2023-2024学年外研版英语七年级上册一般现在时课件(共56张PPT)

(共56张PPT)
一
般
现
在
语法
时
掌握一般现在时的定义，时标，句型结构
01
了解动词定义，掌握动词分类。掌握五种动词三
单变化规则，并能正确应用
02
教学目标
熟练掌握什么是三单，并能熟练进行替换练习
03
掌握一般现在时变否变疑的句型转换，并能正确完成相关题目
04
一般现在时
1.定义：
2.时标：
1）
2）
3.结构：
4.三单动变规则：
1）
2）
3）
4）
5.句型转换：
1）变疑
2）变否
笔记整理方法
告诉你一个小秘密
一般现在时
1.My father goes to work every day.
2.He never plays football .He doesn't like it.
3.My mum often eats with a knife and fork.
4.Tom often rides his bike to school.
5.I always ride my bikes to school.
6.Sam sometimes cleans the blackboard for his teacher.
1.现在进行 2.过去 3.习惯或经常
1.My father goes to work every day.
2.My father is reading a book now.
3.My mum often eats with a knife and fork.
4.He goes to school by bus every day.
5.He is writing a letter to me now.
6.Look! The bird is flying away.
7.He never plays football .He doesn't like it.
判断下列句子哪些是一般现在时
一般现在时
定义
习惯性，经常性发生的动作。
一般现在时
1.My father goes to work every day.
2.He never plays football .He doesn't like it.
3.My mum often eats with a knife and fork.
4.Tom often rides his bike to school.
5.I always ride my bikes to school.
6.Sam sometimes cleans the blackboard for his teacher.
一般现在时
定义
习惯性，经常性发生的动作。
时标
1）频副系列 always, usually, often, sometimes, never
2）every 系列 every day, every year, every morning
always [ lweiz] 一直，总是（100%）
usually [ ju u li] 通常地 （80%）
often [ fn] 常常 （60%）
sometimes 有时 （20%）
never 从不 （0%）
①listen! ②last week ③yesterday
④never ⑤always ⑥every night
⑦Look！ ⑧often ⑨sometimes
选出一般现在时的时标
一过： 现进： 一现：
②③
①⑦
④⑤⑥⑧⑨
我一直骑着我的自行车去学校。
（ride my bike to school）
I always ride my bike to school.
我从来不骑着我的自行车去学校。
（ride my bike to school）
I never ride my bike to school.
1.He goes to work every day.
2.He doesn't go to work every day.
3.Does he go to work every day
Yes,he does.
No,he doesn't.
一般现在时
肯定句
否定句
一般疑问句
肯否回答
定义
习惯性，经常性发生的动作。
时标
1）频副系列 always, usually, often, sometimes, never
2）every 系列 every day, every year, every morning
一般现在时
定义
习惯性，经常性发生的动作。
时标
1）频副系列 always, usually, often, sometimes, never
2）every 系列 every day, every year, every morning
肯定句
否定句
疑问句
主语+三单.(主三单，谓S)
主语+doesn't+原形.(does是面照妖镜，后面动词现原形)
Does+主语+原形？.(does是面照妖镜，后面动词现原形)
1.My father goes to work every day.
2.Do you do your homework every night
3.My mum often eats with a knife and fork.
4.He doesn't go to school by bus every day.
5.Does he ride a bike to school
6.Mun doesn't like hamburgers.
7.Does she play with dolls every day
火眼金睛
肯定句： 否定句： 一疑：
1.3
4,6
2,5,7
Does he _____football every day
play
playing
played
A
B
C
He doesn't ____his homework every night.
do
doing
does
A
B
C
He ____a yellow taxi to his home every day.
take
takes
took
A
B
C
一意义
二、分类（根据动词在句中的功能，动词分为四类）
I drink milk every day.
He is a teacher.
They don’t like watching TV.
Tom will go to Jinan tomorrow.
实义动词
系动词
情态动词
助动词
用来形容或表示各类动作及状态的词，英语动词是句子的核心
动词的五种基本形式
根据使用，动词有五种基本形式
动词形式（根据动词在句中的功能，动词形式分为五类）
He drinks milk every day.
They watched TV after they had drunk milk.
动词第三人称单数形式
动词过去式
现在分词
过去分词
I drink milk every day.
