.My mother waters the plants every morning. (P23) 语法知识精讲 1.使用场景：一般现在时中，主语是第三人称单数（he/she/it/单数人名/单数事物/不可数名词）时，谓语动词必须变为第三人称单数形式（三单形式），用于描述客观规律、经常性动作、植物生长特性。 2.动词三单变化规则 一般动词：直接在词尾加-s，例：grow→grows，work→works，water→waters。 以s/x/ch/sh/o结尾的动词：词尾加-es，例：go→goes，watch→watches，wash→washes，do→does。 以辅音字母+y结尾的动词：变y为i，再加-es，例：study→studies，fly→flies。 3.特殊规则：have的三单形式是has，be动词的三单形式是is。 易错点提示 ✗ 错误1：第三人称单数主语，谓语动词用原形，未变三单 ✓ 纠正：The plant grows well.（正确），The plant grow well.（错误） ✗ 错误2：以o结尾的动词，三单形式只加-s，未加-es ✓ 纠正：He goes to the farm every weekend.（正确），He go to the farm every weekend.（错误） ✗ 错误3：辅音字母+y结尾的动词，直接加-s，未变y为i ✓ 纠正：He studies plants at school.（正确），He studys plants at school.（错误） ✗ 错误4：助动词does后，谓语动词仍用三单形式 ✓ 纠正：What does he grow in the garden?（正确），What does he grows in the garden?（错误） 小练笔 一、单项选择 ( ) 1. The sunflower ______ tall in the sun. A. grow B. grows C. growing ( ) 2. My grandpa ______ in the fields every day. A. work B. works C. working ( ) 3. The farmer ______ vegetables in the garden. A. grow B. grows C. growing ( ) 4. My mother ______ the plants every morning. A. water B. waters C. watering ( ) 5. The little bird ______ away when it sees people. A. fly B. flys C. flies 二、用所给词的适当形式填空 6.The seed ______ (grow) into a plant slowly. 7.He ______ (study) plants in the science class. 三、句型转换 8.He waters the flowers every day.（改为一般疑问句） ____________________________________________________________ 四、改错（写出正确句子） 9.The plant grow well in the earth. ____________________ 10.My father wash his clothes every weekend. ____________________ 1.B。解析：主语The sunflower是第三人称单数，一般现在时中谓语动词用三单形式grows，故选B。 2.B。解析：主语My grandpa是第三人称单数，谓语动词用三单形式works，故选B。 3.B。解析：主语The farmer是第三人称单数，谓语动词用三单形式grows，故选B。 4.B。解析：主语My mother是第三人称单数，谓语动词用三单形式waters，故选B。 5.C。解析：主语The little bird是第三人称单数，fly是以辅音字母+y结尾的动词，三单形式是flies，故选C。 6.grows。解析：主语The seed是第三人称单数，谓语动词用三单形式grows。 7.studies。解析：主语He是第三人称单数，study的三单形式是studies。 8.Does he water the flowers every day?。解析：主语he是第三人称单数，一般疑问句用Does引导，后接动词原形water。 9.The plant grows well in the earth.。解析：主语The plant是第三人称单数，谓语动词grow要变为三单形式grows。 10.My father washes his clothes every weekend.。解析：主语My father是第三人称单数，wash是以sh结尾的动词，三单形式是washes。 点 拨 There be句型核心结构与用法（Unit 5 教材P38—P39）高频易错点03 课本原句 1.There is a culture fair in our school. (P38) 2.There are many interesting stands at the fair. (P39) 3.There is a horn on the cow's head. (P39) 语法知识精讲 1.核心含义：There be句型表示“某地/某时有某人/某物”，核心遵循就近原则。 2.核心结构 肯定句：There + is/are + 名词 + 地点/时间状语. 后接单数可数名词/不可数名词，be动词用is 后接复数可数名词，be动词用are 否定句：There + isn't/aren't + 名词 + 地点/时间状语. 肯定句中的some需变为any 一般疑问句：Is/Are + there + 名词 + 地点/时间状语? 肯定回答：Yes, there is/are. 否定回答：No, there isn't/aren't. 3.就近原则：当be动词后有多个名词时，仅看距离be动词最近的名词单复数，无需考虑其他名词。 易错点提示 ✗ 错误1：忽略就近原则，根据整体名词判断be动词单复数，There are a pen and two books on the desk.（错误） ✓ 纠正：There is a pen and two books on the desk.（正确） ✗ 错误2：否定句中some未替换为any，There isn't some milk in the bottle.（错误） ✓ 纠正：There isn't any milk in the bottle.（正确） ✗ 错误3：一般疑问句回答不用there，Is there a park near our school? → Yes, it is.（错误） ✓ 纠正：Is there a park near our school? → Yes, there is.（正确） ✗ 错误4：不可数名词前误用are，There are some water in the glass.（错误） ✓ 纠正：There is some water in the glass.（正确） 小练笔 一、单项选择 ( ) 1. There ______ a Sports Day in our school every year. A. is B. are C. am ( ) 2. There ______ many beautiful flowers in the park. A. is B. are C. be ( ) 3. There ______ a book and two pens on the desk. A. is B. are C. am ( ) 4. ______ there any milk in the bottle? A. Are B. Is C. Do ( ) 5. Which sentence is right? A. There are a fair in our school. B. There isn't some rice in the bowl. C. There are many students in the classroom. 