Unit 4 Helping in the community（易错题专项训练・语法提升）英语人教PEP版四年级上册（新教材）

Unit4 Helping in the community 专题02 语法提升·易错题专项训练 · 内容导航 · 1. 现在进行时be+动词‑ing完整句式变换（肯定/否定/一般疑问） 2. 动词ing变化规则（规则变化、去e、双写尾字母） 3. 一般现在时often与现在进行时now语境辨析 4. What引导现在进行时特殊疑问句及答句 5. 主语人称变化（he/she/they/I）be动词匹配规则 6.综合训练 高频易错点、易错点提示、小练笔、答题点拨 易错精讲 现在进行时be + v‑ing完整变换规则 高频易错点01 现在进行时描述此时此刻正在发生的动作；核心结构：主语 + am/is/are + 动词‑ing。 1. 肯定陈述句：主语 + be + 动词‑ing 例：She is making the bed. 2. 否定句变换：be动词后面直接加not，缩写isn't / aren't。 例：She isn't making the bed. 3. 一般疑问句变换：把be动词提到句首，大写首字母。 例：Is she making the bed?  肯定回答：Yes, she is.  否定回答：No, she isn't. 易错点提示 不能丢掉be动词；后面动词必须用‑ing形式，不能写原形。 小练笔 01 一、用is / isn't / are / aren't填空 1. She ____ making the bed. 2. They ____ cleaning the room. 3. He ____ telling a story.（否定） 4. We ____ singing old songs.（否定） 5. —____ she drawing a picture? —Yes, she ____. 二、单项选择 ( )1. He ____ telling a funny story. A. am B. are C. is ( )2. —Is she making the bed? —No, she ____. A. isn't B. aren't C. don't 动词‑ing变形规则高频易错点02 1. 一般情况：动词直接加‑ing make‑making；sing‑singing；tell‑telling；clean‑cleaning 2. 以不发音e结尾：去掉e再加‑ing。例：make → making 3. 重读闭音节，辅‑元‑辅结尾：双写末尾辅音再加‑ing。例：run‑running，swim‑swimming 易错点提示 make不能写成makeing；注意区分直接加ing与去e加ing。 小练笔 02 写出动词‑ing形式 1. make ________ 2. sing ________ 3. clean ________ 4. tell ________ 5. draw ________ 二、单项选择 ( )1. Look! He is ____ the bed. A. makeing B. making C. make ( )2. They are ____ songs. A. singing B. sing C. sings often（一般现在时）与now（现在进行时）语境辨析高频易错点03 1. often：表示经常性、习惯性动作，属于一般现在时，动词随人称变化。 例句：He often helps people. 2. now / look / listen：标志此时此刻，要用现在进行时be + doing。 例句：Look! He is helping people now. 易错点提示 看到often不用ing；看到look/now必须用be+doing。 小练笔 03 用所给词适当形式填空 1. He often ____ (help) people. 2. Look! He ____ (help) old people now. 3. She often ____ (sing) songs. 4. Listen! She ____ (sing) old songs. 5. They often ____ (clean) rooms. What引导现在进行时特殊疑问句高频易错点04 1. 结构：What + be动词 + 主语 + doing? 某人正在做什么？ 2. 答句：主语 + be + 动词‑ing +其他。 例：—What is she doing? —She is making the bed. 易错点提示 问句末尾一定是doing，回答也必须使用‑ing形式。 小练笔 04 按要求改写 1. She is making the bed.（对划线部分提问） ________________________________ 2. They are cleaning the room.（对划线部分提问） ________________________________ 3. —What is he doing?（回答：他正在讲故事） ________________________________ 4. What are they doing?（回答：他们正在唱老歌） ________________________________ 5. He is telling a funny story.（改为一般疑问句） ________________________________ 主语人称变换，be动词匹配高频易错点05 1. I 搭配am；he/she/单数人名搭配is；we/they/复数人名搭配are。 例句： I am making the bed. She is making the bed. They are making the bed. 易错点提示 换主语，be动词同步跟着改变；后面动词ing形式保持不变。 小练笔 05 改写句子，变换主语 1. She is making the bed.（改为They作主语） ________________________________ 2. They are cleaning the room.（改为He作主语） ________________________________ 3. I am telling a story.（改为She作主语） ________________________________ 4. He is singing old songs.（改为We作主语） ________________________________ 5. We are drawing pictures.（改为He作主语） ________________________________ 综合训练 一、选词填空 1. She often ____ (help) people. Look! She ____ (make) the bed now. 2. They ____ (be) ____ (sing) old songs. 