Unit 6 When was it invented 核心语法-2023-2024学年九年级英语全一册【学与练】核心语法&重点词汇（人教版）

Unit 6 When was it invented? 内容提要： 1. 一般过去时的被动语态 2. 一般将来时的被动语态 1、 一般过去时的被动语态 · 旧知识复习 一般过去时 1. 一般现在时的用法 (1) 发生的动作或存在的状态 常见的时间状语： · yesterday, the day before yesterday... · last+时间段/时间：last week/year/month/term, last Sunday… · 时间段+ago：two hours ago, three years ago, a moment ago… · in / on +过去的年/月/日，如 in 1999, in April, 2005 · 其他短语：just now, once upon a time… My mother went shopping yesterday. We stayed in Beijing for three days last month. He bought a new bike three days ago. Tom was born in 1999. (2) 表示 发生的动作 Li Tao always went to school by bus last term. We often went to the restaurant . 2. 谓语动词是be动词的一般过去时 (1) be动词的过去式有两种变形：is的过去式是 ;am的过去式是 ; are的过去式是 I was a reporter. 我以前是个记者。 He was a teacher. 他以前是名老师。 They were in Beijing. But now they are in Tianjin. 他们以前在北京。但是现在他们在天津。 (2) 各种句式 · 陈述句： was not 缩写为 ; were not 缩写为 Lily wasn’t a teacher. She was a nurse. · 一般疑问句： Were you a teacher ? · 特殊疑问句： When was he born? 3. 谓语动词是实义动词的一般过去时 (1) 谓语动词是实义动词时，在一般过去时情况下，要变成动词的过去式形式 动词的过去式的变化规则 · 一般在词尾直接加 ，清辅音后读[t]，浊辅音和元音后读[d]，在[t]和[d]后读[id] help-helped;work-worked;talk-talked · 以不发音e结尾的单词，直接加 live-lived;like-liked;move-moved · 以辅音字母+y 结尾的， ， study-studied;worry-worried;try-tries · 以重读闭音节结尾的， 最后一个辅音字母， stop-stopped;plan-planned;chat-chatted · 不规则变化(详见教材不规则动词变化表) let-let;fly-flown;did-done;be-been;deal-dealt;keep-kept The boy always helped the girl. David studied hard in primary school. She left Shanghai three days ago. (3) 各种句式 · 陈述句： 肯定式： 否定式： We visited the museum last Sunday He didn’t like pop music. · 一般疑问句： Did they come here? · 特殊疑问句： How did you go to scho