二、用is/are填空 6.There ______ a culture fair in our school this Friday. 7.There ______ some trees in the forest. 三、句型转换 8.There are some birds in the tree.（改为否定句） ____________________________________________________________ 四、改错（写出正确句子） 9.There are some water in the cup. ____________________ 10.Is there a book on the desk? Yes, it is. ____________________ 1.A。解析：a Sports Day是单数可数名词，be动词用is，故选A。 2.B。解析：many beautiful flowers是复数可数名词，be动词用are，故选B。 3.A。解析：There be句型遵循就近原则，距离be动词最近的a book是单数，be动词用is，故选A。 4.B。解析：milk是不可数名词，be动词用is，一般疑问句将is提前，故选B。 5.C。解析：A选项a fair是单数，be动词应用is；B选项否定句中some应变为any；C选项句型正确，故选C。 6.is。解析：a culture fair是单数可数名词，be动词用is。 7.are。解析：some trees是复数可数名词，be动词用are。 8.There aren't any birds in the tree.。解析：are的否定形式是aren't，肯定句中的some变为any。 9.There is some water in the cup.。解析：water是不可数名词，be动词用is。 10.Is there a book on the desk? Yes, there is.。解析：Is there引导的一般疑问句，肯定回答必须用there is。 点 拨 There be句型与have/has的用法辨析（Unit 5 教材P38—P40）高频易错点04 课本原句 1.There are many events in our school this term. (P38) 2.We have a book week in April. (P38) 3.Our school has an Art Festival every year. (P40) 语法知识精讲 There be句型和have/has均表“有”，但语义和结构完全不同，核心区别如下： 语法点 There be句型 have/has 核心语义 表存在，某地/某时有某物 表拥有，某人/某物有某物 主语 无实际主语，there为形式主语 人/物（有实际意义的主语） 结构 There be + 名词 + 地点/时间 主语 + have/has + 宾语 单复数变化 be动词随后面的名词单复数变化 have/has随主语单复数变化：主语单数/第三人称用has，主语复数/第一、二人称用have 连用规则 不可与have/has在同一句中连用 不可与There be在同一句中连用 易错点提示 ✗ 错误1：混淆“存在”和“拥有”的语义，表拥有时用There be句型，There is a new dress for me.（错误） ✓ 纠正：I have a new dress.（正确） ✗ 错误2：主语是具体的人/物时，仍用There be句型，There is our school a big playground.（错误） ✓ 纠正：Our school has a big playground.（正确） ✗ 错误3：在同一句子中同时使用There be和have/has，There is a boy has a new bike.（错误） ✓ 纠正：There is a boy with a new bike. / A boy has a new bike.（正确） ✗ 错误4：主语为第三人称单数时，have未变has，Our school have a Sports Day.（错误） ✓ 纠正：Our school has a Sports Day.（正确） 小练笔 一、单项选择 ( ) 1. Our school ______ a big Art Festival every year. A. there is B. have C. has ( ) 2. ______ many interesting stands at the culture fair. A. There are B. Have C. Has ( ) 3. I ______ a new book about plant life. A. there is B. have C. has ( ) 4. ______ a forest near our school. A. There is B. Have C. Has ( ) 5. Which sentence is right? A. There have a park near my home. B. My sister has a beautiful scarf. C. There is a girl have a new dress. 二、用There be/have/has的正确形式填空 6.We ______ a school trip next month. 7.______ some milk in the bottle. 三、句型转换 8.Our school has a culture fair.（改为同义句，用There be句型） ____________________________________________________________ 四、改错（写出正确句子） 9.There have many trees in the park. ____________________ 10.My brother have a new toy car. ____________________ 1.C。解析：主语Our school是第三人称单数，表“学校拥有艺术节”，用has，故选C。 2.A。解析：表“集市上有摊位”，强调存在，用There are，故选A。 3.B。解析：主语I是第一人称，表“我有一本书”，用have，故选B。 4.A。解析：表“学校附近有森林”，强调存在，用There is，故选A。 5.B。解析：A选项表存在应用There be句型；C选项There be和have不能连用；B选项句型正确，故选B。 6.have。解析：主语We是第一人称复数，表“我们有学校旅行”，用have。 7.There is。解析：表“瓶子里有牛奶”，强调存在，milk是不可数名词，用There is。 8.There is a culture fair in our school.。解析：have表拥有的句子，改为There be表存在的句型，补充地点状语in our school。 9.There are many trees in the park.。解析：表存在应用There be句型，many trees是复数，用There are。 10.My brother has a new toy car.。解析：主语My brother是第三人称单数，have应变为has。 