动词原形
He is drinking milk.
I drank milk every day.
第3节 动词的“数”
“原形” 变 “单三”
(一)规则变化
原形 单三
work
works
keep
keeps
begin
begins
清音读/s/
元音/浊辅音读/z/
一、一般情况，动词后直接+s
发音
give
gives
原形 单三 发音
cut
cuts
hurts
spends
ds/dz/
hurt
spend
一、一般情况，动词后直接+s
ts/ts/
写出第三人称单数：
snow______ take______
buy _______ write______
cut ________ drink______
eat________ play_______
snows
buys
cuts
takes
eats
writes
drinks
plays
1. He (like / likes) drinking milk.
2. She (read / reads) books every day.
3. He (play / plays) computer games every day.
4. It (listen / listens) to the radio every day.
5. Linda (draw / draws) pictures every day.
6. Jane and Linda (play / plays) football every day.
选择正确的单词
原形 单三 发音
guess
guesses
fix
fixes
catch
catches
brush
brushes
es发 /iz/
二、以-s, -x, -sh, -ch结尾的名词，词尾加es
写出第三人称单数：
wash_________ match _______
guess______ cut ________
finish_________ go________
snow______ do ________
catch _______ buy ________
washes
matches
guesses
finishes
goes
snows
does
catches
buys
cuts
1. He________ TV every evening. (watch) 2. We always ________ to school on foot. (go)
3. His uncle usually _________ to work by bus. (go)
4. I always ______ up at six in the morning.(get)
5. John ________ like his father. (look)
用动词正确形式填空
watches
go
goes
get
looks
原形 单三 发音
fly
flies
carry
carries
buy
buys
play
plays
ies发/iz/
s发/z/
三、以-y结尾的名词:(1) 以辅+y,y→ i+es；
(2) 以元+y，直接+s
写出第三人称单数：
fly ______ match _______
guess______ study______
finish_________ play________
buy______ carry________
do ________ catch _______
flies
matches
guesses
studies
finishes
plays
carries
buys
does
catches
原形 单三
has
go
goes
四、特殊情况特殊记
are
is
have
do
does
写出第三人称单数：
wash_________ match _______
guess______ study______
finish_________ go________
snow______ carry________
do ________ have ________
catch _______ buy ________
fly ________ are ________
box ________ cut ________
washes
matches
guesses
studies
finishes
goes
carries
snows
does
has
catches
buys
flies
is
boxes
cuts
Summary
1. 一般+s
2. 以-s，-x，-ch，-sh，-o结尾,+es
3. 辅+y结尾，y— i+es
4. 特殊：have— has
动词的"三单"形式，与“名词变复数”一致：
一般现在时
定义
习惯性，经常性发生的动作。
时标
1）频副系列 always, usually, often, sometimes, never
2）every 系列 every day, every year, every morning
肯定句
否定句
疑问句
主语+三单.(主三单，谓S)
主语+doesn't+原形.(does是面照妖镜，后面动词现原形)
Does+主语+原形？.(does是面照妖镜，后面动词现原形)
第4节 动词单三的运用
何为单三？？何时使用
I like lamb , but my husband likes steak.why因为主语不同第一人称单数第三人称单数主三单，谓s什么主语是三单？人称代词单数复数第一人称Iwe第二人称Youyou第三人称he/she/itthey
2.能用he/she/it代替的主语
I like lamb , but my husband likes steak.
why
因为主语不同
第一人称单数
第三人称单数
主三单，谓s
什么主语是三单？
人称代词 单数 复数
第一人称 I we
第二人称 You you
第三人称 he/she/it they
1.he/she/it
he
三单IMy father and IMy fatherHelenBob and MaryTimMr. SmithMr. Smith’s sonyouwe非三单2.能用he/she/it代替的主语I like lamb , but my husband likes steak.why因为主语不同第一人称单数第三人称单数主三单，谓s谓语如何+s 人称代词单数复数第一人称Iwe第二人称Youyou第三人称he/she/itthey1.he/she/ithe什么主语是三单？
plays
has
goes
gets
doesn’t do
用所给人称改写下列句子，并朗读句子。
I play basketball with my friend after school. (my brother)
We go to school every day. (he)
He swims better than others. (Jack)
Do you go to music club on Tuesday (Jack)
My brother plays basketball with his friend after school.
