Unit5&Unit6语法知识点总结与练习2025-2026学年人教版英语八年级下册

该初中英语讲义通过知识框架系统梳理了U5过去进行时（含含义、结构、时间标志）和when/while区别，以及U6 unless/as soon as/so…that等状语从句的核心语法点，用对比示例呈现when/while用法差异，归纳“主将从现”规则及so…that与such…that、too…to的转换，清晰展现知识脉络与重难点联系。 讲义亮点在于“情境化语法应用”练习设计，如针对过去进行时时间标志“at this time yesterday”设题，考查“主将从现”的unless从句题目，解析中对比when短暂性动词与while延续性动词用法，培养语言运用和逻辑思维品质。练习覆盖基础辨析到综合应用，基础学生可掌握规则，优秀学生能深化理解，助力自主复习与教师分层教学。

八下英语单元U5&U6语法知识点总结与练习 Unit5 过去进行时；when和while的区别 一、语法知识点总结 1、过去进行时的含义 过去进行时表示过去某一时刻或某一段时间正在进行的动作。 例：I was reading at eight last night. 例：They were playing basketball at that time. 2、过去进行时的结构 肯定句：主语 + was / were + doing。 否定句：主语 + wasn’t / weren’t + doing。 一般疑问句：Was / Were + 主语 + doing…? 回答：Yes, 主语 + was/were. / No, 主语 + wasn’t/weren’t. 例：Were you sleeping then? 3、常见时间标志 at that time, at this time yesterday, at 8:00 last night, from seven to nine yesterday evening, when the rainstorm came等。 4、when的用法 when意为“当……的时候”，从句中的动词可以是短暂性动词，也可以是延续性动词。 例：I was reading when my mother came in. 5、while的用法 while意为“当……的时候；与……同时”，通常接延续性动作，常用进行时。 例：While I was doing my homework, my brother was watching TV. 6、when和while的区别 when强调某个动作发生的时间点，可接短暂性动词；while强调某个动作正在进行的时间段，常接延续性动词。 例：The phone rang when I was cooking. 例：While I was cooking, the phone rang. 二、巩固练习 1. —What were you doing at seven yesterday evening? —I ____ dinner with my family. A. have B. had C. was having D. am having 2. The students ____ an English test at this time yesterday. A. take B. took C. were taking D. are taking 3. My mother was cooking ____ my father was reading the newspaper. A. when B. while C. until D. if 4. The doorbell rang when I ____ my homework. A. do B. did C. was doing D. have done 5. While Jack ____ to music, his sister was cleaning the room. A. listens B. listened C. was listening D. is listening 6. It ____ heavily when we got to school yesterday morning. A. rains B. rained C. was raining D. has rained 7. —Were they playing soccer at 4:00 yesterday afternoon? —____. They were playing basketball. A. Yes, they were B. No, they weren’t C. Yes, they did D. No, they didn’t 8. I saw an old friend of mine while I ____ in the park. A. walked B. was walking C. walk D. have walked 参考答案 1、C 解析：过去具体时刻，用过去进行时was having。 2、C 解析：at this time yesterday 昨天的这个时候，过去进行时were taking。 3、B 解析：while连接两个同时进行的延续性动作。 4、C 解析：when引导时间状语，主句短暂动作，从句用过去进行时。 5、C 解析：while从句用过去进行时was listening。 6、C 解析：got到达那一刻，外面正在下雨，过去进行时was raining。 7、B 解析：问句用were，答句说在打篮球，做否定回答No, they weren’t。 8、B 解析：while从句用过去进行时was walking。 Unit6 unless / as soon as / so…that引导的状语从句 一、语法知识点总结 1、unless引导条件状语从句 unless意为“除非；如果不”，相当于if…not。 例：You won’t pass the exam unless you work hard. 例：You won’t pass the exam if you don’t work hard. 2、unless的时态规则 unless引导条件状语从句时，如果主句是一般将来时，从句用一般现在时，即“主将从现”。 例：Unless it rains tomorrow, we will go hiking. 3、as soon as引导时间状语从句 as soon as意为“一……就……”。引导时间状语从句时，也常用“主将从现”。 例：I will call you as soon as I arrive in Beijing. 4、so…that…引导结果状语从句 so…that…意为“如此……以至于……”，表示结果。 常见结构：so +形容词 / 副词 + that从句。 例：The box is so heavy that I can’t carry it. 5、such…that…与so…that…的区别 so + adj. / adv. + that从句。 such + a/an + adj. + 可数名词单数 + that从句。 such + adj. + 可数名词复数 / 不可数名词 + that从句。 例：He is so kind that everyone likes him. 6、too…to…与so…that…的转换 too + adj. + to do sth. 表示“太……而不能做某事”。 例：The boy is too young to go to school. = The boy is so young that he can’t go to school. 7、adj. + enough to do sth. 形容词 + enough + to do sth. 表示“足够……可以做某事”。 例：He is old enough to go to school. 二、巩固练习 1. You won’t make progress ____ you practice English every day. A. if B. unless C. because D. although 2. I will send you a message as soon as I ____ home. A. get B. got C. will get D. am getting 3. The question is ____ difficult ____ few students can answer it. A. too; to B. so; that C. enough; to D. such; that 4. Unless Tom ____ up early tomorrow, he will miss the train. A. gets B. will get C. got D. is getting 5. She is such a kind girl ____ everyone wants to make friends with her. A. so B. that C. because D. if 6. The boy is old enough ____ himself. A. look after B. looking after C. to look after D. looked after 7. The box is too heavy for me ____. A. carry B. carrying C. to carry D. carried 8. I will tell him the good news as soon as he ____ back. A. comes B. came C. will come D. is coming 参考答案 1、B 解析：unless除非，如果不。 2、A 解析：as soon as主将从现，从句用一般现在时get。 3、B 解析：so+形容词+that从句，如此……以至于。 4、A 解析：unless主将从现，从句一般现在时gets。 5、B 解析：such a/an +adj.+名词单数+that从句。 6、C 解析：adj.+enough to do sth.足够……去做某事。 7、C 解析：too…to… 太……而不能……。 8、A 解析：as soon as主将从现，从句一般现在时comes。 学科网（北京）股份有限公司 $