点 拨 现在进行时的结构与用法（Unit 4、Unit 6 教材P22—P23、P32—P33）高频易错点05 课本原句 1.Look! They are planting seeds. (Unit4 P22) 2.I'm watering the flowers. (Unit4 P23) 3.He's wearing a T-shirt and shorts. (Unit6 P33) 4.What are you wearing? (Unit6 P32) 语法知识精讲 1.核心含义：表示此时此刻正在发生的动作或正在持续的状态，常见标志词：Look!、Listen!、now、right now。 2.核心结构 肯定句：主语 + be动词(am/is/are) + 动词-ing形式 + 其他. 一般疑问句：Be动词(am/is/are) + 主语 + 动词-ing形式 + 其他? 特殊疑问句：疑问词 + be动词(am/is/are) + 主语 + 动词-ing形式 + 其他? 3.动词-ing变化规则 一般动词：直接加-ing，例：water→watering，wear→wearing，plant→planting。 以不发音的e结尾的动词：去e加-ing，例：make→making，use→using。 以“辅元辅”结尾的重读闭音节动词：双写尾字母加-ing，例：dig→digging，run→running，swim→swimming。 易错点提示 ✗ 错误1：句子中漏掉be动词，只有动词-ing形式，He planting trees.（错误） ✓ 纠正：He is planting trees.（正确） ✗ 错误2：be动词后接动词原形/三单形式，未接-ing，She is wear a dress.（错误） ✓ 纠正：She is wearing a dress.（正确） ✗ 错误3：动词-ing变化规则错误，如不去e、不双写尾字母，dig→diging（错误），make→makeing（错误） ✓ 纠正：dig→digging（正确）；make→making（正确） ✗ 错误4：be动词与主语不匹配，Are he watering the plants?（错误） ✓ 纠正：Is he watering the plants?（正确） 小练笔 一、单项选择 ( ) 1. —What ______ you doing? —I ______ planting seeds. A. are; am B. is; am C. are; is ( ) 2. Look! The girl ______ a beautiful dress. A. is wearing B. wear C. wears ( ) 3. —Is he ______ the earth? —Yes, he is. A. dig B. digging C. digs ( ) 4. Listen! The birds ______ in the tree. A. sing B. sings C. are singing ( ) 5. Which sentence is right? A. He is dig a hole. B. She wearing a red scarf. C. We are growing flowers. 二、用所给词的适当形式填空 6.My brother ______ (dig) a hole in the garden now. 7.They ______ (wear) new uniforms for the fashion show. 三、句型转换 8.She is watering the plants.（改为一般疑问句） ____________________________________________________________ 四、改错（写出正确句子） 9.They planting trees in the park. ____________________ 10.He is dig a hole for the seed. ____________________ 1.A。解析：现在进行时结构为be+动词-ing，主语you对应的be动词是are，主语I对应的be动词是am，故选A。 2.A。解析：Look!是现在进行时的标志词，主语The girl是第三人称单数，be动词用is，wear的-ing形式是wearing，故选A。 3.B。解析：现在进行时的一般疑问句结构为Is+主语+动词-ing，dig的-ing形式是digging，故选B。 4.C。解析：Listen!是现在进行时的标志词，主语The birds是复数，be动词用are，sing的-ing形式是singing，故选C。 5.C。解析：A选项be动词后应接digging；B选项缺少be动词is；C选项句型正确，故选C。 6.is digging。解析：now是现在进行时的标志词，主语My brother是第三人称单数，be动词用is，dig的-ing形式是digging。 7.are wearing。解析：主语They是复数，be动词用are，wear的-ing形式是wearing。 8.Is she watering the plants?。解析：现在进行时的句子改为一般疑问句，将be动词is提前，主语she跟在后面。 9.They are planting trees in the park.。解析：现在进行时的句子必须有be动词，主语They对应的be动词是are。 10.He is digging a hole for the seed.。解析：be动词后接动词-ing形式，dig的-ing形式是digging。 点 拨 祈使句的用法（Unit 4、Unit 6 教材P23、P32）高频易错点06 课本原句 1.Put the seed in the earth. (Unit4 P23) 2.Don't walk on the grass. (Unit4 P23) 3.Try on this dress. (Unit6 P32) 4.Don't cut up my dress. (Unit6 P32) 语法知识精讲 1.祈使句核心含义：用于表达劝告、禁止、建议、请求，主语you通常省略，以动词原形开头，核心场景为种植动作指令、衣物穿戴动作指令。 2.肯定祈使句：动词原形 + 其他. 意为“做某事”，用于发出指令、提出建议。 Be型肯定祈使句：Be + 形容词/名词，例：Be careful. Be quiet. 3.否定祈使句：Don't + 动词原形 + 其他. 意为“不要做某事”，用于劝告、禁止。 Be型否定祈使句：Don't be + 形容词/名词，例：Don't be late. Don't be shy. 4.建议型祈使句：Let's + 动词原形 + 其他. 意为“让我们做某事吧”，用于提出建议，否定形式为Let's not + 动词原形。 5.核心规则：Don't和Let's后必须接动词原形，不能接动词-ing形式、不定式to do或三单形式。易错点提示 ✗ 错误1：Don't后接动词-ing形式/to do，未接动词原形，Don't running. / Don't to run.（错误） ✓ 纠正：Don't run.（正确） ✗ 错误2：Don't be型祈使句漏掉be动词，直接接形容词，Don't late.（错误） ✓ 纠正：Don't be late.（正确） ✗ 错误3：Let's后接动词-ing形式，未接动词原形，Let's planting trees.（错误） ✓ 纠正：Let's plant trees.（正确） ✗ 错误4：动副短语接代词宾格时，代词位置错误，Don't take off it.（错误） ✓ 纠正：Don't take it off.