单元易错知识点解析与对接练习（Unit1-8）2026-2027学年译林版英语八年级上册

八年级英语(译林版)上册 单元易错知识点解析与对接练习 八年级英语(译林版)上册 单元易错知识点解析与对接练习 (Unit 1—8) 本资料紧密贴合八年级语法体系(形容词比较级与最高级、动词不定式与动名词、一般过去时与过去进行时、现在完成时、条件状语从句等核心考点),从思维负迁移与句法机制剖析错因,搭配对接训练与答案,强化语法核心素养。 Unit 1 Friendship 【单元话题】 描述朋友的性格、品质与友谊 【语法项目】 形容词比较级;as as 结构;形容词与介词搭配 易错知识点解析 易错点 1:形容词比较级的构成错误 【典型表现】 把 taller 写成 more tall,把 friendlier 写成 more friendly,把 busier 写成 more busy,把 better 写成 gooder。 【错因分析】 汉语表示比较用“更”加形容词,不改变形容词本身,学生因此习惯在形容词前一律加 more。英语形容词比较级有两条构成路径:单音节词和部分双音节词加 -er(辅音字母加 y 结尾变 y 为 i 再加 -er,重读闭音节双写末尾辅音字母),多音节词前加 more。判断方法:先数音节,再确定用哪一种方式。 【正误对比】 【错例】This book is gooder than that one. 【正例】This book is better than that one. 【语法规则】 形容词比较级的构成:单音节词和部分双音节词加 -er(tall—taller、busy—busier、big—bigger);多音节词前加 more(more interesting、more beautiful);不规则变化需单独记忆,如 good—better、bad—worse、many/much—more、little—less、far—farther/further。 【解题判断路径】 判断时先数形容词的音节数,再确定加 -er 还是前加 more,最后检查是否属于不规则变化。 易错点 2:比较级句型中 than 与 as as 结构混用 【典型表现】 把 My friend is as tall as me 写成 as taller as me,把 She is more outgoing than her sister 写成 more outgoing as her sister。 【错因分析】 学生把 than 与 as as 都理解为“比”,因而把两者混用,出现 as taller as、more outgoing as 这类结构。两个句型的构成完全不同:as as 的中间用形容词原级,表示“和……一样”;比较级句型用形容词比较级加 than,表示“比……更”。判断方法是先确定表达的是“一样”还是“更”,再选对应结构。 【正误对比】 【错例】She is more outgoing as her sister. 【正例】She is more outgoing than her sister. 【语法规则】 as + 形容词原级 + as 表示“和……一样”,否定形式为 not so / as + 形容词原级 + as,表示“不如”。形容词比较级 + than 表示“比……更”。两种结构中 as as 之间和 than 之前都不改变形容词形式。 【解题判断路径】 判断时先确定表达的是“一样”还是“更”,再选 as as 或比较级 + than。 易错点 3:描述人物性格的形容词与介词搭配错误 【典型表现】 把 friendly to me 写成 friendly with me,把 good at English 写成 good in English,把 interested in music 写成 interested at music。 【错因分析】 汉语的“对……友好”“擅长……”“对……感兴趣”后面直接跟宾语,没有介词选择问题,学生因此随意取一个常见介词填入。英语中这类形容词的介词搭配是固定的,需要整体记忆:be friendly to、be good at、be interested in、be popular with、be afraid of。判断依据是记住整个短语,而不是只记形容词。 【正误对比】 【错例】He is popular in his classmates. 【正例】He is popular with his classmates. 【语法规则】 常用固定搭配:be friendly / kind / polite to sb;be good / weak at sth;be interested in sth;be popular with sb;be afraid of sth;be proud of sth;be angry with sb。介词后接动词时用动名词形式。 【解题判断路径】 判断时把整个短语作为单位记忆,先确认形容词,再回忆它固定搭配的介词。 易错点 4:比较级前的修饰语误用 【典型表现】 把 much taller 写成 very taller,把 much more friendly 写成 more much friendly,把 much more interesting 写成 very more interesting。 【错因分析】 学生学过 very 可以修饰形容词原级后,容易把它也用来修饰比较级,也容易把 much 放错位置。英语中 very 只能修饰形容词或副词的原级,不能修饰比较级;修饰比较级要用 much、a lot、far、a bit、even、still 等词,且这些词一律放在比较级之前。 【正误对比】 【错例】He is more taller than his brother. 【正例】He is much taller than his brother. 【语法规则】 very 修饰形容词或副词原级,不能修饰比较级。修饰比较级用 much、a lot、far、a bit、a little、even、still,位置在比较级之前,如 much taller、a lot more interesting。多音节词的比较级由 more 构成时,修饰语放在 more 之前。 【解题判断路径】 判断时先确认被修饰的是原级还是比较级,比较级只能用 much、far、even 等修饰。 易错点 5:比较对象不一致 【典型表现】 把 My hair is longer than my sister's 写成 than my sister,把 The weather in Beijing is colder than that in Shanghai 写成 than Shanghai。 【错因分析】 汉语说“我的头发比妹妹长”时,后半句可以省略“的头发”,学生直接译成英语就造成头发与妹妹相比的逻辑错误。英语比较句要求前后两项属于同类事物,否则须用 that / those 或名词所有格替代前面出现过的名词。判断方法:检查 than 前后的成分是否同类。 【正误对比】 【错例】The books in this shop are cheaper than that shop. 【正例】The books in this shop are cheaper than those in that shop. 【语法规则】 比较句要求前后两项同类。为避免重复,可用名词所有格替代(my sister's = my sister's hair);单数名词用 that 替代,复数名词用 those 替代,如 the weather in Beijing 与 that in Shanghai、the books in this shop 与 those in that shop。 【解题判断路径】 判断时检查 than 前后的成分是否属于同类事物,不同类须用 that / those 或名词所有格替代。 易错点 6:形容词与名词的语序错误 【典型表现】 把 a very kind boy 写成 a boy very kind,把 long hair 写成 hair long,把 a tall girl 写成 a girl with tall。 【错因分析】 汉语的定语常放在名词之后,如“一个男孩,很善良”“头发长长的女孩”,学生因此把英语的形容词也放在名词后面。英语中单个形容词修饰名词时须前置,语序为“限定词 + 形容词 + 名词”;只有形容词短语或介词短语作定语时才后置,如 a girl with long hair。判断方法:看修饰语是单个形容词还是短语,单个前置、短语后置。 【正误对比】 【错例】He is a boy with friendly. 【正例】He is a friendly boy. 