Unit4语法专项-过去进行时&后缀-less-ful课件 2025-2026学年仁爱科普版英语八年级上册

该初中英语课件聚焦仁爱八年级上册Unit 4语法，系统讲解过去进行时与一般过去时的定义、结构、时间标志词及用法差异，结合when/while连接用法，同步覆盖-less/-ful后缀构词规则，通过从基础定义到综合应用的递进设计，搭建清晰学习支架。 其亮点在于采用分层练习与高频易错点总结，通过时态辨析小技巧（如时间标志词判断）和构词规则对比（如careful/careless反义关系），培养学生思维品质与学习能力。综合短文填词等题型提升语言运用能力，为教师提供系统教学资源，助力高效课堂。

教学课件 仁爱英语八年级上册 Unit 4语法专项——过去进行时&一般过去时/后缀-less&-ful 全解精讲+分层练习 1 学习目标 1.掌握过去进行时的定义、结构和时间标志词 2.区分过去进行时与一般过去时的用法差异 3.熟练运用when/while连接两种时态的句子 4.掌握-less和-ful的构词规则，能正确变词 第一部分 过去进行时 - 核心定义 过去进行时表示过去某一具体时刻/时间段 正在进行、尚未完成的动作 核心强调动作的持续性和进行中 不关注动作的完成结果，只描述过程状态 例：She was reading at this time yesterday. 过去进行时 - 基本结构（一） 肯定式 主语 + was/were + 动词-ing I/he/she/it + was + 动词-ing you/we/they + were + 动词-ing 例句：I was watching TV at 8:00 last night. They were riding bikes in the park. 过去进行时 - 基本结构（二） 否定式: 主语 + was/were + not + 动词-ing 缩写：wasn’t / weren’t 例句：He wasn’t doing his homework then. They weren’t singing at the party. 疑问式: Was/Were + 主语 + 动词-ing？ 例句：Was she jogging at 9:00 a.m.?Were you reading a book yesterday? 过去进行时 - 时间标志词 类型 具体标志词/短语 例句 具体时间点 at 7:00 last night、at this time yesterday He was playing football at this time yesterday. 时间段 from 8 to 10 last morning、during the party We were dancing during the party. 从句引导词 when、while（表动作进行） I was walking when the rain came. 过去进行时 - 核心用法 1.强调过去特定时刻正在进行的动作 2.描述过去一段时间内持续的动作 3.用于情景描述，营造过去的氛围 4.常与when/while连用，描述背景动作 例：The sun was shining and the birds were singing. 第二部分 一般过去时 - 核心定义 一般过去时表示过去发生并已完成的动作 或过去存在的状态 核心强调动作的完成性和一次性 侧重描述“做了什么”，而非动作过程 例：He visited his grandma yesterday. 一般过去时 - 基本结构 肯定式：主语 + 动词过去式 例句：She finished her homework just now. 否定式：主语 + didn’t + 动词原形 例句：We didn’t go to the park last week. 疑问式：Did + 主语 + 动词原形？ 例句：Did you see a black cat on the road? 一般过去时 - 时间标志词 类型 具体标志词/短语 例句 过去时间点 yesterday、last week、two days ago They went to Beijing last month. 过去时间段 in 2023、in the past、once We lived in Shanghai in 2023. 完成提示 just now、at that time（侧重完成） I met her just now. 过去进行时&一般过去时 - 核心区别 1.动作状态：进行时表“进行中”，过去时表“已完成” 2.关注重点：进行时看过程，过去时看结果 3.时间标志：进行时接具体时刻，过去时接宽泛过去时间 4.句式搭配：进行时常作背景，过去时常作突发动作 难点解析 - when的用法 when后可接一般过去时（短暂动作） 主句用过去进行时（持续动作） 例：When the bell rang, we were having class. when后也可接过去进行时（持续动作） 主句用一般过去时（短暂动作） 例：When we were having class, the bell rang. 难点解析 - while的用法 while本身表“在……期间”，后只能接过去进行时 （持续性动作） 例：While my mom was cooking, I did my homework. 主句和从句均可接过去进行时 表示两个持续性动作同时进行 例：While I was reading, my sister was listening to music. 时态辨析 - 小技巧 看到具体时间点（at 8:00 last night/at this time yesterday） 优先用过去进行时 看到宽泛过去时间（yesterday/last week/just now） 优先用一般过去时 突发短暂动作用一般过去时，持续背景动作用过去进行时 时态基础小练 - 用所给动词适当形式填空 1.My sister __________ (draw) a picture at 9:00 a.m. yesterday. 2.They _______ (go) to the zoo last Sunday and _______ (see) many animals. 3.I _______ (not watch) TV at this time yesterday. I ________ (read) a novel. 4._______ you _______ (do) your homework when your father came back? 5.The boys _______ (play) football on the playground yesterday afternoon. was drawing went saw wasn’t watching was reading Were doing played 时态提升小练 - 选择填空 1.—What _______ he _______ at 8:00 last night? —He _______ a movie at home. A. did; do; watched B. was; doing; was watching C. were; doing; watched 2.I _______ breakfast when the phone _______. A. had; rang B. was having; was ringing C. was having; rang 3.While they _______ songs, the teacher came in. A. sang B. were singing C. are singing B C B 第三部分 形容词后缀 -ful - 构词规则 -ful是名词变形容词的后缀 直接加在名词后，表充满……的/具有……特征的 多数单词拼写无变化，以y结尾的名词保留y 例：help（名）→helpful（形） 有帮助的 use（名）→useful（形） 有用的 后缀 -ful - 常见例词与例句 care → careful 小心的 例：Be careful when you cross the road. joy → joyful 快乐的 例：She is joyful about the good news. success → successful 成功的 例：He is a successful writer. wonder → wonderful 极好的 例：The trip was wonderful. 