（正确） 小练笔 一、单项选择 ( ) 1. ______ the seed in the earth. A. Put B. Putting C. To put ( ) 2. ______ be late for the school trip. A. Don't B. Not C. Isn't ( ) 3. Let's ______ the plants together. A. water B. waters C. watering ( ) 4. Don't ______ at the little bird. A. shout B. shouts C. shouting ( ) 5. Which sentence is right? A. Don't be shy. B. Let's playing football. C. Don't to run in the classroom. 二、用所给词的适当形式填空 6.Don't ______ (be) worried. I can help you. 7.Let's not ______ (pick) the flowers in the park. 三、句型转换 8.Let's water the flowers.（改为否定句） ____________________________________________________________ 四、改错（写出正确句子） 9.Don't worried about your plants. ____________________ Let's to plant a tree together. ____________________ 1.A。解析：肯定祈使句必须以动词原形开头，故选Put。 2.A。解析：Be型否定祈使句结构为Don't be + 形容词，故选Don't。 3.A。解析：Let's后接动词原形water，故选A。 4.A。解析：Don't后接动词原形shout，故选A。 5.A。解析：B选项Let's后应接动词原形play；C选项Don't后直接接动词原形，不需要加to；A选项句型正确，故选A。 6.be。解析：Don't后接动词原形，be动词的原形是be。 7.pick。解析：Let's not后接动词原形pick。 8.Let's not water the flowers.。解析：Let's的否定形式是Let's not + 动词原形。 9.Don't be worried about your plants. / Don't worry about your plants.。解析：worried是形容词，前面需要加be动词原形；或直接用动词worry，Don't后接动词原形。 10.Let's plant a tree together.。解析：Let's后直接接动词原形，不需要加to。 点 拨 情态动词should的用法（Unit 6 教材P34—P35）高频易错点07 课本原句 1.You should wear a coat. It's cold outside. (P34) 2.You shouldn't wear shorts in winter. (P35) 3.We should take care of plants. (Unit4 拓展) 语法知识精讲 1.核心含义：情态动词should表“应该、应当”，用于给出穿衣建议、种植养护建议、表达责任义务，否定形式shouldn't（should not）表“不应该、不应当”。 2.核心结构 肯定句：主语 + should + 动词原形 + 其他. 否定句：主语 + shouldn't + 动词原形 + 其他. 一般疑问句：Should + 主语 + 动词原形 + 其他? 肯定回答：Yes, 主语 + should. 否定回答：No, 主语 + shouldn't. 3.核心规则：should/shouldn't后必须接动词原形，无人称和数的变化，无论主语是第几人称、单复数，should形式永远不变。 易错点提示 ✗ 错误1：should后接to do/doing，未接动词原形，You should to wear a coat.（错误） ✓ 纠正：You should wear a coat.（正确） ✗ 错误2：第三人称单数主语，should误用shoulds，He shoulds wear a hat.（错误） ✓ 纠正：He should wear a hat.（正确） ✗ 错误3：否定句误用don't should，You don't should run in the classroom.（错误） ✓ 纠正：You shouldn't run in the classroom.（正确） ✗ 错误4：一般疑问句肯否回答前后矛盾，Should I put on my shoes? → No, you should.（错误） ✓ 纠正：Should I put on my shoes? → No, you shouldn't.（正确） 小练笔 一、单项选择 ( ) 1. It's cold outside. You ______ wear your warm sweater. A. should B. shouldn't C. would ( ) 2. You ______ pick the flowers in the park. A. should B. shouldn't C. can ( ) 3. Should I ______ my raincoat? It's raining now. A. wear B. wearing C. to wear ( ) 4. —Should we water the plants every day? —______ A. Yes, we shouldn't. B. No, we should. C. Yes, we should. ( ) 5. We ______ take care of young plants. A. should B. shoulds C. shouldn't 二、用所给词的适当形式填空 6.You should ______ (put on) your scarf. It's windy outside. 7.We shouldn't ______ (cut) down the trees. 三、句型转换 8.You should wear a hat in the sun.（改为否定句） ____________________________________________________________ 四、改错（写出正确句子） 9.You should to eat more vegetables. ____________________ 10.He shoulds wear sports shoes for PE class. ____________________ 1.A。解析：句意为“外面很冷，你应该穿上厚毛衣”，should表“应该”，符合语境，故选A。 2.B。解析：句意为“你不应该在公园里摘花”，shouldn't表“不应该”，符合语境，故选B。 3.A。解析：should后必须接动词原形，故选wear。 4.C。解析：Should开头的一般疑问句，肯定回答为Yes, we should.，A、B肯否前后矛盾，故选C。 5.A。解析：should无人称变化，无需加s；句意为“我们应该照顾幼苗”，用should，故选A。 6.put on。解析：should后接动词原形put on。 7.cut。解析：shouldn't后接动词原形cut。 8.You shouldn't wear a hat in the sun.。解析：should的否定形式直接在后面加not，缩写为shouldn't，后接动词原形。 9.You should eat more vegetables.。解析：should后直接接动词原形，不需要加to。 