Unit 1 Good habits 核心语法精讲精练(专项训练)-2026-2027学年译林版(三起)英语五年级上册
译林版五年级上册Unit 1 Good habits 核心语法精讲精练
单元核心语法总览(4大必考核心)
本单元围绕“好习惯与坏习惯”,核心语法全部为五年级重难点、期末高频考点:
1.一般现在时 动词第三人称单数变形(单元重中之重)
2.频度副词位置规则(always/usually/often/sometimes/never)
3.情态动词should/shouldn’t 用法(提建议、讲习惯)
4.形容词变副词 修饰动词(quiet→quietly 等单元必考变形)
1.单数主语动词必变三单,have特殊变has;
2.频度副词:实前be后、情态后;
3.should永远加动词原形,无人称变化;
4.修饰动作加ly,形修名、副修动。
用法:描述长期、习惯性的行为(好坏习惯),是本单元主体时态。
当主语为 he/she/it/单人单数名词 时,谓语动词必须用三单形式。
三单变形规则(必考)
1. 一般动词:直接 + s listen→listens, keep→keeps
2. s/x/ch/sh/o 结尾:+ es watch→watches, finish→finishes, go→goes, do→does
3. 辅音字母+y 结尾:变 y 为 i + es study→studies
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4. 元音字母+y 结尾:直接+s play→plays
5. 特殊不规则:have → has
❌ 单数主语漏加 s/es;❌ 混淆元音/y、辅音/y变形;❌ have三单写错
1. listen ________ 2. keep ________ 3. finish ________
4. watch ________ 5. go ________ 6. do ________
7. study ________ 8. play ________ 9. have ________
1.He ________ (get) up early every day. He has a good habit.
2.Liu Tao ________ (finish) his homework before dinner.
3.She ________ (listen) to teachers carefully in class.
4.My brother ________ (not go) to bed late.
5.Mike sometimes ________ (play) football after school.
本单元五大频度副词:always, usually, often, sometimes, never
黄金位置口诀:实前be后,情态后
1. 实义动词之前:He always gets up early.
2. be动词之后:She is never late.
3. 情态动词之后:You should always help others.
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❌ 语序颠倒;❌ sometimes位置随意摆放(可句首/句中,其余只能句中)
1. He gets always up early. ( ) ________
2. She often is late for school. ( ) ________
3. You should never run in the classroom not. ( ) ________
1. 我通常晚饭前完成作业。
I ________ ________ my homework before dinner.
- 他从不晚睡。
He ________ ________ to bed late.
核心语法三:should / shouldn’t 情态动词用法
用法:用于评价好习惯、坏习惯,给出建议
1. 肯定:should + 动词原形 应该……(好习惯)
2. 否定:shouldn’t + 动词原形 不应该……(坏习惯)
核心规则:无人称、时态变化,后面永远加动词原形
❌ should后面动词加s/ing;❌ 否定写成should not’t
一、用should / shouldn’t + 动词原形填空
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