【语法规则】 单个形容词修饰名词时前置,语序为“限定词 + 形容词 + 名词”,多个形容词并列时按“观点—大小—形状—年龄—颜色—国籍—材料”排列。形容词短语或介词短语作定语时后置,如 a girl with long hair、something important。 【解题判断路径】 判断时先看修饰语是单个形容词还是短语:单个形容词前置,短语后置。 对接练习 一、用所给词的适当形式填空 1. My best friend is (tall) than me. 2. Lily is (friendly) than her sister. 3. He is much (good) at English than me. 4. My hair is longer than (she). 5. This book is as (interesting) as that one. 6. He is very (friend) to everyone in our class. 7. She is (busy) than me every day. 8. The weather in Nanjing is hotter than in Beijing. 9. He is a (kind) boy and everyone likes him. 10. My brother is not so (tall) as me. 二、按要求改写句子 1. He is taller than his brother. (改为同义句,用 not as as 结构) 2. Lily is friendly. Lucy is friendly too. (合并为一句,用 as as) 3. Tom is 1.7 metres tall. Jack is 1.6 metres tall. (合并为一句,用比较级) 4. This book is more interesting than that one. (改为同义句,用 as as 的否定式) 5. She is more outgoing than her sister. (改为一般疑问句) 三、单句改错(诊断改错) 下面每个句子均有一处错误,请找出并改正。 1. My best friend is more tall than me. 2. My friend is as taller as me. 3. He is very friendly with me. 4. He is very taller than me. 5. My hair is longer than my sister. 6. She is more busy than me. 7. He is good in English. 8. This book is as more interesting as that one. 9. The weather in Beijing is colder than Shanghai. 10. He is a boy very kind. 四、语篇语法填空 阅读下面短文,在空白处填入 1 个适当的单词或括号内单词的正确形式。 My best friend is Li Hua. He is one year 1. (old) than me, but he is much 2. (short) than me. He is very 3. (friend) to everyone, so he is popular 4. our classmates. He is good 5. maths and he often helps me with it. My maths is not as 6. (good) as his. He is also 7. (interest) in music. He plays the piano 8. (well) than me. I think he is 9. (hard-working) than any other student in our class. I am very happy 10. (have) a friend like him. Unit 2 School life 【单元话题】 介绍学校生活与校园活动 【语法项目】 形容词最高级;数量表达;一般过去时 易错知识点解析 易错点 1:few / a few 与 little / a little 的混用 【典型表现】 把 a little money 写成 a few money,把 few students 写成 little students,把 little time 写成 few time。 【错因分析】 汉语的“几个”“一点”不区分所修饰名词的可数性,学生因此把 few 和 little 随意互换。英语中 few、a few 修饰可数名词复数,little、a little 修饰不可数名词;加 a 表示“有一些”,不加 a 表示“几乎没有”,语义上存在肯定与否定的差别。判断方法是先确定被修饰的名词是可数还是不可数,再看是否表达肯定意义。 【正误对比】 【错例】There is a little books on the desk. 【正例】There are a few books on the desk. 【语法规则】 few / a few 修饰可数名词复数,little / a little 修饰不可数名词。a few、a little 表示“有一些”,含肯定意义;few、little 表示“几乎没有”,含否定意义。作主语时,修饰可数名词复数的谓语用复数,修饰不可数名词的谓语用单数。 【解题判断路径】 判断时先确定名词的可数性,再看是否表达肯定意义。 易错点 2:形容词最高级的构成与冠词误用 【典型表现】 把 the tallest boy 写成 tallest boy,把 the most tallest 写成 the tallest,把 the best school 写成 the most good school。 【错因分析】 学生掌握了比较级的构成后,容易在最高级上重复使用 most,形成 most tallest 这类叠加,也容易漏掉最高级前必须加的 the。英语最高级的构成与比较级对应:单音节词和部分双音节词加 -est,多音节词前加 most;最高级前通常加 the。判断方法:先确定形容词的音节数,再检查冠词是否齐全。 【正误对比】 【错例】He is the tallest in the three boys. 【正例】He is the tallest of the three boys. 【语法规则】 最高级的构成:单音节词和部分双音节词加 -est(tall—tallest、big—biggest、busy—busiest);多音节词前加 most(most beautiful、most interesting);不规则变化需单独记忆,如 good—best、bad—worst、many/much—most、little—least。最高级前通常加 the,比较范围用 in(表示在某一范围内)或 of(后接具体的人或物)。 【解题判断路径】 判断时先确定比较范围是否为三者以上,再检查最高级前是否加了 the。 易错点 3:one of the + 最高级 + 复数名词结构错误 【典型表现】 把 one of the tallest students 写成 one of the tallest student,把 one of the biggest libraries 写成 one of the biggest library。 【错因分析】 学生记住了最高级前加 the,却忽略了 one of 后面接的是“多个中的一个”,名词必须用复数。这一结构中,one of 表示整体中的一员,其后的名词短语核心是复数名词,作主语时谓语用单数。判断方法:看到 one of 就检查后面的名词是否用了复数形式。 【正误对比】 【错例】She is one of the best friend of mine. 【正例】She is one of the best friends of mine. 【语法规则】 one of the + 形容词最高级 + 复数名词,表示“最……的……之一”。该结构作主语时,谓语动词用单数形式,因为真正的主语是 one。名词部分必须用复数,且常接 in / of 引导的范围。 【解题判断路径】 判断时先确定比较范围是否为三者以上,再检查最高级前是否加了 the。 易错点 4:数量比较结构 more / fewer / less than 误用 【典型表现】 把 fewer books 写成 less books,把 less water 写成 fewer water,把 less money 写成 fewer money。 