10.He should wear sports shoes for PE class.。解析：should无人称和数的变化，无需加s。 点 拨 What/Where/Why引导的特殊疑问句答句逻辑（Unit4-Unit6 教材P22、P38、P40）高频易错点08 课本原句 1.What are you doing? (Unit4 P22) 2.Where are the seeds? (Unit4 P23) 3.Why are you so happy? (Unit5 P40) 语法知识精讲 1.What引导：询问“动作/事物/内容”，答句需严格呼应问句的时态和人称 现在进行时问句：What are you doing? 答句必须用be+doing结构 一般现在时问句：What do you use cotton for? 答句必须用一般现在时 2.Where引导：询问“地点/位置”，答句必须说明具体的地点/位置，呼应问句时态 3.Why引导：询问“原因”，答句必须用Because开头，说明具体原因 4.核心原则：问什么答什么，时态、人称、疑问词一一对应，不可答非所问。 易错点提示 ✗ 错误1：Why问句不用Because回答，答非所问，Why are you watering the plants? → I water the plants every day.（错误） ✓ 纠正：Why are you watering the plants? → Because they are thirsty.（正确） ✗ 错误2：What问句时态不呼应，问句现在进行时，答句用一般现在时，What are you doing? → I plant seeds.（错误） ✓ 纠正：What are you doing? → I am planting seeds.（正确） ✗ 错误3：Where问句不回答地点，答非所问，Where is your school? → It's very big.（错误） ✓ 纠正：Where is your school? → It's near the park.（正确） ✗ 错误4：混淆What和Why，What问内容用原因回答，Why问原因用内容回答 小练笔 一、单项选择 ( ) 1. What are you doing now? A. I plant seeds. B. I am planting seeds. C. I like planting seeds. ( ) 2. Why do you grow plants? A. Because they are useful. B. I grow them in the garden. C. I water them every day. ( ) 3. Where is your school? A. It's very beautiful. B. It's near the forest. C. We have a big playground. ( ) 4. Why is she wearing a coat? A. She likes the coat. B. The coat is red. C. Because it's cold outside. ( ) 5. What do you use wheat for? A. We use it to make bread. B. We grow it in the fields. C. Because it's good for us. 二、补全答句 6.—What are they doing? —________ ________ having a fashion show. 7.—Why can't you go to the party? —________ I ________ have a new dress. 8.—Where is the culture fair? —________ ________ in our school hall. 9.—What are you good at? —________ ________ good at growing flowers. 10.—________ are you so excited? —________ our school trip is coming. 1.B。解析：问句是现在进行时，答句需用be+doing结构，故选B。 2.A。解析：Why问句必须用Because回答原因，故选A。 3.B。解析：Where问句必须回答具体地点，故选B。 4.C。解析：Why问句必须用Because说明原因，故选C。 5.A。解析：What询问用途，答句需说明小麦的用途，故选A。 6.They; are。解析：现在进行时答句，主语they对应be动词are。 7.Because; don't。解析：Why问句用Because，“没有新裙子”用don't have。 8.It; is。解析：Where问句回答地点，the culture fair是单数，用It is。 9.I; am。解析：询问“你擅长什么”，答句用I am good at。 10.Why; Because。解析：答句用Because回答原因，问句用Why询问原因。 点 拨 综合训练 一、单项选择。 ( ) 1. We use cotton ______ clothes. A. to make B. make C. making ( ) 2. There ______ a Science Day in our school every May. A. is B. are C. have ( ) 3. Look! The students ______ trees in the park. A. plant B. plants C. are planting ( ) 4. My grandpa ______ in the fields every day. A. work B. works C. working ( ) 5. It's raining outside. You ______ take your raincoat. A. should B. shouldn't C. can't ( ) 6. ______ the earth for the seeds. A. Dig B. Digging C. To dig ( ) 7. There ______ many interesting events in our school this term. A. is B. are C. have ( ) 8. —What ______ your sister wearing? —She ______ wearing a pink dress. A. are; is B. is; is C. is; are ( ) 9. Our school ______ a big playground for Sports Day. A. there is B. have C. has ( ) 10. ______ there any milk in the bottle? A. Are B. Is C. Do ( ) 11. —______ is the culture fair? —It's in our classroom. A. What B. Where C. Why ( ) 12. You ______ run in the classroom. It's dangerous. A. shouldn't B. should C. can ( ) 13. The sunflower ______ tall and strong in the sun. A. grow B. grows C. growing ( ) 14. —Is he digging a hole? —______ A. Yes, he is. B. No, he