内容正文:
五年级上(译林版)
Unit7 At weekends
Lesson3 Grammar time
Learning targets 学习目标
1.能正确运用频率副词。
2.能自主探究do和does的用法及第三人称单数形式的变
化规则。
Look and say
看图,说一说Mike的活动。
I always
I usually
I often
I sometimes
Read and find
观察四句话,你能发现什么?
I always play basketball at weekends.
I usually play football with Liu Tao.
I often watch TV at weekends.
I sometimes have a picnic in the park.
频率副词放在be动词后(am/is/are)放在行为动词前
频率副词
如:I am always busy at weekends .
l sometimes go to the cinema.
Read and find
My weekends
Sat. Sun. Sat. Sun. Sat. Sun. Sat. Sun.
√ √ √ √ √ √ √ √
√ √ √ √ √ √
√ √ √ √
√ √
always
usually
often
sometimes
频率副词
Learning tip
always,usually,often,sometimes是“频率副词”,用来表示动作的频率,即在一定时间内动作发生的次数。
用星星来区分频率的高低
always:
usually:
often:
sometimes:
Grammar time
关于频率副词
always
usually
often
sometimes
总是
有时
经常
通常
He sometimes goes to the park.
She always has dancing lessons.
I usually visit my grandparents.
We often have dinner with them.
位置
Act the dialogue
What do you do at weekends?
I always/usually/often/sometimes...
Act the dialogue
What do you do at weekends?
I always clean the table.
always:
usually:
often:
sometimes:
Act the dialogue
What do you do at weekends?
I always clean the table.
always:
usually:
often:
sometimes:
Act the dialogue
What do you do at weekends?
I often cook.
always:
usually:
often:
sometimes:
Let’s find
What ? you do at weekends ?
they
do
动词原形
主语不是第三人称单数时,要请助动词do来提问。
I often have dinner with my grandparents .
They usually fly a kite and have a picnic
主语不是第三人称单数时,动词使用原形。
实义动词,做、干
Let’s find
1.询问对方周末做什么
问句:What do you do at weekends?
答语:I/We+频度副词(always,usually,often,
sometimes...)+动词(短语)原形(+其他).
当you表示复数概念(两个或多个人)时,答语中要用we。
Let’s find
What ? he do at weekends ?
she
does
动词原形
主语是第三人称单数时,要请助动词does来提问。
He sometimes goes to the park .
She always has dancing lessons
主语是第三人称单数时,动词使用第三人称单数形式。
实义动词,做、干
Let’s find
2.询问他人周末做什么
问句:What does +主语(第三人称单数)+do at
weekends?
答语:He/She+频度副词+动词第三人称单数形式
(+其他).
he,she,单个人名或称呼。
Let’s find
试着说说以下动词的第三人称单数形式吧!
visit-visits
chat-chats
dance-dances
play-plays
go-goes
watch-watches
push-pushes
fix-fixes
guess-guesses
fly-flies
study-studies
have-has
一般情况下,在动词词尾+(s)
以s,x,o,ch,sh结尾的动词+(es)
以辅音字母+y结尾的动词,y变(i) +(es)
特殊变化要牢记。
Let’s try
Different people ___ (do) different things at weekends. Su Hai and Su Yang often _____ (have) dinner with their grandparents. Mike usually _____ (fly) a kite and ____ (have) a picnic with his family in the park. Helen always ______ (learn) about dancing. Sometimes she _____ (go) to the cinema with friends. What ___ you ____ (do) at weekends?
do
have
flies
has
learns
goes
do
do
Grammar time
What do you do at weekends?
I often go to the park.
Grammar time
What do you do at weekends?
We sometimes play basketball.
Let’s find
动词三单形式的构成规则:
play→plays
chat→chats
visit→visits
read→reads
go→goes
do→does
watch→watches
push→pushes
fly→flies
try→tries
study→studies
have→has
①.一般情况直接加s。
如:play→plays
②.以s、x、ch、sh和o结尾的动词加(es)。
如:go→goes
③.以辅音字母加y结尾的动词,变y为i,再加es。
如:fly→flies
④.有一些特殊变化的词要熟记。
如:have→has
Let’s find
主语不是三单,动词要用动词原形
SuHai and SuYang often _____ dinner with
their grandparents at weekends.
They ____ playing with Kitty.
Helen always ____ dancing lessons. She sometimes _____ to the cinema.
Mike usually ______ on the Internet. He usually _____ football with LiuTao. He sometimes _____ to the park.
have
like
has
goes
chats
goes
主语是三单,动词要用第三人称单数
plays
Summary
句型:What do/does…do at weekends?
……在周末做什么?
动词三单式构成规则
1.直接+s
如:work-works
2.以s,x,o,ch,sh结尾+es
do-does,teach-teaches,wash-washes
3.辅音字母+y结尾,去y变i+es
如:fly-flies,study-studies
4.特殊:have-has
Summary
表示频率的副词(由高到低)
always 总是
usually 通常
often 经常
sometimes 有时
seldom 很少
never 从不
See you!
$$