
2025-2026 学年外研版英语(2024)七年级上册 Unit 4 语法讲练:一般现在时与频度副词 一、核心知识精讲 (一)一般现在时 1. 动词第三人称单数变化规则表 例词(原形 变化类型 规则说明 三单形式) play 一般情况 词尾直接加 - s plays; celebrate celebrates watch 以 - s, x, ch, sh, o 结尾 词尾加 - es watches; go goes study 以辅音字母 + y 结尾 变 y 为 i 再加 - es studies; carry carries have 不规则变化 需特殊记忆 has; be is 2. 句式转换规则(含实义动词) 一般疑问句:借助助动词 do/does,主语为第三人称单数时用 does,其他人称用 do,助 动词提前至句首,谓语动词还原为原形。 肯定回答:Yes, 主语 + do/does. 否定回答:No, 主语 + don't/doesn't. 例: Do you eat dumplings on Spring Festival (你春节吃饺子吗?) Yes, I do. (是的,我吃。) Does he give presents at Christmas (他圣诞节送礼物吗?) No, he doesn't. (不,他不送。) 否定句:在谓语动词前加 don't/doesn't,主 语为第三人称单数时用 doesn't,其他人称用 don't,谓语动词还原为原形。 例:We don't set off fireworks at night. (我们晚上不放烟花。) She doesn't like sweet zongzi. (她不喜欢甜粽子。) (二)频度副词 1. 常见频度副词及用法表 频度副词 频 率 范 围 例句 always 100% We always have a family reunion on Spring Festival. (我们春 节总是全家团聚。) usually 80% 左 右 They usually eat mooncakes on Mid-Autumn Festival. (他们中秋 节通常吃月饼。) He often watches Spring Festival Gal 60% 左 often 右 A. (他经常看春晚。) 40% 左 Sometimes we go traveling during holidays.(我们有时假期去旅 sometimes 右 行。) never 0% She never forgets to post Spring Festival couplets. (她从不 忘记贴春联。) 2. 对频度提问的特殊句式 用 “How often + 一般疑问句” 提问动作发生的频率,回答需包含频度副词或表频率的 短语(如 once a year, every month)。 例: How often do you celebrate Christmas (你多久过一次圣诞节?) We celebrate it once a year. (我们一年过一次。) 二、常见易错点突破 第三人称单数动词变化错误 错误:He often play football on holidays. 正确:He often plays football on holidays. (第三人称单数加 - s) 错误:She do her homework after the festival. 正确:She does her homework after the festival. (助动词用 does) 频度副词位置混淆 错误:We have always family dinners. 正确:We always have family dinners. (频度副词在实义动词前) 错误:They are usually watch TV. 正确:They usually watch TV. / They are usually watching TV.(频度副词不与 be 动 词和实义动词原形直接连用) 一般疑问句中动词还原错误 错误:Does she celebrates Spring Festival 正确:Does she celebrate Spring Festival (助动词 does 后动词用原形) 错误:Do your parents has zongzi 正确:Do your parents have zongzi (助动词 do 后动词用原形) some 与 any 在疑问句中的误用 错误:Do you want any mooncakes 正确:Do you want some mooncakes (期望得到肯定回答的疑问句用 some) 错误:Are there some lanterns in the room 正确:Are there any lanterns in the room (一般疑问句用 any) 三、即时小练: 用动词的适当形式填空 ① My mother often _____(make)dumplings on Spring Festival. ② They _____(not watch)dragon boat races every year. ③ _____ your father _____(give)you presents at Christmas ④ She ... ...
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