is. C. Yes, he does. ( ) 15. Let's ______ the plants together. A. take care of B. takes care of C. taking care of ( ) 16. —______ are you so happy? —Because I won the game. A. What B. Where C. Why ( ) 17. There ______ a pen and three books on the desk. A. is B. are C. have ( ) 18. I ______ a new pair of shorts for the summer. A. there is B. have C. has ( ) 19. Don't ______ the trees. They are good for us. A. cut down B. cuts down C. cutting down ( ) 20. —Should we put on our sports shoes? —______ A. Yes, we should. B. No, we should. C. Yes, we do. ( ) 21. My mother ______ the plants every morning. A. water B. waters C. watering ( ) 22. There ______ any flowers in the garden in winter. A. isn't B. aren't C. are ( ) 23. —What ______ you use wood for? —We use it to make desks. A. do B. does C. are ( ) 24. ______ be late for the Art Festival. A. Don't B. Not C. Isn't ( ) 25. The little boy ______ a beautiful picture now. A. draw B. draws C. is drawing ( ) 26. We use leaves ______ make bookmarks. A. to B. for C. at ( ) 27. —______ they wearing school uniforms? —Yes, they ______. A. Are; are B. Do; do C. Is; is ( ) 28. You ______ wear shorts in winter. It's too cold. A. should B. shouldn't C. can ( ) 29. How many ______ are there in the culture fair? A. stand B. stands C. a stand ( ) 30. —What is he doing? —______ A. He waters the plants. B. He is watering the plants. C. He likes watering plants. 二、用所给词的适当形式填空 1.We use plants ______ (make) food. 2.The seed ______ (grow) into a plant slowly. 3.Look! They ______ (plant) trees in the park. 4.There ______ (be) a fashion show in our school this Friday. 5.My brother ______ (have) a new sweater for winter. 6.You should ______ (wear) a warm coat outside. 7.Don't ______ (pick) the flowers in the park. 8.—What ______ (be) you doing? —I ______ (water) the flowers. 9.There ______ (be) many beautiful flowers in the garden. 10.My uncle ______ (use) a knife to cut apples. 11.Let's ______ (go) to the school fair together. 12.The girl ______ (wear) a red dress now. 13.We shouldn't ______ (cut) down the young trees. 14.There ______ (be) some milk in the bottle. 15.My grandpa ______ (work) in the fields every day. 16.Listen! The birds ______ (sing) in the tree. 17.We use wheat for ______ (make) bread. 18.Our school ______ (have) an Art Festival every year. 19.Don't ______ (be) late for the school trip. 20.The farmer ______ (grow) vegetables in the garden every year. 三、按要求完成句子 1.We use wood to make chairs.（改为一般疑问句） _______________________________________________ 2.There is a culture fair in our school.（改为否定句） _______________________________________________ 3.He is planting seeds in the garden.（对划线部分提问） _______________________________________________ 4.The sunflower grows well in the sun.（改为一般疑问句） _______________________________________________ 5.You should wear a hat in the sun.（改为否定句） _______________________________________________ 6.我们用棉花做衣服。（汉译英） _______________________________________________ 7.There are some birds in the tree.（改为单数句） _______________________________________________ 8.Put on your new shoes.（用them改写句子） _______________________________________________ 9.They are having a fashion show.（改为否定句） _______________________________________________ 10.我们应该照顾植物。（汉译英） _______________________________________________ 11.My father works in the farm.（改为否定句） _______________________________________________ 12.We should water the plants every day.