内容正文:
Unit4 知识清单知
识
归
纳
语音语调
字母发音例词:
cr 发 /kr/(cry, cream, crayon, crown);
gr 发 /ɡr/(green, grape, grow, grass)
一般疑问句语调为升调,答句语调为降调;Let’s 引导的祈使句语调为降调。
必记单词
triangle 三角铁;violin 小提琴;piano 钢琴;guitar 吉他;erhu 二胡;flute 长笛;pipa 琵琶;drum 鼓;concert 音乐会;musical instrument 乐器;jar 广口瓶;bucket 桶;pot 锅
常考短语
play the triangle 演奏三角铁;play the violin 拉小提琴;play the piano 弹钢琴;play the guitar 弹吉他;play the erhu 拉二胡;play the flute 吹长笛;play the pipa 弹琵琶;play the drums 打鼓;join the school concert 参加学校音乐会
必会句型
描述正在做的事:I am playing the piano.
否定句:I'm not playing the guitar.
第三人称单数:She is playing the erhu.
复数:We are playing the drums.
一般疑问句:Are you playing the drum? — Yes, I am. / No, I'm not.
核心语法
现在进行时(be + 动词 - ing)(am/is/are + doing,表正在进行的动作)
动词 - ing 变化规则(play→playing, hit→hitting)
乐器名词前加 the(play the + 乐器,球类不加 the)
现在进行时的否定句(be 动词后加 not)
考
点
速
记
考点 01
考点 01 现在进行时(be + 动词 - ing)
I am playing the piano.(我正在弹钢琴。)
She is playing the erhu.(她正在拉二胡。)
We are playing the drums.(我们正在打鼓。)
解析
现在进行时表示正在发生的动作,结构为:主语 + be 动词 (am/is/are) + 动词 - ing 形式 + 其他
主语 I → am
主语 he/she/it/ 单数名词 → is
主语 we/you/they/ 复数名词 → are
拓展
否定句:be 动词后加 not → I'm not playing the guitar. She isn't playing the violin.
一般疑问句:Be 动词提前 → Are you playing the drum? Yes, I am. / No, I'm not.提分练
一、单项选择
( ) 1. I ______ playing the triangle.
A. am B. is C. are
( ) 2. She ______ playing the violin.
A. am B. is C. are
( ) 3. We ______ playing the drums.
A. am B. is C. are
二、用所给词的适当形式填空
I am ______ (play) the piano.
She is ______ (hit) the drum.
考点 02
考点 02 动词 - ing 变化规则
例句:
play → playing hit → hitting
解析
常见动词 - ing 变化规则:
一般情况:直接加 - ing → play→playing, sing→singing
以不发音的 e 结尾:去 e 加 - ing → make→making, take→taking
重读闭音节(辅 + 元 + 辅):
双写末尾辅音字母,加 - ing → hit→hitting, run→running, swim→swimming
拓展
常见变化:
直接加:play→playing, blow→blowing
去 e 加:dance→dancing, write→writing
双写加:hit→hitting, sit→sitting
提分练
一、写出下列动词的 - ing 形式
play → ________
hit → ________
make → ________
run → ________
二、单项选择
( ) He is ______ the guitar.
A. play B. playing C. plays
考点 03
考点 03 乐器名词前加 the
例句:
play the piano(弹钢琴) play the erhu(拉二胡)
play the drums(打鼓)
解析
表示 “演奏乐器” 时,乐器名词前必须加定冠词 the
表示 “进行球类运动” 时,球类名词前不加 the,如:play football(踢足球)
拓展
常见乐器搭配:
play the triangle, play the violin, play the piano, play the guitar, play the erhu, play the flute, play the pipa, play the drums
提分练
一、单项选择
( ) 1. I can play ______ piano.
A. a B. the C. /
( ) 2. She is playing ______ erhu.
A. a B. the C. /
二、改错(找出错误并改正)
I am playing piano._____________________
考点 04
考点 04 现在进行时的问答
例句:
—What are you doing?(你正在做什么?)
—I am playing the drum.(我正在打鼓。)
—Is she playing the violin?(她正在拉小提琴吗?)
—Yes, she is. / No, she isn't.(是的,她在。/ 不,她不在。)
解析
特殊疑问句:What + be 动词 + 主语 + doing? 回答用:主语 + be 动词 + 动词 - ing + 其他
一般疑问句:Be 动词 + 主语 + 动词 - ing + 其他?回答用:Yes, 主语 + be. / No, 主语 + be + not.
拓展
主语为第三人称单数时:
—What is he doing? —He is playing the guitar.
提分练
一、单项选择
( ) —What are you doing? —______
A. I play the drum. B. I am playing the drum. C. I playing the drum.
( )—Is she playing the flute? —______
A. Yes, she is. B. No, she is. C. Yes, she isn't.
二、按要求完成句子
I am playing the piano.(改为一般疑问句)
_______________________________________________________________________
考点 05
考点 05 语音:/kr/ & /ɡr/
例句:
cry /kraɪ/ 哭(/kr/) green /ɡriːn/ 绿色的(/ɡr/)
解析
字母组合 cr 发清辅音 /kr/,发音时声带不振动
字母组合 gr 发浊辅音 /ɡr/,发音时声带振动
拓展
常见发音词:
/kr/: cry, cream, crayon, crown
/ɡr/: green, grape, grow, grass
提分练
判断下列单词划线部分发音是否相同(T/F)
cry / cream ____
green / grape ____
cry / green ____
参考答案
考点 01 提分练
一、1.A 2.B 3.C
二、playing, hitting
考点 02
一、playing, hitting, making, running
二、B
考点 03
一、1.B 2.B
二、I am playing the piano.(在 piano 前加 the)
考点 04
一、1.B 2.A
二、Are you playing the piano?
考点 05
T 2. T 3. F
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