一般现在时 VS 一般过去时（课件共21张ppt）

(共21张PPT)
一现VS一过
2022 秋
Contents
目录
二 一般现在时
一 Lead in
三 一般过去时
四 Consolidation
一、Lead in
Joe: Hi, Alice. You don’t look good.
Alice: I’m very sad now.
Joe: What happened
Alice: I lost my toy dog.
Joe: Look! Is this your toy dog
Alice: Yes, it is. Where did you find it
Joe: I found it under the chair.
找一找：
上面的对话出现了几种时态？分别是什么？
二、一般现在时
定义：
表示经常性，习惯性的动作或状态。
构成：表动作 主语 + do / does + 其它
表状态 主语 + am / is / are + 其它
注意：结构里的do和does代表的是实意动词原形和三单
一般现在时：时间标志词
①频率副词：always, usually, often, sometimes
②every系列：every day每天，every week每周…
③on＋星期复数系列：on Mondays, on Tuesdays…
记忆口诀：
总经常 always usually often
有每没 sometimes every never
复星周 on Mondays
一般现在时：动词三单变化
①直接加s clean-cleans cook-cooks
②以s, ch, x, sh, o结尾，加es watch-watches
③ 辅音字母加y结尾，变y为i加es fly-flies
④特殊变化 have 变 has
一般现在时句型转化：主非三单
I clean my bedroom on Mondays.
否定句：
I don’t clean my bedroom on Mondays.
一般疑问句：
Do you clean your bedroom on Mondays
肯定回答：Yes, I do.
否定回答：No, I don’t.
一般现在时句型转化：主三单
He rides a bike to school.
否定句：
He doesn’t ride a bike to school.
一般疑问句：
Does he ride a bike to school
肯定回答：Yes, he does.
否定回答：No, he doesn’t.
一般现在时句型结构：
肯定句：主语 + do / does + 其它；
否定句：主语 + do / doesn’t + do；
一般疑问句：Does / Do + 主语 + do sth.
肯定回答：Yes, 主语 + do / does.
否定回答：No, 主语 + don’t / doesn’t.
Practice Time:练习时间
1. She plays the piano every day.(改为一般疑问句）
___________________________________________________________________
2. My parents go to work by car.(改为一般疑问句并作肯定回答）
__________________________________________________________________
3. Mr. Smith does the housework every day. (改为否定句)
__________________________________________________________________
4. I want to have a swimming lesson. (改为否定句)
__________________________________________________________________
Does she play the piano every day
Do your parents go to work by car Yes, they do.
Mr. Smith doesn’t do the housework every day.
I don’t want to have a swimming lesson.
三、一般过去时
定义：
表示过去发生的动作或状态。
构成：表动作 主语 + 实意动词过去式 + 其它
表状态 主语 + was / were + 其它
一般过去时：时间标志词
① yesterday系列
yesterday afternoon； the day before yesterday
② last系列 上一个
last night; last month; last year
③ ago系列
long long ago; two days ago
④ in + 过去年份
in 2020
⑤ when I was…
when I was a little boy…
记忆口诀：
昨天上个ago前，in加年份when相连　
特殊：
just now 刚刚；刚才
this morning 今天早晨
one day 一天
……
一般过去时：动词过去式规则变化 + ed
①直：直接加 ed
②去：不发音e结尾，去e加 ed
③双：辅元辅结构，双写辅音字母加 ed
④改： 以辅音字母加y结尾，变y为i，加 ed
一般过去时：动词过去式不规则变化
am、is → was
are → were
do、does → did
can → could
have → had
go → went
…
一般过去时句型转化
Eric cleaned the kitchen yesterday.
否定句：
Eric didn’t clean the kitchen yesterday.
一般疑问句：
Did Eric clean the kitchen yesterday
肯定回答：Yes, he did.
否定回答：No, he didn’t.
一般过去时句型结构：
肯定句：主语 + did + 其它；
否定句：主语 + didn’t + do；
一般疑问句：Did + 主语 + do sth.
肯定回答：Yes, 主语 + did.
否定回答：No, 主语 + didn’t.
你能把下面的分别改为否定句和一般疑问句吗？
一般现在时
一般过去时
I am at home.
I was at home.
I can speak English.
I could speak English.
She does homework.
She did homework.
否定句：I am not at home.
一疑: Are you at home
I was not at home.
Were you at home
否定句：I can not speak English.
一疑：Can you speak English
I could not speak English.
Could you speak English.
否定句：She doesn’t do homework.
一疑：Does she do homework
She didn’t do homework.
Did she do homework
变否、变疑：有情有be直接用，无情无be找助动
Practice Time:练习时间
1. Liu Tao did the housework yesterday.(改为一般疑问句）
___________________________________________________________________
2. They went to the zoo last weekend.(改为一般疑问句并作肯定回答）
__________________________________________________________________
3. I was in the street ten minutes ago. (改为否定句)
__________________________________________________________________
4. I brought some cakes for lunch. (改为否定句)
__________________________________________________________________
Did Liu Tao do the housework yesterday
Did they go to the zoo last weekend Yes, they did.
I wasn’t in the street ten minutes ago.
I didn’t bring any cakes for lunch.
四、Consolidation
一、用所给词的适当形式填空。
1. He ________ (be) busy last week.
2. The men ________ (be) free yesterday.
3. It ________ (be) crowded in the park last Sunday.
4. My friends ________ (be) happy in this summer holiday.
6. -- What day ________ （be） it today -- It's Saturday.
7. ________ they ________ （like）swimming
8. ________ your parents ________ （read） newspapers every day
9. What ________ they often ________（do） on Saturdays
was
were
was
were
is
Do
like
Do
read
do
do
二、句型转换。
1. He played football yesterday.(改为一般疑问句）
___________________________________________________________________
2. I made some cakes for my friends.(改为否定句）
__________________________________________________________________
3. Did they clean the classroom last night (作否定回答）
___________________________________________________________________
4. He does his homework every evening.(用yesterday替换every evening)
___________________________________________________________________
5. Did you swim for two hours last weekend （作肯定回答）
_________________________________________________________________
6. Mr. Smith does morning exercises every day. (改为一般疑问句)
__________________________________________________________________
Did he play football yesterday
I didn’t make any cakes for my friends.
No, they didn’t.
He did his homework yesterday.
Yes, I did.
Does Mr. Smith do morning exercises every day
See you~