【错因分析】 学生记住了比较级可以表示数量多少,却忽略了 more、fewer、less 对名词可数性的要求。英语中 more 既可修饰可数名词复数也可修饰不可数名词;fewer 只能修饰可数名词复数;less 只能修饰不可数名词。判断方法是先确定被比较的名词是可数还是不可数,再选择对应的词。 【正误对比】 【错例】There are less students in our class than theirs. 【正例】There are fewer students in our class than theirs. 【语法规则】 数量比较:more 修饰可数名词复数和不可数名词,表示“更多”;fewer 只修饰可数名词复数,表示“更少”;less 只修饰不可数名词,表示“更少”。注意可数名词作主语时谓语用复数,不可数名词作主语时谓语用单数。 【解题判断路径】 判断时先确定名词的可数性,再看是否表达肯定意义。 易错点 5:描述学校生活的短语中冠词多余或缺失 【典型表现】 把 go to school 写成 go to the school,把 have lunch 写成 have a lunch,把 in Class Three 写成 in the Class Three,把 on Monday 写成 in Monday。 【错因分析】 汉语说“去学校”“吃午饭”“在周一”时不加任何标记,学生译成英语时容易凭语感补出冠词,或者只用一个介词应付所有时间地点。英语中表示日常活动的固定短语多不加冠词,表示班级、年级时首字母大写且不加冠词,具体到星期几用 on。判断依据是这些短语属于固定搭配,需要整体记忆。 【正误对比】 【错例】We have an English class in Monday morning. 【正例】We have an English class on Monday morning. 【语法规则】 表示日常活动的固定短语不加冠词:go to school、go to bed、have breakfast / lunch / dinner、go home。班级、年级的名称首字母大写且不加冠词,如 in Class Three, Grade Eight。具体到某一天及该天的上下午用 on。 【解题判断路径】 判断时先确认该表达是否属于固定短语,固定短语中的冠词不可随意增删。 易错点 6:描述校园经历时一般现在时与一般过去时混用 【典型表现】 把 Last year I was in Grade Seven 写成 Last year I am in Grade Seven,把 We had a sports meeting last week 写成 We have a sports meeting last week。 【错因分析】 汉语动词没有时态变化,“我去年在七年级”和“我现在在八年级”用的是同一个动词形式,学生因此忽略英语动词必须体现时间。一般现在时表示现在经常发生的动作或存在的状态,一般过去时表示过去某个时间发生的动作或存在的状态。判断方法是看时间状语:last year、last week、yesterday、in 2025 等提示过去,every day、often、usually 提示现在。 【正误对比】 【错例】When I am ten years old, I moved to Nanjing. 【正例】When I was ten years old, I moved to Nanjing. 【语法规则】 一般现在时表示现在的习惯或状态,常与 every day、often、usually 连用;一般过去时表示过去发生的动作或存在的状态,常与 last year、last week、yesterday、ago、in 2025 等连用。含 be 动词的过去式:am / is 变 was,are 变 were;实义动词用过去式。 【解题判断路径】 判断时先找时间状语,再据其确定时态。 对接练习 一、用所给词的适当形式填空 1. There are (few) students in our class than in theirs. 2. I have (little) money than him. 3. He is the (tall) boy in our class. 4. This is one of the (big) libraries in our city. 5. We have (little) homework today than yesterday. 6. She is one of the best (student) in our school. 7. I have a (few) friends in my new school. 8. There is a (little) water in the bottle. 9. He is the (good) student in our class. 10. There are (many) books in our library than in theirs. 二、按要求改写句子 1. He is the tallest boy in our class. (改为同义句,用比较级) 2. Our school has more students than theirs. (改为否定句) 3. This is the biggest library in our city. (改为同义句,用 one of 结构) 4. He is taller than any other student in our class. (改为同义句,用最高级) 5. She has more friends than me. (改为一般疑问句) 三、单句改错(诊断改错) 下面每个句子均有一处错误,请找出并改正。 1. I have a few money in my pocket. 2. There are little students in the playground. 3. He is the most tallest boy in our class. 4. He is one of the tallest student in our class. 5. I have less books than him. 6. There are fewer water in this bottle. 7. He is tallest student in our class. 8. I go to the school at seven every day. 9. Last year I am in Grade Seven. 10. This is one of the biggest library in China. 四、语篇语法填空 阅读下面短文,在空白处填入 1 个适当的单词或括号内单词的正确形式。 My name is Li Ming. I am a student in Class Three, Grade Eight. Our school is one of the 1. (big) schools in our city. There are 2. (many) students in our school than in most other schools. We have a big library and there are 3. (thousand) of books in it. Our classroom is on the 4. (three) floor. There are 5. (few) students in our class than in Class One, but we have 6. (many) friends. Our English teacher is the 7. (good) teacher in our school. She is one of the most popular 8. (teacher) in our school. Last year I 9. (be) in Grade Seven. I had 10. (little) homework then than now. Unit 3 To be a good learner 【单元话题】 谈论学习方法与良好学习习惯 【语法项目】 动词不定式;动名词;疑问词 + 不定式 易错知识点解析 易错点 1:动词不定式作宾语时的形式错误 【典型表现】 把 I want to go to the library 写成 I want go to the library,把 He hopes to go 写成 He hopes to going,把 She would like to read 写成 She would like to reads。 