摘要:
**基本信息**
该专项以“规则精讲-易错警示-靶向练习”系统构建单元核心语法突破体系,聚焦三单变化、to/for辨析等高频考点,强化语言应用与规则迁移能力。
**专项设计**
|模块|题量/典例|方法提炼|知识逻辑|
|----|-----------|----------|----------|
|一般现在时(三单)|填空6题+选择3题(含have/has混淆)|三单主语分类(he/she/it等)+动词变化规则(加s/es/特殊)|从日常作息用法切入,通过主语人称区分建立动词形式选择逻辑|
|It's time to/for辨析|填空4题+句型转换2题|to+动词原形/for+名词的固定搭配法则|基于“该做某事”语义共性,通过后接成分差异构建辨析逻辑|
|时间介词at|选择2题+改错2题|具体时刻前用at的固定规则|从整点/非整点场景归纳介词使用唯一性,强化与in/on的区分|
|频率副词位置|连词成句2题+选择2题|实义动词前/be动词后的位置规律|结合动作频率描述需求,通过语序对比建立副词安放逻辑|
内容正文:
译林版四年级上册Unit 2 My day 常考易错语法专项练习
语法一:一般现在时(三单动词变化)【重中之重、超高易错】
语法精讲
1.用法:描述日常作息、经常性、习惯性的动作,是本单元核心时态。
2.核心规则:
主语为第一、二人称/复数(I/you/we/they、复数人名) → 动词用原形
主语为第三人称单数(he/she/it、单个人名、单数事物) → 动词必须变三单(加s/es)
3. 动词三单变化规则(单元必考):
一般动词直接加s:get→gets, play→plays
s/x/sh/ch/o结尾加es:watch→watches, go→goes
特殊不规则变化:have→has(最高频易错)
易错警示
1. 忘记三单变形:错句 She get up at six.(正确:gets)
2. 混淆have/has:I has breakfast.(正确:have);She have lunch.(正确:has)
3. 否定句三单误用:主语三单时,否定用doesn’t + 动词原形,不能再加s
专项练习一
一、用所给动词的适当形式填空
1. He ______ (get) up at six every day.
2. I ______ (have) dinner at seven.
3. My mother ______ (go) to work at eight.
4. They ______ (play) football after school.
5. She ______ (watch) TV in the evening.
6. Tom ______ (not have) lunch at home.
二、单项选择
( )1. My sister ______ up early every morning.
A. get B. gets C. getting
( )2. He ______ a new bag.
A. have B. has C. is
( )3. Lily ______ not go to school on Sunday.
A. do B. does C. don’t
语法二:It's time to / It's time for 用法辨析【高频混淆点】
语法精讲
两个句型均表示“该做某事了”,核心区别看后面接的内容:
It's time to + 动词原形(动词短语):It's time to get up.(该起床了)
It's time for + 名词(名词短语):It's time for school.(该上学了)
易错警示
1. 混用搭配:错句 It's time for go to bed. / It's time to class.
2. to 后多加ing、for 后加动词,是最常见扣分点
专项练习二
一、用to / for 填空
1. It’s time ______ have lunch.
2. It’s time ______ bed.
3. It’s time ______ go home.
4. It’s time ______ English class.
二、句型转换(同义句改写)
1. It’s time to go to school.(改为for句型)
_________________________________
2. It’s time for dinner.(改为to句型)
_________________________________
语法三:时间介词at的用法【基础易错】
语法精讲
本单元所有具体时刻前,统一用介词at,是固定搭配:
整点:at six o’clock(在六点)
非整点:at seven thirty(在七点半)、at four twenty(在四点二十)
易错警示
绝对不用 in/on 修饰具体时刻!高频错误:in 7:00 / on 8:30
专项练习三
一、单项选择
( )1. I go to bed ______ nine o’clock.
A. in B. on C. at
( )2. We have lunch ______ twelve thirty.
A. at B. on C. for
二、改错(圈出错误并改正)
1. She gets up in six every day. (______改为______)
2. They play games on four fifteen. (______改为______)
语法四:频率副词usually/sometimes 位置用法【难点易错】
语法精讲
本单元核心频率副词:usually(通常)、sometimes(有时)
固定位置:实义动词前,be动词后
实义动词(get/have/go/watch)前:I usually get up at seven.
be动词(am/is/are)后:She is sometimes late.
易错警示
高频语序错误:I go usually to school.(正确:I usually go to school.)
专项练习四
一、连词成句(注意副词位置)
1. usually, I, six, up, at, get (.)
_________________________________
2. sometimes, she, TV, evening, watches, in, the (.)
_________________________________
二、单项选择
( )1. He ______ plays football after school.
A. usually B. is C. am
( )2. I ______ late for school.
A. sometimes am B. am sometimes C. sometimes
参考答案及详细解析
专项练习一 答案解析
一、动词填空
1. gets 解析:He是三单主语,动词变三单加s
2. have 解析:I是第一人称,动词用原形
3. goes 解析:My mother是单数主语,go变三单加es
4. play 解析:They是复数主语,动词用原形
5. watches 解析:She是三单,watch以ch结尾,加es
6. doesn’t have 解析:Tom是三单,否定用doesn’t,后接动词原形have
二、单项选择
1. B 解析:sister是三单,动词用三单形式gets
2. B 解析:He是三单,have变has
3. B 解析:Lily是三单,否定助动词用does
专项练习二 答案解析
一、介词填空
1. to 2. for 3. to 4. for
二、同义句改写
1. It’s time for school.
2. It’s time to have dinner.
专项练习三 答案解析
一、单项选择
1. C 2. A
二、改错
1. in 改为 at 2. on 改为 at
专项练习四 答案解析
一、连词成句
1. I usually get up at six.
2. She sometimes watches TV in the evening.
二、单项选择
1. A 解析:实义动词前用频率副词
2. B 解析:频率副词置于be动词之后
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