（改为一般疑问句） _______________________________________________ 13.There is a book on the desk.（改为复数句） _______________________________________________ 14.不要在草地上走。（汉译英） _______________________________________________ 15.She is wearing a beautiful dress.（改为一般疑问句） _______________________________________________ 四、语篇填空 （A） Hello! I'm Tom. I like plant life. Now I 1.__________ (plant) a sunflower seed in a pot. I 2.__________ (use) a shovel to dig the earth. I put the seed in the earth and water it every day. I know the seed 3.__________ (grow) into a big sunflower soon. We 4.__________ (use) sunflower seeds to make food. We 5.__________ (should) take care of plants. They are very useful. Look! My dad 6.__________ (water) the plants in the garden. We 7.__________ (have) a small garden in our house. There 8.__________ (be) many beautiful flowers in it. I love my garden! （B） Our school has many interesting events this term. There 1.__________ (be) a Sports Day, an Art Festival and a culture fair. Look! The students 2.__________ (get) ready for the culture fair now. We 3.__________ (have) many stands from different countries. We can 4.__________ (learn) about different culture from the fair. We 5.__________ (should) take notes carefully. There 6.__________ (be) a fashion show this Friday. The students 7.__________ (design) their own clothes now. You 8.__________ (should) come and watch the show. It will be very wonderful! （C） Today is Sunday. I go shopping with my mum. I want a new dress for the party. Look! I 1.__________ (try) on a blue dress now. It's very beautiful. My mum says I 2.__________ (should) buy it. It's cold outside, so I 3.__________ (wear) a thick coat now. There 4.__________ (be) many beautiful clothes in the shop. My mum wants a new scarf. She 5.__________ (use) it to keep warm in winter. We 6.__________ (not should) buy too many clothes. We 7.__________ (take) care of our clothes. 8.__________ (not put) your dirty clothes everywhere. We have a happy day today! 参考答案 一、单项选择题 1.A 2.A 3.C 4.B 5.A 6.A 7.B 8.B 9.C 10.B 11.B 12.A 13.B 14.A 15.A 16.C 17.A 18.B 19.A 20.A 21.B 22.B 23.A 24.A 25.C 26.A 27.A 28.B 29.B 30.B 【解析】 1.解析：固定搭配use sth. to do sth.，to后接动词原形make，故选A。 2.解析：a Science Day是单数可数名词，there be句型中be动词用is，故选A。 3.解析：Look!是现在进行时标志，主语the students是复数，结构为are planting，故选C。 4.解析：every day是一般现在时标志，主语My grandpa是第三人称单数，动词用三单形式works，故选B。 5.解析：句意为“外面在下雨，你应该带上雨衣”，should表“应该”，符合语境，故选A。 6.解析：肯定祈使句以动词原形开头，故选Dig，选A。 7.解析：many interesting events是复数，there be句型中be动词用are，故选B。 8.解析：主语your sister和she均为第三人称单数，be动词统一用is，故选B。 9.解析：主语Our school是第三人称单数，表“拥有”用has，故选C。 10.解析：milk是不可数名词，there be句型中be动词用is，一般疑问句将is提前，故选B。 11.解析：答句是地点，询问地点用Where，故选B。 12.解析：句意为“你不应该在教室里跑，很危险”，shouldn't表“不应该”，故选A。 13.解析：主语The sunflower是第三人称单数，一般现在时中动词用三单形式grows，故选B。 14.解析：Is引导的一般疑问句，肯定回答为Yes, he is.，故选A。 15.解析：Let's后接动词原形，故选take care of，选A。 16.解析：答句用Because回答原因，问句用Why询问，故选C。 17.解析：there be句型遵循就近原则，距离be动词最近的a pen是单数，be动词用is，故选A。 18.解析：主语I是第一人称，表“拥有”用have，故选B。 19.解析：Don't后接动词原形，故选cut down，选A。 20.解析：Should引导的一般疑问句，肯定回答为Yes, we should.，故选A。 21.解析：every morning是一般现在时标志，主语My mother是第三人称单数，动词用三单形式waters，故选B。 22.解析：any用于否定句，flowers是复数，there be句型的否定用aren't，故选B。 23.解析：主语you，一般现在时疑问句用助动词do，故选A。 24.解析：Be型否定祈使句用Don't开头，故选A。 25.解析：now是现在进行时标志，主语the little boy是单数，结构为is drawing，故选C。 26.解析：固定搭配use sth. to do sth.，故选to，选A。 27.解析：句中有wearing，是现在进行时，主语they对应的be动词是are，一般疑问句和回答均用are，故选A。 