【错因分析】 汉语说“我想去图书馆”时,两个动词直接连用,中间不加任何成分,学生因此漏掉 to;又因为已经写过 to,容易在后面再给动词加 -ing 或 -s,形成 to going、to reads 这类叠加。英语中 want、hope、plan、decide、would like、agree 等动词后接不定式作宾语,结构为“动词 + to + 动词原形”,to 后一律用原形。 【正误对比】 【错例】We plan to studying hard this term. 【正例】We plan to study hard this term. 【语法规则】 后接不定式作宾语的常用动词:want、hope、wish、plan、decide、agree、would like、would love、learn、need、try。结构为“动词 + to + 动词原形”,to 后一律用动词原形,不加 -ing 也不加 -s。 【解题判断路径】 判断时先确认前面的动词或结构是否要求接不定式,再检查 to 后是否用了动词原形。 易错点 2:后接动名词的动词与后接不定式的动词混用 【典型表现】 把 enjoy reading 写成 enjoy to read,把 wants to read 写成 wants reading,把 finished doing 写成 finished to do。 【错因分析】 学生把“喜欢做某事”“想做某事”都理解为同一类结构,因而忽略英语中不同动词对宾语形式的要求并不相同。enjoy、finish、practise、mind、keep、suggest 等动词后只能接动名词;want、hope、plan、decide、would like 等动词后只能接不定式。判断依据是把这两类动词分别成组记忆,遇到时先确认前面的动词属于哪一类。 【正误对比】 【错例】They decided going to the library together. 【正例】They decided to go to the library together. 【语法规则】 只接动名词的常用动词:enjoy、finish、practise、mind、keep、suggest、avoid、give up。只接不定式的常用动词:want、hope、wish、plan、decide、agree、would like、learn、need。介词后也接动名词。 【解题判断路径】 判断时先确认前面的动词或结构是否要求接不定式,再检查 to 后是否用了动词原形。 易错点 3:动词不定式作目的状语时的形式错误 【典型表现】 把 I get up early to catch the bus 写成 for catch the bus,把 He studies hard to pass the exam 写成 for to pass the exam。 【错因分析】 汉语用“为了”引出目的,也可以直接用“来”“去”连接两个动作,学生因此把“为了”直译成 for,或在 for 后加动词原形。英语表示目的用动词不定式,直接置于句末,不需要任何介词引导;for 后接名词或动名词,不能接动词原形。判断方法:表目的用 to do,for 后只接名词性成分。 【正误对比】 【错例】We should read more books for improve our English. 【正例】We should read more books to improve our English. 【语法规则】 动词不定式可直接作目的状语,置于句末,如 I get up early to catch the bus.。也可用 in order to do 或 so as to do,语气更正式。for 后接名词或动名词表示用途或目的,如 This knife is for cutting bread.,不能接动词原形。 【解题判断路径】 判断时先确认前面的动词或结构是否要求接不定式,再检查 to 后是否用了动词原形。 易错点 4:使役动词与感官动词后接动词形式错误 【典型表现】 把 make me study hard 写成 make me to study hard,把 Let me help you 写成 Let me to help you,把 saw him run 写成 saw him to run。 【错因分析】 学生掌握了不定式的一般形式后,容易在所有动词后都补出 to。英语中 make、let、have 等使役动词和 see、hear、watch、feel 等感官动词后接宾语补足语时,用不带 to 的动词原形,这一结构称为“省略 to 的不定式”。判断依据是记住这几个特殊动词,其后直接接动词原形。 【正误对比】 【错例】My mother let me to watch TV after dinner. 【正例】My mother let me watch TV after dinner. 【语法规则】 使役动词 make、let、have 后接宾语 + 动词原形,如 make sb do sth、let sb do sth。感官动词 see、hear、watch、feel、notice 后接宾语 + 动词原形,表示动作的全过程;接现在分词表示动作正在进行。这类结构变被动语态时,省略的 to 须还原。 【解题判断路径】 判断时先确认谓语是否为 make、let、have 或感官动词,是则用省略 to 的动词原形。 易错点 5:疑问词 + 不定式结构错误 【典型表现】 把 I don't know what to do 写成 what to doing,把 She doesn't know how to do it 写成 how to doing it,把 Can you tell me when to start 写成 when to starting。 【错因分析】 学生把疑问词加不定式当作疑问句处理,于是在 to 后也按进行时或第三人称单数变形,形成 to doing、to goes 这类错误。这一结构中,疑问词后直接接不定式,不定式一律用“to + 动词原形”。判断方法:把整个结构看作一个名词性短语,to 后永远是动词原形。 【正误对比】 【错例】Can you tell me when to starting? 【正例】Can you tell me when to start? 【语法规则】 疑问词 + 不定式结构:what / which / who / when / where / how + to + 动词原形,在句中可作宾语、主语或表语,如 I don't know what to do. / How to solve the problem is important.。这一结构相当于把宾语从句简化为短语。 【解题判断路径】 判断时先确认前面的动词或结构是否要求接不定式,再检查 to 后是否用了动词原形。 易错点 6:动名词作主语时主谓一致错误 【典型表现】 把 Reading books helps us learn a lot 写成 help us,把 Doing exercise every day is good for us 写成 are good for us。 【错因分析】 学生看到动名词短语中的名词是复数,或者看到短语本身较长,容易误判主语为复数而使用复数谓语,写出 Reading books help us 这类句子。英语中动名词短语作主语时视为一个整体概念,谓语动词用第三人称单数形式;只有当两个动名词短语并列作主语时才视为复数。判断方法:先确定句子的主语是不是动名词短语,再决定谓语形式。 【正误对比】 【错例】Learning English well need a lot of practice. 【正例】Learning English well needs a lot of practice. 【语法规则】 动名词短语作主语时,谓语动词用第三人称单数形式,如 Reading books helps us learn a lot. / Doing exercise every day is good for us.。若用并列的两个动名词短语作主语,则视为复数,谓语用复数形式。 【解题判断路径】 判断时先确认前面的动词或介词是否要求接动名词。 对接练习 一、用所给词的适当形式填空 1. I want (be) a good learner. 2. She enjoys (read) English stories. 