时间状语从句when while as soon as until-2025-2026学年八年级英语下册语法易错点精讲（教科版五四制）

初中外研版 【寒假专版】 8年级下册语法精讲 寒假专版 时间状语从句专项训练 寒假语法易错点精讲 学段：初中教材：外研版（五四制）年级：八下 语法认知 时间状语从句(when,while,as soon as,until)=由连词when(当…时)、while（当…时/在 …期间)、as soon as(一…就…)、until(直到…为止)引导的从句，在句中用于说明动 作发生的时间。 易错点讲解 易错点一：when与while的用法混淆 讲解： when引导时间状语从句时，从句谓语动词可以是延续性动词也可以是非延续性动词；while引导 时间状语从句时，从句谓语动词必须是延续性动词，且通常与进行时连用。 例句：I was reading a book when the doorbell rang.(when引导从句，rang为非延续性动词)：While I was reading a book,my brother was watching TV.(while引导从句，reading为延续性动词且用进行 时) 真题再现： 1.(2024山东济南期中，外研版)I was doing my homework_my mother came back. A when B while C as soon as D until 答案：A解析：从句谓语动词came为非延续性动词，用when引导时间状语从句。 2.(2024辽宁沈阳月考，外研版)_we were walking in the park,it began to rain. A When B While C As soon as D Until 答案：B解析：从句谓语动词were walking为延续性动词且用进行时，用while引导时间状语从 句。 易错点二：as soon as引导从句的时态错误 初中外研版 【寒假专版】 8年级下册语法精讲 讲解： as soon as引导时间状语从句时，遵循“主将从现”原则，即主句用一般将来时，从句用一般现在 时表将来。 例句：I will call you as soon as I arrive in Beijing. 真题再现： l.(2023天津和平区期末，外研版)My father_me a story as soon as he_home. A will tell;gets B tells;will get C will tell;will get D tells;gets 答案：A解析：as soon as引导时间状语从句，主句用一般将来时will tell,从句用一般现在时 gets表将来。 2.(2023河北石家庄期中，外研版)We_a party as soon as our teacher_back A have;come B will have;comes C had;came D will have;will come 答案：B解析：as soon as引导时间状语从句，主句用一般将来时will have,从句用一般现在时 comes表将来。 易错点三：unl的肯定与否定用法混淆 讲解： til用于肯定句时，主句谓语动词为延续性动词，意为“直到…为止”；用于否定句时，主句谓 语动词为非延续性动词，构成“not.ntil”结构，意为“直到…才…”。 例句：He waited until his mother came back.(肯定句，waited为延续性动词)：I didn't go to bed until I finished my homework..(否定句，go为非延续性动词) 真题再现： 1.(2024山西太原期末，外研版)Tom stayed in the library it closed. A when B while C until D as soon as 答案：C解析：主句谓语动词stayed为延续性动词，用until表示“直到…为止”。 2.(2024重庆渝中区月考，外研版)She一leave the room一the rain stopped. A didn't;until B doesn't;until C won't;until D isn't;until 答案：A解析：leave为非延续性动词，用“not.until..”结构，根据stopped可知时态为一般过 去时，所以用didn't。 易错点四：时间状语从句中时态的呼应错误 3 初中外研版 【寒假专版】 8年级下册语法精讲 讲解： 当主句为一般过去时，时间状语从句通常也用相应的过去时态，如一般过去时、过去进行时等。 例句：He was reading a newspaper when I entered his room.(主句过去进行时，从句一般过去时) 真题再现： 1.(2023山东青岛期中，外研版)While Tom_TV,his father_home. A watched;came B was watching;came C watched;was coming D was watching;was coming 答案：B解析：wile引导时间状语从句常用过去进行时，主句用一般过去时，所以第一空用 was watching,第二空用came。 2.(2023辽宁大连期末，外研版)When I_young,I_to be a doctor. A am;want B was;want C am;wanted D was;wanted 答案：D 解析：主句和从句都描述过去的情况，都用一般过去时，所以第一空用ws,第二空用 wanted. 易错点综合演练 综合演练 I.单项选择（直击易错点) l.I was listening to music_my father came in.（易错点一) A when B while C as soon as D until 2.She_start cooking_her son finishes his homework.(易错点二) A will;until B/;until C will;as soon as D/;as soon as 3.They played basketball on the playground_it got dark.(易错点三) A when B while C until D as soon as 4.When I_in the park,I_an old friend.(易错点四) A walked;met B was walking;met C walked;was meeting D was walking;was meeting Ⅱ.用所给词的适当形式填空（强化易错点区分） l.(tead)a novel,he heard a loud noise outside.(易错点一) 2.My mother_(buy)me a new dress as soon as she(get)her salary..（易错点二) 3.He_(not go)to bed until his parents_(return)home last night.（易错点三) 4.While Tom_(do)his homework,his little sister_(play)with toys.(易错点四) 初中外研版 【寒假专版】 8年级下册语法精讲 1.短文填空（综合运用四大易错点) 用适当的连词或动词时态填空，使短文完整通顺。（外研版教材课文改编） Last Sunday,I had a busy morning.I(clean)my room my mother called me.She asked me to go shopping with her.I agreed and we left the house.we were walking to the supermarket,it suddenly started to rain.We ran to a nearby shop to hide.The rain stopped after ten minutes.We continued our way.I told my mother that I(help)her carry the things as soon as we(arrive)at the supermarket. When we got there,I chose some fruits.My mother said she(cook)a big meal for us when we got home.We stayed in the supermarket we bought all the things we needed.What a great day! IV.连词成句（聚焦易错句式） 1.were,reading,we,when,the,bel,rang,books()（易错点一) 2.he,will,call,me,he,as soon as,Beijing,reaches()(易错点二) 3.didn't,until,finish,I,my,homework,twelve,.o'clock()（易错点三) 4.was,while,I,TV,watching,my,came,father,.in()（易错点四) 参考答案 I.单项选择 1.A2.C3.C4.B Ⅱ.用所给词的适当形式填空 1.While reading 2.will buy,gets 3.didn't go;returned 4.was doing;was playing II短文填空 1.was cleaning;when 2.While 3.would help;arrived 4.would cook 5.until V.连词成句 1.We were reading books when the bell rang. 2.He will call me as soon as he reaches Beijing. 3.I didn't finish my homework until twelve o'clock. 4.While I was watching TV,my father came in. 4