28.解析：句意为“冬天你不应该穿短裤，太冷了”，shouldn't表“不应该”，故选B。 29.解析：How many后接可数名词复数，stand的复数是stands，故选B。 30.解析：问句是现在进行时，答句需用be+doing结构，故选B。 二、用所给词的适当形式填空 1.to make 2.grows 3.are planting 4.is 5.has 6.wear 7.pick 8.are; am watering 9.are 10.uses 11.go 12.is wearing 13.cut 14.is 15.works 16.are singing 17.making 18.has 19.be 20.grows 【解析】 1.解析：固定搭配use sth. to do sth.，to后接动词原形。 2.解析：主语The seed是第三人称单数，一般现在时中动词用三单形式grows。 3.解析：Look!是现在进行时标志，主语they是复数，填are planting。 4.解析：a fashion show是单数，there be句型中be动词用is。 5.解析：主语My brother是第三人称单数，have的三单形式是has。 6.解析：should后接动词原形wear。 7.解析：Don't后接动词原形pick。 8.解析：主语you对应的be动词是are；答句主语I对应的be动词是am，water的-ing形式是watering。 9.解析：many beautiful flowers是复数，there be句型中be动词用are。 10.解析：主语My uncle是第三人称单数，动词用三单形式uses。 11.解析：Let's后接动词原形go。 12.解析：now是现在进行时标志，主语the girl是单数，填is wearing。 13.解析：shouldn't后接动词原形cut。 14.解析：milk是不可数名词，there be句型中be动词用is。 15.解析：every day是一般现在时标志，主语My grandpa是第三人称单数，动词用三单形式works。 16.解析：Listen!是现在进行时标志，主语The birds是复数，填are singing。 17.解析：固定搭配use sth. for doing sth.，for后接动词-ing形式making。 18.解析：主语Our school是第三人称单数，have的三单形式是has。 19.解析：Don't后接动词原形be。 20.解析：every year是一般现在时标志，主语The farmer是第三人称单数，动词用三单形式grows。 三、按要求完成句子 1.Do you use wood to make chairs? 2.There isn't a culture fair in our school. 3.What is he doing in the garden? 4.Does the sunflower grow well in the sun? 5.You shouldn't wear a hat in the sun. 6.We use cotton to make clothes. 7.There is a bird in the tree. 8.Put them on. 9.They aren't having a fashion show. 10.We should take care of plants. 11.My father doesn't work in the farm. 12.Should we water the plants every day? 13.There are some books on the desk. 14.Don't walk on the grass. 15.Is she wearing a beautiful dress? 【解析】 1.解析：主语we变you，一般现在时的一般疑问句用Do引导，后接动词原形use。 2.解析：there be句型的否定句，在is后加not，缩写为isn't。 3.解析：对正在做的动作提问，用What is he doing?。 4.解析：主语the sunflower是第三人称单数，一般疑问句用Does引导，后接动词原形grow。 5.解析：should的否定形式是shouldn't，后接动词原形。 6.解析：固定搭配use sth. to do sth.，“棉花”是cotton，“衣服”是clothes。 7.解析：复数句变单数句，are变is，some birds变a bird。 8.解析：put on是动副短语，them指代your new shoes，代词放中间。 9.解析：现在进行时的否定句，在are后加not，缩写为aren't。 10.解析：should后接动词原形，“照顾”是take care of。 11.解析：主语My father是第三人称单数，否定句用doesn't+动词原形work。 12.解析：should引导的句子变一般疑问句，将should提前到句首。 13.解析：单数句变复数句，is变are，a book变some books。 14.解析：否定祈使句用Don't+动词原形，“在草地上走”是walk on the grass。 15.解析：现在进行时的一般疑问句，将be动词is提前到句首。 四、语篇填空 （A）am planting; use; will grow; use; should; is watering; have; are （B）is; are getting; have; learn; should; will be; are designing; should （C）am trying; should; am wearing; are; uses; shouldn't; should take; Don't put 【解析】 （A） 1.解析：Now是现在进行时标志，主语I对应am planting。 2.解析：一般现在时，主语I，动词用原形use。 3.解析：soon表将来，用will grow。 4.解析：一般现在时，主语We，动词用原形use。 5.解析：情态动词should用原形，表“应该”。 6.解析：Look!是现在进行时标志，主语My dad是单数，用is watering。 7.解析：一般现在时，主语We，动词用原形have。 8.解析：many beautiful flowers是复数，there be句型用are。 （B） 1.解析：there be句型就近原则，a Sports Day是单数，用is。 2.解析：Look!和now是现在进行时标志，主语the students是复数，用are getting。 3.解析：一般现在时，主语We，动词用原形have。 4.解析：情态动词can后接动词原形learn。 5.解析：情态动词should用原形，表“应该”。 6.解析：this Friday表将来，用will be。 7.解析：now是现在进行时标志，主语the students是复数，用are designing。 8.解析：情态动词should用原形，表“应该”。 （C） 1.解析：now是现在进行时标志，主语I对应am trying。 2.解析：情态动词should用原形，表“应该”。 3.解析：now是现在进行时标志，主语I对应am wearing。 4.解析：many beautiful clothes是复数，there be句型用are。 5.解析：主语She是第三人称单数，动词用三单形式uses。 6.解析：should的否定形式是shouldn't，表“不应该”。 7.解析：情态动词should后接动词原形take。 8.解析：否定祈使句用Don't+动词原形put。 第 1 页 共 2 页 学科网（北京）股份有限公司 $