3. He finished (do) his homework at nine. 4. My teacher makes me (study) hard. 5. Let me (help) you with your English. 6. I get up early (catch) the first bus. 7. I don't know how (use) this dictionary. 8. (read) books helps us learn a lot. 9. They decided (go) to the library together. 10. We should practise (speak) English every day. 二、按要求改写句子 1. I want to be a good learner. (改为一般疑问句) 2. He enjoys reading English stories. (改为否定句) 3. I get up early because I want to catch the bus. (用不定式改写,作目的状语) 4. I don't know what I should do. (改为同义句,用疑问词 + 不定式) 5. She wants to read more books. (改为同义句,用 would like 表达) 三、单句改错(诊断改错) 下面每个句子均有一处错误,请找出并改正。 1. I want go to the library. 2. I enjoy to read English stories. 3. She wants reading more books. 4. My teacher makes me to study hard. 5. I get up early for catch the bus. 6. I don't know what to doing. 7. Reading books help us learn a lot. 8. He finished to do his homework. 9. Let me to help you. 10. Doing exercise every day are good for us. 四、语篇语法填空 阅读下面短文,在空白处填入 1 个适当的单词或括号内单词的正确形式。 How can we become a good learner? Here are some tips. First, we should learn 1. (plan) our time well. I always make a plan 2. (start) my day. Second, we should enjoy 3. (learn) new things. Never be afraid of 4. (make) mistakes. Third, we should practise 5. (use) what we learn. For example, I practise 6. (speak) English with my classmates every day. Fourth, we should not forget 7. (ask) our teachers for help when we have problems. Our teachers are always ready 8. (help) us. Finally, we should keep 9. (read) books. Reading 10. (help) us open our eyes and learn more about the world. Unit 4 DIY fun 【单元话题】 谈论动手制作与操作步骤 【语法项目】 祈使句;情态动词 should / had better;指示代词 易错知识点解析 易错点 1:祈使句中主语多余或动词形式错误 【典型表现】 把 Cut the paper into pieces 写成 You cut the paper into pieces,把 Don't touch the wet paint 写成 Don't to touch the wet paint。 【错因分析】 汉语的祈使句主语“你”经常省略,但学生知道英语句子要有主语,于是习惯性补出 you,形成 You cut 这类结构。另一类错误是把祈使句的否定形式按不定式处理,写出 Don't to do。英语祈使句以动词原形开头,主语 you 通常不出现;否定形式在句首用 Don't,其后直接接动词原形。 【正误对比】 【错例】To open the box carefully. 【正例】Open the box carefully. 【语法规则】 祈使句以动词原形开头,主语 you 通常省略;加 please 表示礼貌时,please 可置于句首或句末,句末时前面加逗号。否定祈使句在句首用 Don't / Do not,其后接动词原形,如 Don't be late. / Don't open the door.。 【解题判断路径】 判断时先确认句子是否以动词原形开头,否定形式在句首用 Don't。 易错点 2:Let's 开头的祈使句及其否定形式错误 【典型表现】 把 Let's make a model plane 写成 Let's to make a model plane,把 Let's not be late 写成 Let's not to be late。 【错因分析】 学生把 let's 当作普通动词,按 want to do 的模式在后面加 to,忽略了 let 是使役动词,其后接省略 to 的动词原形。否定形式也有固定位置:not 放在 let's 之后、动词之前,而不是放在 let's 之前。判断依据是把 Let's do sth 和 Let's not do sth 作为固定结构记忆。 【正误对比】 【错例】Let's not making a mess in the room. 【正例】Let's not make a mess in the room. 【语法规则】 Let's = Let us,后接动词原形,表示提出建议。否定形式为 Let's not + 动词原形。肯定应答用 OK. / Good idea. / Yes, let's.,否定应答用 Sorry, I can't. / I'm afraid I can't.。 【解题判断路径】 判断时先确认句子是否以动词原形开头,否定形式在句首用 Don't。 易错点 3:情态动词 should / had better 后接动词形式错误 【典型表现】 把 You should wear old clothes 写成 should to wear,把 You had better be careful 写成 had better to be careful,把 You should not use too much glue 写成 should not to use。 【错因分析】 学生学过 want to do 后,容易把所有表示“应该”的表达都套上 to。should 和 had better 都是情态动词性质,后接动词原形;否定形式分别在 should 和 better 之后加 not,再接动词原形。had better 的否定不是 had not better,这一位置容易记错。 【正误对比】 【错例】You had better not to cut yourself. 【正例】You had better not cut yourself. 【语法规则】 should 后接动词原形,否定形式为 should not (shouldn't) + 动词原形。had better 后接动词原形,否定形式为 had better not + 动词原形,not 放在 better 之后。had better 常用来提出忠告,语气比 should 更强。 【解题判断路径】 判断时先确认谓语是否为情态动词,是则其后一律用动词原形。 易错点 4:指示代词与名词的数不一致 【典型表现】 把 These tools are very useful 写成 This tools are very useful,把 This is a hammer 写成 These is a hammer,把 these scissors 写成 this scissors。 【错因分析】 学生已经掌握 this / these 的区别,但在名词有复数标记时容易只看指示代词而忽略后面名词的数,造成 this tools、These is 这类前后不一致。另一类错误来自 scissors、trousers 等本身以复数形式出现的名词,学生容易把它们当作单数。