3. He often ____ (tell) stories. Now he ____ (tell) a funny story. 4. We ____ (be not) ____ (clean) the room. 二、单项选择 ( )1. —What ____ she doing? —She is making the bed. A. is B. are C. am ( )2. He often ____ old people. A. helps B. help C. helping ( )3. Look! They ____ songs. A. is sing B. are singing C. sing ( )4. —Is he telling a story? —Yes, he ____. A. is B. are C. does ( )5. —What are they doing? —____ A. They often clean the room. B. They clean the room. C. They are cleaning the room. ( )6. She ____ making the bed.（否定） A. isn't B. aren't C. don't ( )7. I ____ drawing a picture. A. am B. is C. are ( )8. Listen! He ____ old songs. A. sings B. sing C. is singing ( )9. They ____ cleaning the room.（否定） A. aren't B. isn't C. don't ( )10. He often ____ people in community. A. is helping B. helps C. helping 三、句型转换 1. She is making the bed.（改为否定句） ____________________________________ 2. They are cleaning the room.（改为一般疑问句） ____________________________________ 3. Is he telling a funny story?（做否定回答） ____________________________________ 4. She is making the bed.（对划线部分提问） ____________________________________ 5. He is singing old songs.（改为They作主语） ____________________________________ 6. They are drawing pictures.（改为He作主语） ____________________________________ 四、短文选词填空 help, helps, is, are, making, singing, cleaning, tell My neighbour often ____ people. Look! We are in an old people's home now. Chen Jie ____ ____ the bed. Zhang Peng and Binbin ____ ____ old songs. Some students are ____ the room. They want to ____ old people. 五、单句改错 1. She making the bed. ________ 2. They is cleaning the room. ________ 3. Look! He makeing the bed. ________ 4. He often helping old people. ________ 5. —Is he singing? —Yes, he do. ________ 六、同义句式改写 1. She is making the bed.（改写为对动作提问问句） ____________________________________ 2. They are cleaning the room.（改成否定句） ____________________________________ 3. He is telling a funny story.（改成一般疑问句） ____________________________________ 七、连词成句（大小写、标点规范） 1. she, bed, is, the, making (?) ____________________________________ 2. are, they, room, cleaning, the (.) ____________________________________ 3. often, he, people, helps (.) ____________________________________ 4. doing, what, you, are (?) ____________________________________ 八、阅读选择 Hello, I'm Amy. My neighbour is a police officer. She often helps people. Now we are in the old people's home. Look! Chen Jie is making the bed. Zhang Peng is singing old songs. Binbin and John are telling funny stories. We are all happy. We want to help more old people in our community. ( )1. Amy's neighbour often ____ people. A. help B. is helping C. helps ( )2. Where are they now? A. old people's home B. park C. school ( )3. What is Chen Jie doing? A. She is making the bed. B. She often makes the bed. C. She makes the bed. ( )4. Zhang Peng ____ old songs now. A. is singing B. sing C. sings ( )5. Binbin and John ____ funny stories. A. are telling B. tells C. telling 参考答案 小练笔 01 一、用 is /isn't /are/aren't 填空 1.is 2.are 3.isn't 4.aren't 5.Is；is 二、单项选择 1.C 2.A 小练笔 02 一、写出动词‑ing 形式 1.making 2.singing 3.cleaning 4.telling 5.drawing 二、单项选择 1.B 2.A 小练笔 03 用所给词适当形式填空 1.helps 2.is helping 3.sings 4.is singing 5.clean 小练笔 04 按要求改写 1.What is she doing? 