Unit 5 语法知识 2022-2023学年人教版八年级英语下册

八年级下Unit 5 What were you doing when the rainstorm came? 过去进行时： · 结构用法 句型 结构 例句 肯定句 主语+be（was/were）+doing+其他 Tom was watching TV when his father came home. 否定句 主语+be（wasn’t/weren’t）+doing+其他 Tom wasn’t watching TV when his father came home. 一般疑问句 Was/Were）+主语+doing+其他 Wss Tom watching TV when his father came home? 简短回答 Yes,主语+was/were. No,主语+wasn’t/weren’t. Yes,he was. No,he wasn’t. · 时间标志 at this time +过去时间，this time yesterday / this time last weekend. at+精准时间+过去时间 at 9:00 yesterday / at 11:20 the day before yesterday · 现分词规则 口诀 情况 构成规则 举例 直 一般动词 在词尾加ing eat-eating 去 以不发音的e结尾 去掉e，再加ing use-using 双 重读闭音节结尾 双写词尾字母，再加ing Run-running 改 以ie结尾的 把ie改成y，再加ing Lie-lying What were you doing when the rainstorm came? what were you doing at the time of the rainstorm？ 当暴风雨来临的时候你在干什么？ 考点一：while/when/as用法 单词 主句（谓语动词） 从句（谓语动词） When/While 短 长 While 长 长 When 长 短 as一边…一边 （一般过去时） 短 短 少数情况下，如果强调动作正在发生，as从句也可以用正在进行时。 e.g., The sat mother sat on the roadside, shouting as she was crying. 三个单词互换：如果从句动作和主句的动作同时发生，并且从句动作为延续性动词时。 e.g. When/While/As we were dancing, a stranger came in. 练习： 1. I arrived at the party, everyone was already here. 2. They rushed in we were discussing problems. 3.The students took notes they listened. 考点2：at the time of 在…时候 过去进行时的标志词 I was so busy looking for the umbrella that I didn’ t see a car coming.我正忙着寻找伞，以至于我没看见一辆小汽车过来。 考点1：be busy doing sth=be busy with sth 忙于做某事 考点2：see sb/sth doing sth 看到某人或某物正在做某事(强调动作正在进行) My alarm didn’ t go off so I woke up late．我闹钟没响，所以我醒晚了。 1)go off(闹钟）发出响声，离开 2) wake-woke-woken wake up 醒来 I was waiting for the bus when it began to rain heavily. =While I was waiting for the bus, it began to rain heavily. -当开始下大雨的时候，我正在等公交车。 考点1:begin-began -begun -beginning Begin to do sth=start to do sth 开始做某事 考点2：rain/snow heavily 雨下得大，雪下得大 (雨雪大小，交通拥堵) I called at seven and you didn’t pick up.我7点给你打电话，你没接。 考点1：call/ring/ phone sb (up)=give/make sb a