形容词后缀 -less - 构词规则 -less是名词变形容词的后缀 直接加在名词后，表没有……的/缺乏……的 是-ful的反义后缀，拼写无需改变原词 部分词可同时加-ful和-less，形成反义词 例：help → helpless 无助的 use → useless 无用的 后缀 -less - 常见例词与例句 care → careless 粗心的 例：He made a careless mistake in the exam. hope → hopeless 无望的 例：Don’t be hopeless, everything will be better. harm → harmless 无害的 例：This animal is harmless to people. meaning → meaningless 无意义的 例：It’s meaningless to argue with him. 后缀 -ful & -less - 核心规律 1.词性变化：均为名词变形容词，词根含义不变 2.语义关系：同一词根加两者，通常构成反义词 3.拼写规则：绝大多数直接加后缀，无额外变形 4.用法：在句中作定语或表语，修饰人/物/事 后缀基础小练 - 用-ful/-less形式填空 1.This book is very __________ (use) for our English study. 2.It’s __________ (care) of you to leave your bag on the bus. 3.The little boy felt __________ (help) when he lost his way. 4.The movie is so __________ (joy) that everyone likes it. 5.That broken pen is __________ (use), you can throw it away. useful careless helpless joyful useless 后缀提升小练 - 根据句意写单词 1.My teacher is a __________ (有帮助的) person. (help) 2.It’s _________ (无意义的) to spend too much time on games. (meaning) 3.She is a __________ (细心的) girl, she never makes mistakes. (care) 4.The little bird is __________ (无害的), don’t be afraid of it. (harm) helpful meaningless careful harmless 语法综合小练（一）- 填空 1.While my dad __________ (repair) the car, I _________ (do) my homework. 2.The old man lives alone, but he never feels __________ (hope). 3.They ___________ (not have) dinner at home last night. They ate out. 4.It’s __________ (care) to finish your homework carefully. 5.—What _______ you _______ (do) at this time yesterday? —I ______________ (listen) to music. was repairing was doing hopeless didn’t have careful were doing was listening 语法综合小练（二）- 句型转换 1.He was playing basketball at 4:00 yesterday afternoon.（改为否定句） 2.We went to the park last Sunday.（对划线部分提问） 3.She was waiting for the bus when the rain came.（用while改写） 4.It’s useful to learn English well.（改为反义句，用-less） 5.Was she reading a magazine at this time yesterday?（作否定回答） He wasn’t playing basketball at 4:00 yesterday afternoon. What did you do last Sunday? While she was waiting for the bus, the rain came. It’s useless to learn English well. No, she wasn’t. 语法综合小练（三）- 短文填词 Last Sunday, I __________ (go) to the park with my friend. At 3:00 p.m., we __________ (walk) by the lake when a little boy fell into the water. We were __________ (help) at first, but a __________ (care) man jumped into the water and saved him. The boy’s mother was so thankful. It was a __________ (meaning) day for us. went were walking helpless careful meaningful 过去进行时&一般过去时 - 知识点总结 1.过去进行时：was/were+doing，表过去进行的动作，接具体时刻 2.一般过去时：动词过去式/did+原形，表完成的动作，接宽泛过去时间 3.when：可接两种时态，连接短暂与持续动作 4.while：后接过去进行时，可表两个持续动作同时进行 5.核心：看动作状态（进行/完成）和时间标志词 后缀 -ful & -less - 知识点总结 1.均为名词变形容词的后缀，直接加在名词后 2.-ful：充满……的/具有……的；-less：没有……的/缺乏……的 3.同一词根加两者通常构成反义词（careful/careless） 4.拼写规则：无特殊变化，直接衔接，特殊词单独记忆 5.用法：在句中作定语、表语，修饰人或事物 U4语法 - 高频易错点 1.时态：混淆时间标志词，误用was/were和动词过去式 2.when/while：while后接一般过去时，when答语形式错误 3.后缀：混淆-ful和-less的语义，名词变形容词时变形错误 4.句式：过去进行时的一般疑问句，错用did引导 语法应用 - 解题小贴士 1.做时态题：先找时间标志词，再判断动作状态 2.用when/while：先区分短暂/持续动作，再匹配时态 3.变后缀词：先看语义（肯定/否定），再选择-ful/-less 4.写句子：注意时态结构和后缀词的词性搭配 5.多积累：熟记常见例词和时间标志词，提升解题速度 课堂小结 本次学习了U4两大核心语法点 1.过去进行时与一般过去时的辨析、结构和用法 2.形容词后缀-ful和-less的构词规则和运用 掌握了时态的时间标志词和when/while的用法 能正确将名词变为-ful/-less形式的形容词 可完成多种题型，能在语境中综合运用语法 教学课件 Unit 4语法专项——过去进行时&一般过去时/后缀-less&-ful Thank you for listening! 32 $