判断方法:先确定所指对象是单个还是多个,再让指示代词、be 动词和名词三者保持一致。 【正误对比】 【错例】Those is my new brushes. 【正例】Those are my new brushes. 【语法规则】 this / that 指代单数,配 is;these / those 指代复数,配 are。指示代词、be 动词与名词三者在数上必须一致。scissors、trousers、glasses 等名词本身以复数形式出现,须配 these / those 和复数谓语。 【解题判断路径】 判断时让指示代词、be 动词与名词三者在数上保持一致。 易错点 5:表示操作步骤的动词短语中介词误用 【典型表现】 把 cut the paper into small pieces 写成 cut the paper in small pieces,把 put the glue on the paper 写成 put the glue in the paper,把 be careful with the knife 写成 be careful to the knife。 【错因分析】 汉语说“把纸剪成小块”“把胶水涂在纸上”时用的介词很灵活,学生因此随意选取 in、to 等常见介词。英语中这些搭配是固定的:cut into 、put on 、be careful with 、make sth for sb。判断依据是把整个短语作为单位记忆,而不是逐词翻译。 【正误对比】 【错例】I made a birthday card to my mother. 【正例】I made a birthday card for my mother. 【语法规则】 cut sth into pieces 表示“把某物切成小块”;put sth on sth 表示“把某物放在某物上”;be careful with sth 表示“小心某物”;make sth for sb 表示“为某人制作某物”。这些短语中的介词固定,须整体记忆。 【解题判断路径】 判断时把整个短语作为单位记忆,先确认动词,再回忆它固定搭配的介词。 易错点 6:礼貌请求句中的动词形式错误 【典型表现】 把 Could you please help me 写成 Could you please to help me,把 Would you mind passing me the scissors 写成 Would you mind to pass me the scissors。 【错因分析】 学生把 Could you please 和 Would you mind 都理解为请求句式,因而在后面的动词上都加上 to。两个句式的接续方式并不相同:Could / Would you please 后接动词原形;Would you mind 后接动名词,因为 mind 本身是只接动名词的动词。判断依据是看句子的核心动词属于哪一类。 【正误对比】 【错例】Would you please not to make a mess? 【正例】Would you please not make a mess? 【语法规则】 礼貌请求句式:Could / Would / Can you please + 动词原形,否定形式为 Could you please not + 动词原形。Would you mind + 动名词,表示“你介意做某事吗”,肯定应答(表示不介意)用 Not at all. / Of course not.,否定应答用 Sorry, I'm afraid I can't.。 【解题判断路径】 判断时先确认句式的核心动词:please 后用原形,mind 后用动名词。 对接练习 一、用所给词的适当形式填空 1. (cut) the paper into small pieces. 2. (not open) the box before you read the instructions. 3. Let's (make) a model plane together. 4. You should (wear) old clothes when you DIY. 5. You had better (be) careful with the knife. 6. (put) the glue on the paper, please. 7. Could you please (help) me with this? 8. Would you mind (pass) me the scissors? 9. These (tool) are very useful for DIY. 10. Please be careful the knife.(填介词) 二、按要求改写句子 1. You should wear old clothes. (改为否定句) 2. Open the door. (改为否定祈使句) 3. You had better be careful. (改为否定句) 4. Let's make a cake for Mum. (改为否定形式) 5. Cut the paper into pieces. (改为礼貌请求,用 Could you please 开头) 三、单句改错(诊断改错) 下面每个句子均有一处错误,请找出并改正。 1. You cut the paper into pieces. 2. Don't to touch the wet paint. 3. Let's to make a model plane together. 4. You should to wear old clothes when you DIY. 5. You had better to be careful with the knife. 6. This tools are very useful for DIY. 7. Please cut the paper in small pieces. 8. Could you please to help me with this? 9. Would you mind to pass me the scissors? 10. Put the glue in the paper. 四、语篇语法填空 阅读下面短文,在空白处填入 1 个适当的单词或括号内单词的正确形式。 DIY is fun and useful. Here are some tips for you. First, 1. (read) the instructions carefully before you start. 2. (not start) your work without reading them. Second, you should 3. (wear) old clothes, because you may get your clothes dirty. Third, 4. (be) careful with the tools. You had better 5. (not use) a sharp knife by yourself. Ask an adult 6. help. Fourth, put the glue 7. the paper, not on your hands. Fifth, 8. (keep) your work area clean. 9. (put) all the tools back in the box when you finish. Let's 10. (try) to make something by ourselves this weekend! Unit 5 Wild animals 【单元话题】 介绍野生动物及其生存现状,树立保护意识 【语法项目】 一般过去时;过去进行时;时间状语 易错知识点解析 易错点 1:不规则动词过去式错误 【典型表现】 把 saw 写成 see,把 bought 写成 buyed,把 went 写成 goed,把 took 写成 taked。 【错因分析】 学生掌握了规则动词加 -ed 的构成后,容易对所有动词一律套用,忽略 see、buy、go、take 等常用动词的过去式属于不规则变化。另一类错误是虽然知道要用过去时,但只记得加 -ed 而想不起不规则形式。判断方法:先确认句中有表示过去的时间状语,再回忆该动词的过去式;不规则动词须成组记忆。 【正误对比】 【错例】She taked many photos of the animals. 【正例】She took many photos of the animals. 【语法规则】 规则动词过去式加 -ed(以 e 结尾加 -d;辅音字母加 y 结尾变 y 为 i 加 -ed;重读闭音节双写末尾辅音字母加 -ed)。