He goes to school every day.
Jack swims better than others.
Does Jack go to music club on Tuesday
第5节 句型转换-1
如何变否
I like hamburgers.
变否
I don't like hamburgers.
She likes hamburgers.
变否
She doesn't like hamburgers.
I like hamburgers.
变否
I don't like hamburgers.
She likes hamburgers.
变否
She doesn't like hamburgers.
主语非三单变否+don't,主语是三单，变否+doesn't
01
02
03
04
主三单，谓s
V三单，与名词变复数一致
does是面照妖镜，后面动词现原形。
主三单，助does
一般现在时否定句的构成：在动词前面加do not或does not，变成否定句后所加的“s”或“es”必须去掉还原。
1. I play football. 7. He play football.
2. You play football. 8. She play football.
3. We play football. 9. It play football.
4. You play football. 10. Tom play football.
5. They play football. 11. My father play football.
don’t
doesn’t
don’t
don’t
don’t
don’t
doesn’t
doesn’t
doesn’t
doesn’t
01
02
03
04
主三单，谓s
V三单，与名词变复数一致
does是面照妖镜，后面动词现原形。
主三单，助does
将下列句子改为否定句。
1. She goes to school.
2. He rides a bike.
3. She sleeps in the bed.
4. His father talks with him.
5. The dog drink a cup of water.
6. Tom flies a kite.
1.She doesn’t go to school.
2.He doesn’t ride a bike.
3.She doesn’t sleep in the bed.
4.His father doesn’t talk with him.
5.The dog doesn’t drink a cup of water.
6.Tom doesn’t fly a kite.
否定句:在动词前+doesn’t或don’t1.She _____ _____ (do)her homework every day.2.I _____ _____ (live)in Huanggang.3.He _____ _____ (need)a pair of shoes.4.Danny _____ _____ (see)the apple tree 5.We _____ _____ (come)from America.6.The girl _____ _____ (look)out of the window and sees many birds in the sky.
doesn't do
don't live
doesn't need
doesn't see
don't come
doesn't look
第5节 句型转换-2
如何变疑
They like hamburgers.
变疑
Do you like hamburgers
She likes hamburgers.
变疑
Does she like hamburgers
They like hamburgers.
变疑
Do they like hamburgers
She likes hamburgers.
变疑
Does she like hamburgers
主语非三单变疑句首+do,主语是三单，变疑句首+does
1变2，句号变问号
1._____the desk_____(have)four legs Yes, it does.2._____she____(do)her homework every day 3._____you_____(live)in Huanggang No, I don't.4._____he_____(need)a pair of shoes NO, he doesn't.
完成下列一般疑问句
Does
have
Does
do
Do
live
Does
need
01
02
03
04
主三单，谓s
V三单，与名词变复数一致
主三单，助does
将下列句子改为一般疑问句并作出肯定、否定回答。
I watch TV every day.
2. He watches TV every day.
3. Tom goes to school every day.
Do you watch TV every day
Yes ,I do. / No, I don’t.
Does he watch TV every day
Yes ,he does./No , he doesn’t.
Does he go to school every day
Yes ,he does./No , he doesn’t.
4.My fatherhas breakfast every day.5.Tom and Samgo to school every day.Doeshehavebreakfast every day Yes ,he does./No , he doesn’t.Dothey go to school every day Yes ,they do./No , they don’t6.Your sisterdoes her homework.Doesshedoher homework Yes , she does./No , she doesn’t.01
02
03
04
主三单，谓s
V三单，与名词变复数一致
does是面照妖镜，后面动词现原形。
主三单，助does
7. His dog eats some bananas.
8. The cat eats a fish.
9. Sam carries a big box.
10. Tom’s sister studies English.
Does it eat some bananas
Yes ,it does./No , it doesn’t.
Does it eat a fish
Yes ,it does./No , it doesn’t.
Does he carry a big box
Yes ,he does./No , he doesn’t.
Does she study English .
Yes ,she does./No , she doesn’t.
01
02
03
04
主三单，谓s
V三单，与名词变复数一致
does是面照妖镜，后面动词现原形。
主三单，助does
三 单