Module 9 Unit 3Grammar 课件 2022-2023学年外研版七年级英语下册

MODULE 9 Life history Unit 3 Language in use 语法聚焦 一般过去时态(3)：不规则动词的过去式 一、复习一般过去时，需着重记忆不规则动词的变化形式： 1.过去式是动词原形。如： put—put， let—let， cut—cut， beat—beat， read—read， cost —cost， hurt—hurt 2.以d结尾的词，把d变成t。如： build—built， lend—lent， send—sent， spend—spent 3. 以ow / aw结尾的词，把ow / aw变成ew。如： blow—blew， draw—drew， know—knew， grow—grew 4.将动词原形中的元音字母i 变成a。如： begin—began， give—gave， sing—sang， swim—swam， sit—sat， drink—drank， ring—rang 5. 含有双写字母的词，将双写改为单写，在词尾加t。如： keep—kept， sleep—slept， feel—felt， smell—smelt 6. 将动词原形中的元音字母i 变成o。如： ride—road， drive—drove， write—wrote， shine—shone 7.过去式以o(a)ught 结尾。如： bring—brought， buy—bought， think—thought， teach—taught，catch—caught 二、除了变化形式不同以外，不规则动词的肯定句、否定句、一般疑问句、特殊疑问句的结构与规则动词的结构相同。 如：We spend two days in Beijing.我们在北京待了两天。 Did you spend two days in Beijing？你们在北京待了两天吗？ We didn't spend two days in Beijing.我们没有在北京待两天。 How long did you spend in Beijing？你们在北京待了多久？ 三、助动词和情态动词的过去式如下： shall—should(将要)(用于第一人称) will—would(将要)(用于所有人称) can—could(能，会)； may→might(可以) have to—had to(不得不) 含有助动词和情态动词的句子的过去时态要使用它们的过去式，后面的动词使用动词原形。 be was/were 是 leave left 离开 buy bought 买 meet met 遇到 come came 来 read read 读 do did 做 see saw 看见 get got 到达 send sent 发送 go went 去 spend spent 花费 have had 吃 swim swam 游泳 write wrote 写 take took 带走 肯定 否定 一般疑问句及回答 特殊疑问及回答 We saw the homes of the movie stars. We didn’t see the homes of the movie stars. Did you see the homes of the movie stars? Yes, we did. No, we didn’t. What did you see? We saw the homes of the movie stars. 肯定 否定 一般疑问句及回答 特殊疑问及回答 They swam in the sea. They didn’t swim in the sea. Did they swim in the sea? Yes, they did. No, they didn’t. Where did they swim? They swam in the sea. 肯定 否定 一般疑问句及回答 特殊疑问及回答 It took two hours to go there. It didn’t take two hours to go there. Did it take two hours to go there? Yes, it did. No, it didn’t. How long did it take to go there? It took two hours to go there. 肯定 否定 一般疑问句及回答 特殊疑问及回答 She went to work by bus. She didn’t go to work by bus. Did she go to work by bu