不规则动词须单独记忆,常用如 see—saw、buy—bought、go—went、take—took、eat—ate、tell—told、climb—climbed(规则)。 【解题判断路径】 判断时先看有无过去时间状语,再回忆该动词的过去式形式。 易错点 2:过去进行时的构成错误 【典型表现】 把 I was watching TV 写成 I was watch TV,把 They were playing football 写成 They was playing football,把 He was reading 写成 He were reading。 【错因分析】 学生掌握了现在进行时的结构后,容易在换成过去时时只改 be 动词而忘记保留 -ing,或者忽略 was 与 were 的人称区别。过去进行时的结构是 was / were + 现在分词:主语为 I、he、she、it 或单数名词时用 was,主语为 you、we、they 或复数名词时用 were。两部分缺一不可。 【正误对比】 【错例】She was write a report about wild animals. 【正例】She was writing a report about wild animals. 【语法规则】 过去进行时的结构为 was / were + 现在分词。主语为 I、he、she、it 或单数名词时用 was;主语为 you、we、they 或复数名词时用 were。否定形式在 be 动词后加 not,疑问形式把 be 动词提至句首。 【解题判断路径】 判断时先看时间状语是否表示“某一时刻正在”,再按主语确定 was 或 were。 易错点 3:一般过去时与过去进行时混用 【典型表现】 把 At eight o'clock last night, I was reading a book 写成 I read a book,把 I saw a panda last Sunday 写成 I was seeing a panda。 【错因分析】 学生尚未建立“动作是点还是段”的意识,容易在两个时态间随意选择。一般过去时表示过去某个时间发生并结束的动作,是时间点上的动作;过去进行时表示过去某个时刻正在进行的动作,是时间段上的动作。判断方法:看时间状语是表示“在某一时刻正在”还是“在某一时间发生”,前者用过去进行时,后者用一般过去时。 【正误对比】 【错例】While I was reading, my brother watches TV. 【正例】While I was reading, my brother was watching TV. 【语法规则】 一般过去时表示过去发生并结束的动作,常与 yesterday、last week、ago、in 2025 等连用。过去进行时表示过去某一时刻正在进行的动作,常与 at eight o'clock last night、at that time、this time yesterday 等连用。when 引导的从句常用一般过去时表示短暂动作,while 引导的从句常用过去进行时表示持续动作。 【解题判断路径】 判断时先看时间状语是否表示“某一时刻正在”,再按主语确定 was 或 were。 易错点 4:野生动物名词的复数形式错误 【典型表现】 把 deer 写成 deers,把 sheep 写成 sheeps,把 wolves 写成 wolfs,把 kangaroos 写成 kangarooes。 【错因分析】 学生掌握了加 -s 的一般规则后,容易对所有动物名词一律套用,忽略 deer、sheep 等单复数同形,也忽略 wolf、leaf 等以 f / fe 结尾须变 f 为 v 再加 -es 的规则。判断方法:先确认该名词是否属于单复数同形,再看词尾是否需要特殊变化。 【正误对比】 【错例】The zoo has two kangarooes. 【正例】The zoo has two kangaroos. 【语法规则】 单复数同形的名词:deer、sheep、fish(指同种鱼时)、Chinese、Japanese。以 f / fe 结尾的名词多数变 f / fe 为 v 再加 -es,如 wolf—wolves、leaf—leaves、knife—knives。以 o 结尾的名词多数加 -s,如 kangaroo—kangaroos、photo—photos、zoo—zoos。 【解题判断路径】 判断时先确认该名词是否属于单复数同形,再检查词尾是否需要特殊变化。 易错点 5:表示濒危与保护的短语搭配错误 【典型表现】 把 in danger 写成 in the danger,把 take action 写成 take actions,把 the number of wild animals is getting smaller 写成 getting less。 【错因分析】 汉语说“处于危险中”“采取行动”“数量越来越少”时没有固定搭配的约束,学生因此凭语感补出冠词或加 -s,也容易把“数量少”直接译成 less。英语中 in danger、take action 是固定短语,不加冠词也不变复数;表示数量增减用 large / small 修饰 number,而不用 many / much 或 less。 【正误对比】 【错例】We should do something to protect the animals in dangerous. 【正例】We should do something to protect the animals in danger. 【语法规则】 固定短语:be in danger(处于危险中)、take action(采取行动)、protect from (保护……免受……)。表示数量的多少用 the number of is large / small,数量增减用 get larger / smaller;a number of 意为“许多”,作主语时谓语用复数。 【解题判断路径】 判断时先确认该表达是否属于固定短语,固定短语不加冠词也不变复数。 易错点 6:过去时间状语的误用 【典型表现】 把 three days ago 写成 three days before,把 last Sunday 写成 in last Sunday,把 two days ago 写成 ago two days。 【错因分析】 汉语的“三天前”“上周日”位置和形式都比较灵活,学生因此把 ago 与 before 混用,也容易在 last Sunday 前多余地加介词。英语中 ago 表示“从现在算起的若干时间以前”,放在时间量之后,且只与一般过去时连用;before 表示“从过去某时算起以前”,常与过去完成时连用。last 构成的时间状语前不加介词。 【正误对比】 【错例】I have finished my homework yesterday. 【正例】I finished my homework yesterday. 【语法规则】 ago 表示“从现在起若干时间以前”,置于时间量之后,与一般过去时连用,如 two days ago、three years ago。before 表示“从过去某时起以前”,常与过去完成时连用。last week / last Sunday / yesterday 等时间状语前不加介词。yesterday、last week 等明确过去时间不与现在完成时连用。 【解题判断路径】 判断时先确认时间参照点是现在还是过去,再选择 ago 或 before。 对接练习 一、用所给词的适当形式填空 1. I (see) a panda in the zoo last Sunday. 2. He (buy) a book about wild animals yesterday. 3. We (go) to the zoo last week. 4. I (watch) TV at eight o'clock last night. 5. They (play) football at five yesterday afternoon. 6. While I (read), my brother was watching TV. 7. There are many (deer) in the forest. 8. The number of wild animals is getting (small). 9. I saw a panda in the zoo three days .(填时间副词) 10. Many wild animals are danger now.(填介词) 二、按要求改写句子 1. I saw a panda in the zoo last Sunday. (改为一般疑问句) 2. He bought a book about wild animals. (改为否定句) 3. I was watching TV at eight o'clock last night. (对划线部分提问) 4. They were playing football at five yesterday. (改为一般疑问句) 5. I read a book at eight o'clock last night. (用过去进行时改写) 三、单句改错(诊断改错) 下面每个句子均有一处错误,请找出并改正。 1. I see a panda in the zoo yesterday. 2. He buyed a book about wild animals. 3. I was watch TV at eight last night. 4. They was playing football at five yesterday. 5. There are many deers in the forest. 6. Many wild animals are in the danger now. 7. I saw a panda in the zoo three days before. 8. We should take actions to protect wild animals. 9. She taked many photos of the animals. 10. While I was reading, my brother watches TV. 四、语篇语法填空 阅读下面短文,在空白处填入 1 个适当的单词或括号内单词的正确形式。 Last Sunday, my classmates and I 1. (visit) the zoo. We 2. (see) many wild animals there. At ten o'clock in the morning, we 3. (watch) the pandas. They 4. (eat) bamboo happily. While I 5. (take) photos of them, a little panda 6. (climb) up a tree. It was so lovely! Our teacher 7. (tell) us that the number of pandas is getting 8. (small) than before, and many wild animals are 9. danger. We should take action 10. (protect) them. Unit 6 Seasons 【单元话题】 描述四季特征与季节活动 【语法项目】 天气词汇;主系表等五种基本句型;季节介词 易错知识点解析 易错点 1:季节与天气名词、形容词混用 【典型表现】 把 It is rainy today 写成 It is rain today,把 There is much rain in summer 写成 much rainy,把 It is snowy in winter 写成 It is snow in winter。 【错因分析】 汉语的“下雨”“雨”在形态上没有区分,学生因此把动词、名词 rain 与形容词 rainy 混用。英语中表示天气状态时,作表语用形容词(rainy / snowy / windy / sunny / cloudy / foggy),作名词表示雨雪降水量用 rain / snow。判断方法:看空格是在 be 动词之后作表语还是在形容词后作名词。 【正误对比】 【错例】It is a sun day today. 【正例】It is a sunny day today. 【语法规则】 天气词汇的区别:名词加 -y 变成形容词(rain—rainy、snow—snowy、wind—windy、sun—sunny、cloud—cloudy、fog—foggy)。表示天气状态用 It is + 形容词,如 It is rainy.;表示“下雨”这一动作也可用动词 It is raining. 或 It rains a lot.。 【解题判断路径】 判断时先看空格是作表语还是作名词,作表语须用形容词。 易错点 2:季节介词的误用 【典型表现】 把 in spring 写成 on spring,把 in summer 写成 at summer,把 on a cold winter morning 写成 in a cold winter morning。 【错因分析】 汉语中“在春天”“在夏天的早晨”都只用“在”,学生因此忽略介词在具体到某一天时的转换。季节、月份、年份等较长的时间段前面用 in;但如果具体到某一天的上午、下午或晚上,即使前面有季节修饰,介词也要改用 on。判断方法:看时间单位是纯季节还是具体到了某一天的某一段。 【正误对比】 【错例】Leaves fall from trees at autumn. 【正例】Leaves fall from trees in autumn. 【语法规则】 四季名称前用 in,如 in spring、in summer、in autumn、in winter。如果具体到某一天的上午、下午、晚上,前面加 on,如 on a cold winter morning、on a snowy afternoon。in 也可用于由 the 引导的特指季节,如 in the summer of 2025。 【解题判断路径】 判断时先看时间单位是纯季节,还是具体到了某一天的某一段。 易错点 3:五种基本简单句句型结构判断错误 【典型表现】 把 She looks happy 判断为主谓宾,把 The weather turns cold 判断为主谓宾,把 He gave me a present 判断为主谓双宾中的间接宾语放错位置。 【错因分析】 学生把所有句子都按汉语的“谁做了什么”套入“主谓宾”理解,忽略了联系动词后接的是表语而不是宾语,也忽略了双宾语和复合宾语的区别。系表结构(主系表)中表语说明主语的状态,常见的感官动词 look、sound、smell、taste、feel 以及 turn、get、become 都属于连系动词,其后接形容词作表语。 【正误对比】 【错例】He gave a present me yesterday. 【正例】He gave me a present yesterday. 【语法规则】 连系动词后接形容词作表语,构成“主语 + 连系动词 + 表语”句型,不可用副词修饰。常用感官连系动词:look、sound、smell、taste、feel;变化连系动词:turn、get、become、grow。双宾语句型结构为“主语 + 动词 + 间接宾语(人)+ 直接宾语(物)”或“动词 + 直接宾语 + to / for + 间接宾语”。 【解题判断路径】 判断时先找出谓语,再确定它属于连系动词还是实义动词,据此判断句型。 易错点 4:表示天气的 it 与 there 混用 【典型表现】 把 It is rainy today 写成 There is rainy today,把 There is a lot of snow on the ground 写成 It is a lot of snow on the ground。 【错因分析】 汉语习惯用“今天有雨”“地上很多雪”,都有一个“有”字,学生因此把 There be 结构直接套用到天气的描述上。英语中指代天气用代词 it 作非人称主语;只有在描述某处存在雨雪这一物质时才用 There be 句型。判断方法:形容词作表语用 It is ;名词作主语表示存在用 There is / are 。 【正误对比】 【错例】There is much rain this week. 【正例】We have much rain this week. / There is much rain this week. 【语法规则】 描述天气用 it 作非人称主语,结构为 It is + 形容词,如 It is cold / rainy / snowy today.。There be 表示某处存在某种物质,后接名词,如 There is a lot of rain / snow.。两者不可混为一谈。 【解题判断路径】 判断时先看空格是作表语还是作名词,作表语须用形容词。 易错点 5:温度表达与比较级结构错误 【典型表现】 把 The temperature in summer is very hot 写成 is very hot,把 The temperat