2.What are they doing? 3.He is telling a funny story. 4.They are singing old songs. 5.Is he telling a funny story? 小练笔 05 改写句子，变换主语 1.They are making the bed. 2.He is cleaning the room. 3.She is telling a story. 4.We are singing old songs. 5.He is drawing pictures. 综合训练 一、选词填空 1.helps；is making 2.are；singing 3.tells；is telling 4.are not；cleaning 【解析】 1.often 是一般现在时，主语 she 三单用 helps；now 现在进行时，be+doing，is making。 2. 主语 they 复数，be 动词 are，sing 变为 singing。 3.often 一般现在时 he 三单 tells；now 现在进行时 is telling。 4.we 搭配 be 动词 are，否定 are not，clean 变为 cleaning。 二、单项选择 1.A 2.A 3.B 4.A 5.C 6.A 7.A 8.C 9.A 10.B 【解析】 1. 主语 she，be 动词用 is，选 A。 2.often 一般现在时，he 三单，动词 helps，选 A。 3.Look! 现在进行时，they 搭配 are singing，选 B。 4.Is he…? 一般疑问句，肯定回答 Yes, he is.，选 A。 5.What are they doing? 要用现在进行时回答，选 C。 6.she 搭配 is，否定 isn't，选 A。 7. 主语 I 搭配 be 动词 am，选 A。 8.Listen! 现在进行时，he 搭配 is singing，选 C。 9. 主语 they，否定用 aren't，选 A。 10.often 一般现在时，he 三单 helps，选 B。 三、句型转换 1.She isn't making the bed. 2.Are they cleaning the room? 3.No, he isn't. 4.What is she doing? 5.They are singing old songs. 6.He is drawing pictures. 【解析】 1. 现在进行时变否定，be 动词 is 后加 not 缩写 isn't。 2. 改为一般疑问句，be 动词 are 提到句首大写。 3.Is he…? 否定回答 No, he isn't. 4. 对动作 making the bed 提问用 What is…doing? 5. 主语换成 They，be 动词改为 are。 6. 主语换成 He，be 动词改为 is。 四、短文选词填空 1.helps 2.is；making 3.are；singing 4.cleaning 5.help 【解析】 1.often 一般现在时，neighbour 三单，填 helps。 2.Chen Jie 单数，be 动词 is，make‑making。 3.Zhang Peng and Binbin 复数，be 动词 are，sing‑singing。 4.are + 动词 ing，clean‑cleaning。 5.want to 后接动词原形 help。 五、单句改错 1. 错误：making → 改正：is making 【解析】现在进行时结构必须包含 be 动词，缺少 is。 2. 错误：is → 改正：are 【解析】主语 they 是复数，be 动词要用 are。 3. 错误：makeing → 改正：making 【解析】make 以不发音 e 结尾，变‑ing 要去掉 e，应为 making。 4. 错误：helping → 改正：helps 【解析】often 一般现在时，he 三单，谓语用 helps，不用‑ing。 5. 错误：do → 改正：is 【解析】Is 引导的一般疑问句，回答要用 be 动词 is，不用助动词 do。 六、同义句式改写 1.What is she doing? 2.They aren't cleaning the room. 3.Is he telling a funny story? 【解析】 1. 对正在做的动作提问用 What is…doing? 2. 现在进行时变否定，are 后加 not 缩写 aren't。 3. 改为一般疑问句，be 动词 is 提到句首大写。 七、连词成句 1.Is she making the bed? 2.They are cleaning the room. 3.He often helps people. 4.What are you doing? 【解析】 1. 一般疑问句，be 动词 is 放句首，末尾问号。 2. 陈述句，主语 They，be are+cleaning，句末句号。 3.often 置于实义动词前，主语 he 三单 helps。 4. 特殊疑问句 What 置于句首，be 动词 are 跟主语 you。 八、阅读选择 1.C 2.A 3.A 4.A 5.A 【导语】通读短文，区分一般现在时 often 与现在进行时 now，提取人物、动作信息作答。 1. 原文 She often helps people，主语 neighbour 三单，选 C。 2. 原文 Now we are in the old people's home，选 A。 3. 原文 Chen Jie is making the bed，现在进行时，选 A。 4. 原文 Zhang Peng is singing old songs，now 现在进行时，选 A。 5. 原文 Binbin and John are telling funny stories，复数主语用 are telling，选 A。 第 9 页 共 13 页 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $