现在完成时PPT
合集下载
初二人教英语现在完成时态课件(共25张PPT)
常见非延续性动词和延续性动词的转变
❖ arrive/come/go to be in
die
be dead
❖ become a
be a borrow
keep
❖ Leave/ move
be away / be out
❖ buy
have open
be open
❖ join
be in/a member of
5. --How many times _h_a_v_e____ you __r_e_a_d___ (read) this book?
❖ --I _h_a_v_e_r_e_a_d_ (read) it several times.
6. My brotherb_ou_g_h_t____ (buy) a car last month.
❖ The twins have joined the army. (since they are 18years old) The twins have been soldiers/ been in the army since they are 18years old.
-- When c_a_m_e_____ she _________ (come)? -- She ________ (come) just now.
I lived there 2 years ago
past
present
I have lived here for two years
❖ 1.都表示过去发生的事 ❖ 2.现在完成时强调过去和现在的联系，不能和具
定回答） He has already finished a story book.
4.He finished reading a story- book. （改成现在完成时）
现在完成时讲解(完整版)(共17张PPT)
3. My sister has had her cell phone _____fo_ra month .
4. My friends haven’t visited me ___s_in_c_efew days ago.
5. We haven’t used our car _____faorlong time .
I have planted all the trees. 注：主语假设是第三人称单数助动词用 has
finished 9. goes 10. have, found 11. is He’ll be back soon.
Where’s Li Ming ? He __________ (go) to the teacher’s office.
否认形式 haven’t ( have not 〕 +过去分词 I ________ (see) it last week.
Where’s Li Ming ? He __________ (go) to the teacher’s office.
hasn’t ( has not ) +过去分词 have, stayed 8.
have, finished
have, stayed
• 1. have, seen, saw 2. Has, finished 3. has, —Yes, I ___________ New York twice.
You have planted all the trees. since: (自…以来)
6. She hasn’t had a good cup of coffee _____yefaorrs.
7. Tom has worn glasses _______he was 7 years old. since
4. My friends haven’t visited me ___s_in_c_efew days ago.
5. We haven’t used our car _____faorlong time .
I have planted all the trees. 注：主语假设是第三人称单数助动词用 has
finished 9. goes 10. have, found 11. is He’ll be back soon.
Where’s Li Ming ? He __________ (go) to the teacher’s office.
否认形式 haven’t ( have not 〕 +过去分词 I ________ (see) it last week.
Where’s Li Ming ? He __________ (go) to the teacher’s office.
hasn’t ( has not ) +过去分词 have, stayed 8.
have, finished
have, stayed
• 1. have, seen, saw 2. Has, finished 3. has, —Yes, I ___________ New York twice.
You have planted all the trees. since: (自…以来)
6. She hasn’t had a good cup of coffee _____yefaorrs.
7. Tom has worn glasses _______he was 7 years old. since
初中现在完成时讲解ppt
for
since
for
since
for
since
练习题: 1.It's a long time since we ____ (meet) last, isn't it? 2.--I know you ___________ (choose) a picture book among these. --Yes,Have a look at it, please. 3.So far, spaceships without people ___________ (reach) the moon and some other parts of the universe. 4.My father____ home for nearly three weeks. A.has gone away from B.has left C.has been away from D.went away 5.Mr. and Mrs. Green have_____in China for a week. A.been B.got C.arrived D.reached
eg.--- I’ve lived here for 15 years. eg.--- I’ve lived here since 15 years ago(1990)
选用for和since填空: 1.We haven’t seen each other ______ a long time. 2.His father has been in the factory ______ 10 years ago. 3.The film has been on ______ 20 minutes. 4.Mr Green has worked here ______ he came to China. 5.His grandparents have been dead ______ several years. 6. It’s five years _______ we met last time
since
for
since
for
since
练习题: 1.It's a long time since we ____ (meet) last, isn't it? 2.--I know you ___________ (choose) a picture book among these. --Yes,Have a look at it, please. 3.So far, spaceships without people ___________ (reach) the moon and some other parts of the universe. 4.My father____ home for nearly three weeks. A.has gone away from B.has left C.has been away from D.went away 5.Mr. and Mrs. Green have_____in China for a week. A.been B.got C.arrived D.reached
eg.--- I’ve lived here for 15 years. eg.--- I’ve lived here since 15 years ago(1990)
选用for和since填空: 1.We haven’t seen each other ______ a long time. 2.His father has been in the factory ______ 10 years ago. 3.The film has been on ______ 20 minutes. 4.Mr Green has worked here ______ he came to China. 5.His grandparents have been dead ______ several years. 6. It’s five years _______ we met last time
现在完成时ppt精品课件
B: Where did you buy it?
A: I bought it in my hometown. A: have you seen the film? B: Yes, I have. A: When did you see it? B: I saw it last Sunday.
现在完成时不能与表示过去的时间状语连 用，常与之连用的时间状语有：
6. Mr. Brown has had his TV __f_o_r__ 15 years. 7. I’ve taken driving lessons __s_in_c_e__last month.
8. My sister has had her cell phone _f_o_r___a month .
He studied English for five years.
（只说明他过去学过五年英语，但现在不学了。）
❖ I’ve lived here for ten years. 我在这里住了 10年。(现在仍住这儿)
❖ I lived here for ten years. 我在这里住过10 年。(现在不住这儿了)
再加“ ed ”。 ， study---studied---studied
cry---cried---cried
(4)、重读闭音节结尾，末尾只有一个辅音字母， 先双写该辅音字母，再加“ ed ”。
stop---stopped---stopped drop---dropped--dropped
2、不规则变化
当有 so far, in/during/over the past/ last few days(在过去/最近的几年里)，since 接过去时间状语或过去时的句子等常用 现在完成时 (不能与确定的时间)
高三英语现在完成时与过去完成时课件(共19张PPT)
A: What had you done before you I _h__a_d_w__a_tc_h_e_d__(watch) TV.
A: What __a_re___ you _d_o_i_n_g__(do) now?
B: I __a_m__w_r_i_t_in_g___(write) a letter to my friend Tom.
The Past Perfect Tense 过去完成时态
have/has+过去分词
1.现在完成时态表示过去发生的动作对现在造成的影响或 结果
Our teacher has left. We have studied English. I have already finished the homework. He has had his lunch. He has become a doctor.
5. 根据上下文判断 I went to Li Hong’s house, but he ___h_a_d_g_o_n__e__(go) out.
Fill in each blank with the proper verb form: 1. He said that he _h_a_d__w_r_it_t_e_n_ (write) that letter.
So
I
__a_m__a_n_s_w_e_r_i_n(ganswer)
his
A: When _w__il_l____ you ___p_o_s_t__(post) it?
B: I _w_i_l_l _p_o_st__(post) it as soon as I _f_in__is_h___(finish) writing.
5. Mary told me she __h_a_d__m__et___(meet) my mother before.
《现在完成时态》ppt课件
REPORT
现在完成时态
CATALOG
DATE
ANALYSIS
SUMMARY
目录
CONTENTS
• 现在完成时态的定义 • 现在完成时态的用法 • 现在完成时态与一般过去时的区别 • 现在完成时态的特殊用法 • 现在完成时态的练习与解析
REPORT
CATALOG
DATE
ANALYSIS
SUMMAR Y
翻译练习
总结词
跨文化理解
总结词
句型转换能力
详细描述
通过将英文句子翻译成中文，学生可以更 好地理解现在完成时态在中文表达中的对 应形式，促进跨文化交流和理解。
详细描述
翻译练习不仅要求学生掌握时态的转换， 还需要注意句型的变化和语言的流畅性， 有助于提高学生的语言运用能力。
REPORT
THANKS
感谢观看
用于描述过去发生的某个事件或经历， 并强调该事件或经历对现在的影响或 结果。
用于表达对过去某个时间点或时期的 情况的回忆或回顾。
REPORT
CATALOG
DATE
ANALYSIS
SUMMAR Y
03
现在完成时态与一般过 去时的区别
时间点的区别
01
过去时描述过去某个时间点发生 的事情，强调事情发生的时间点 。
CATALOG
DATE
ANALYSIS
SUMMAR Y
这个句子中的“Have you seen” 表示询问对方是否已经完成了动 作“看电影”，强调了动作的完
成状态。
REPORT
CATALOG
DATE
ANALYSIS
ቤተ መጻሕፍቲ ባይዱ
SUMMAR Y
05
现在完成时态
CATALOG
DATE
ANALYSIS
SUMMARY
目录
CONTENTS
• 现在完成时态的定义 • 现在完成时态的用法 • 现在完成时态与一般过去时的区别 • 现在完成时态的特殊用法 • 现在完成时态的练习与解析
REPORT
CATALOG
DATE
ANALYSIS
SUMMAR Y
翻译练习
总结词
跨文化理解
总结词
句型转换能力
详细描述
通过将英文句子翻译成中文，学生可以更 好地理解现在完成时态在中文表达中的对 应形式，促进跨文化交流和理解。
详细描述
翻译练习不仅要求学生掌握时态的转换， 还需要注意句型的变化和语言的流畅性， 有助于提高学生的语言运用能力。
REPORT
THANKS
感谢观看
用于描述过去发生的某个事件或经历， 并强调该事件或经历对现在的影响或 结果。
用于表达对过去某个时间点或时期的 情况的回忆或回顾。
REPORT
CATALOG
DATE
ANALYSIS
SUMMAR Y
03
现在完成时态与一般过 去时的区别
时间点的区别
01
过去时描述过去某个时间点发生 的事情，强调事情发生的时间点 。
CATALOG
DATE
ANALYSIS
SUMMAR Y
这个句子中的“Have you seen” 表示询问对方是否已经完成了动 作“看电影”，强调了动作的完
成状态。
REPORT
CATALOG
DATE
ANALYSIS
ቤተ መጻሕፍቲ ባይዱ
SUMMAR Y
05
初中英语现在完成时(共25张PPT)
双写辅音字母＋ed. 如：plan, stop,drop,fit(适 合), prefer(更喜欢), travel 4.以辅音字母＋y，结尾，变y为i＋ed try, study, carry, hurry, cry, worry,copy
1.肯定句:
主语+have/has(助动词）+过去分词+(其他）。
5. Sally joined the League two years ago.
Sally _______________ the League for two years.
has been in
比较延续性动词与瞬间性动词
延续性动词：表示可以延续一段时间的动作或状态。如： be,drink,fly,eat,keep,lie,live,rain等。 瞬间性动词：表示不能延续的动作，即动作发生后立即结束。如：
6. He left here 2 years ago.
--- He has been away from here for 2 years.
7. The film began 30 minutes ago. --- The film has been on for 30 minutes.
3.The meeting began two minutes ago.
The meeting __h_a__s_b_e_e_n__o_n_____ for two minutes.
4.We borrowed two books last week.
We __h_a__v_e_k__e_p_t____ the two books for a week.
They have left. --他们已经离开了,也就是说现在他们人不在这里 I have had my lunch. --我已经吃过午饭了,也就是说我现在不饿
1.肯定句:
主语+have/has(助动词）+过去分词+(其他）。
5. Sally joined the League two years ago.
Sally _______________ the League for two years.
has been in
比较延续性动词与瞬间性动词
延续性动词：表示可以延续一段时间的动作或状态。如： be,drink,fly,eat,keep,lie,live,rain等。 瞬间性动词：表示不能延续的动作，即动作发生后立即结束。如：
6. He left here 2 years ago.
--- He has been away from here for 2 years.
7. The film began 30 minutes ago. --- The film has been on for 30 minutes.
3.The meeting began two minutes ago.
The meeting __h_a__s_b_e_e_n__o_n_____ for two minutes.
4.We borrowed two books last week.
We __h_a__v_e_k__e_p_t____ the two books for a week.
They have left. --他们已经离开了,也就是说现在他们人不在这里 I have had my lunch. --我已经吃过午饭了,也就是说我现在不饿
现在完成时(16张PPT)初中英语专项复习课件
考查现在完成时标志词。题1中，15 days为时间段， 选用for。题2、3中， 7 o’clock和1974为时间点，选 用since。
【典例2】My parents ________Nanjing twice.
A. have gone to B. have been to
C. have been in
易错点1 现在完成时常见标志词辨析
ever用于疑问句，意为“曾经”，位于句中 Have you ever eaten fish?
never含否定意义，意为“从不”，位于句中 I have never eaten fish.
易错点1 现在完成时常见标志词辨析
just多用于肯定句， 意为“刚刚”，位于句中 I have just had my lunch.
B. yet
C. ever
D. still
考查现在完成时标志词。句意：他曾去过上海吗？ 由题目可知为现在完成时。根据句意“曾经”， 选用ever。
【典例5】Have you met Mr Li ______？
A. just
B. ago
C. before D. a moment ago
考查现在完成时标志词。句意：你以前见过李先生 吗？ago用于一般过去时，just用于句中，答案只能 选C。
before用于所有句式， 意为“……之前”，位于句末
She hasn’t seen you before.
易错点2 since/for用法辨析
since
since+时间点 He has lived in China since 1992.
since+ 时间段+ ago John has been a football player since 3 years ago.
【典例2】My parents ________Nanjing twice.
A. have gone to B. have been to
C. have been in
易错点1 现在完成时常见标志词辨析
ever用于疑问句，意为“曾经”，位于句中 Have you ever eaten fish?
never含否定意义，意为“从不”，位于句中 I have never eaten fish.
易错点1 现在完成时常见标志词辨析
just多用于肯定句， 意为“刚刚”，位于句中 I have just had my lunch.
B. yet
C. ever
D. still
考查现在完成时标志词。句意：他曾去过上海吗？ 由题目可知为现在完成时。根据句意“曾经”， 选用ever。
【典例5】Have you met Mr Li ______？
A. just
B. ago
C. before D. a moment ago
考查现在完成时标志词。句意：你以前见过李先生 吗？ago用于一般过去时，just用于句中，答案只能 选C。
before用于所有句式， 意为“……之前”，位于句末
She hasn’t seen you before.
易错点2 since/for用法辨析
since
since+时间点 He has lived in China since 1992.
since+ 时间段+ ago John has been a football player since 3 years ago.
初二英语《现在完成时》PPT课件
5. We have started to look at other planets. ( just ) ________________________________ We have just started to look at other ______. planets 6. The space shuttle has returned from a visit to the space station.( just ) _______________________________ The space shuttle has just returned ___________________________. from a visit to the space station
Bill: They’ve already (5)_______ found
(find) that there’s no life on
the moon. Nicky: Yes, that’s right. So far there’s only life on earth.
Complete the passage with the words in the box. already been haven’t just never read written yet Dear Diary, I’ve (1)_____ just finished reading a great book at school. I haven’t (2)______ read anything as good as that for a long time! It is a book about the solar system. It is so good
现在完成时ppt课件
((√×))
He has joined the League member for two years. ( ×)
√ He has been a League member for two years. ( )
他已入团两年了。
The man has been dead for several years. The man has died for several years. 这个人已经死了几年了。
• Mr. Green _h_a_s__b_e_e_n_ (be) in China these
years.
• They _h__a_v_e_w_r_i_t_te_n_(write) 15 songs so far.
• The population __h_a_s__g_r_o_w_n__ (grow) more
slowly in the past ten years.
现在完成时的谓语动词
1延续性动词：learn, work, know, walk, keep, have, wait, sing, read, sleep, live, stay
延续性动词用法特征： 延续性动词可以用于现在完成时，其完成时态可与表 示一段时间的状语连用。（for ten years, since last year, since two years ago, during the past three years, how long等）
have been to 曾经去过某地（已返回）
Someone went to some place and has already
come ban 去某地一段时间
someone stay in some place for some time
初中英语现在完成时讲解全(共24张PPT)
I studied English ten years ago.
（come来到某地….
left the team
has been on C.
表示动作发生在过去，对现在造成的影响。
)
be over
went to bed
填空使用for和since
Tom ___for several hours.
表示动作发生在过去，对现在造成的影响。
• She has lived here ______1996.
• 2 标准词：so far/up to now (到目前为止） ;lately/recently(最近）
• Up to now/So far ,I haven’t been successful.
• Lately/Recently,I haven’t seen my teacher.
3. He bought the motorbike a month ago.
---He ____ ____ the motorbike for a month. 4. He arrived here three days ago.
--- He ____ ____ here since three days ago. 5. They turned off the light 2 hours ago.
(finish结束....)
be over
1.我买这本书三年了。Buy I have bought the book.
(1) I have had the book for 3 years. (2) I have had the book since 3 years ago.
了borrow He has borrow the book. (1）He has kept the book for 2 months . (2) He has kept the book since 2 months ago.
《现在完成时》课件
到达之前信已经寄出，强调时间上的先后顺序。
05
CATALOGUE
现在完成时的练习与巩固
选择题练习
总结词
考察对现在完成时的理解
详细描述
设计多个选择题，选项中包括现在完成时的正确形式和常见的错误形式，让学生通过选择题练习加深 对现在完成时的理解。
填空题练习
总结词
检验对现在完成时的掌握程度
详细描述
提供句子，让学生填写正确的现在完 成时态，通过填空题练习，让学生在 实际运用中掌握现在完成时的正确形 式。
翻译练习
总结词
提升对现在完成时的运用能力
详细描述
选取一些中文句子，要求学生将其翻译成英文，并确保使用 正确的现在完成时态。通过翻译练习，让学生在实际语境中 运用现在完成时，提高语言运用能力。
THANKS
感谢观看
混淆现在完成时和一般现在时
总结词
两者都表示现在的状态或动作，但意义不同。
详细描述
现在完成时表示某个动作已经完成并对现在有影响，而一般现在时只是描述现在 的情况或习惯性的动作。例如，“I have finished my homework”表示作业已 经完成，而“I finish my homework every day”只是表示每天的作业习惯。
结构
have/has + 过去分词
用法
描述过去发生的动作对现在的影响或结果，强调 动作的完成和现在的状态。
现在完成时的基本结构
基本结构
主语 + have/has + 过去分词 + 其他成分
注意事项
过去分词的形式必须与主成时的时态标志
时态标志
have/has + 过去分词
例子
05
CATALOGUE
现在完成时的练习与巩固
选择题练习
总结词
考察对现在完成时的理解
详细描述
设计多个选择题，选项中包括现在完成时的正确形式和常见的错误形式，让学生通过选择题练习加深 对现在完成时的理解。
填空题练习
总结词
检验对现在完成时的掌握程度
详细描述
提供句子，让学生填写正确的现在完 成时态，通过填空题练习，让学生在 实际运用中掌握现在完成时的正确形 式。
翻译练习
总结词
提升对现在完成时的运用能力
详细描述
选取一些中文句子，要求学生将其翻译成英文，并确保使用 正确的现在完成时态。通过翻译练习，让学生在实际语境中 运用现在完成时，提高语言运用能力。
THANKS
感谢观看
混淆现在完成时和一般现在时
总结词
两者都表示现在的状态或动作，但意义不同。
详细描述
现在完成时表示某个动作已经完成并对现在有影响，而一般现在时只是描述现在 的情况或习惯性的动作。例如，“I have finished my homework”表示作业已 经完成，而“I finish my homework every day”只是表示每天的作业习惯。
结构
have/has + 过去分词
用法
描述过去发生的动作对现在的影响或结果，强调 动作的完成和现在的状态。
现在完成时的基本结构
基本结构
主语 + have/has + 过去分词 + 其他成分
注意事项
过去分词的形式必须与主成时的时态标志
时态标志
have/has + 过去分词
例子
现在完成时语法课件
翻译句 子：
1. 吉姆买了这只钢笔两年了。
2. 李雷已经入党两年了。
3. 那部电影开始30分钟了。 ○ Jim ____ _____the pen for two years. ○ Li Lei ____ ____ ____the Party for two years. ○ The film ____ ____ _____for thirty minutes.
•常见非延续性动词与延续性动词(或状态动 词)的对应关系如下: •open--b--e- open close-b--efall asleep--b-e- asleep closed
•die----b--e dead becombe---
•begin/start---b-e- on
•come/go/arrive/get/reach/mobveei-n-/--a-t-
have/has been in
1.Where is Jim? Hheas gone
Wuhan.
to have been
2. My parenttos
the Great Wall
tHwaicvee. They likbeetehnerteo very much.
•
yohuasever
valley?
曾经去过某地（表示某人的一种 经历）,可与once, twice, already, ever, never等连用。
逗留在某地(已经一段时间)，常 3.Say the differences:和hheafvroee/r等htaes连nb用eden。atyos,since I came
have/has gone to
时间 状语：
already, yet, ever, never, just, before；
《现在完成时》PPT课件
week. has been • So she _________(be) in the club for nearly • one week.
不规则动词的过去式以及过去分词 巧记规律
• AAA: put– put –put let—let –let • ABA: become—became—become • ABB: stand—stood—stood • ABC: eat— ate—eaten
Eg. I have already done my homework.
否定句: I haven’t done my homework 一般疑问句ye: tH. ave you done your
homework yet?
3. ever在现在完成时中的用法
肯定句/疑问句 : 句中 “曾经” Eg. I’ve ever been to Beijing.
AAA
• cost-cost-cost read
read-read-
• put-put-put
cut-cut-cut
• let-let-let
set-set-set
• beat-beat-beat
hit-hit-hit
• hurt-hurt-hurt
spit-spit-spit
• 一、原形、过去式和过去分词的词形和读音都相 同的单词，结尾字母一般是t或d。
Eg. He has ever made dumplings.
否定句: He has never made Havedtuhmeypelivnegrs.travelled by train?
No, never.
5. just在现在完成时中的用法
用于句中, 表示“刚刚” Eg. I’ve just had breakfast.
不规则动词的过去式以及过去分词 巧记规律
• AAA: put– put –put let—let –let • ABA: become—became—become • ABB: stand—stood—stood • ABC: eat— ate—eaten
Eg. I have already done my homework.
否定句: I haven’t done my homework 一般疑问句ye: tH. ave you done your
homework yet?
3. ever在现在完成时中的用法
肯定句/疑问句 : 句中 “曾经” Eg. I’ve ever been to Beijing.
AAA
• cost-cost-cost read
read-read-
• put-put-put
cut-cut-cut
• let-let-let
set-set-set
• beat-beat-beat
hit-hit-hit
• hurt-hurt-hurt
spit-spit-spit
• 一、原形、过去式和过去分词的词形和读音都相 同的单词，结尾字母一般是t或d。
Eg. He has ever made dumplings.
否定句: He has never made Havedtuhmeypelivnegrs.travelled by train?
No, never.
5. just在现在完成时中的用法
用于句中, 表示“刚刚” Eg. I’ve just had breakfast.
现在完成时的课件PPT
肯定句表达注意事项
01
注意区分现在完成时与一般过去时的用法，现在完成时 强调过去发生的动作对现在的影响，而一般过去时只表 示过去的某个动作或状态。
02
注意have/has的变形，当主语为第三人称单数时， have要变为has。
03
过去分词的变化规则需要掌握，包括规则变化和不规则 变化。
03 现在完成时否定句式
针对性辅导
拓展延伸
根据学生的实际情况，教师进行拓展 延伸，提供更多相关知识和练习题目 ，帮助学生进一步提高现在完成时的 运用能力。
针对学生在练习中暴露出的问题，教 师进行针对性辅导，帮助学生解决问 题。
1.谢谢聆 听
肯定句
主语 + have/has + 过 去分词 + 其他成分。
否定句
主语 + have/has + not + 过去分词 + 其 他成分。
疑问句
Have/Has + 主语 + 过去分词 + 其他成分 ？
简略回答
Yes, 主语 + have/has. 或 No, 主语 + haven't/hasn't.
否定句表达注意事项
注意区分现在完成时与一般过去时
现在完成时强调过去发生的动作对现在造成的影响或结果，而一般过去时只表示过去某个时间发生的 动作或存在的状态。
注意have/has的否定缩写形式
have not=haven't，has not=hasn't。
现在完成时疑问句式和回答方
04
式
疑问句构成及用法
特点
具有现在相关的时间参照点，强 调过去动作与现在的联系。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
瞬间动词可以用于现在完成时，但不能和表 示一段时间的状语连用。如可说“He has left.”但 不能说“He has left for three years.” 如果要表达 “他已走了三年了”可用以下几种表达法：
一.换时态：用ago,使用一般过去时。
He left here three years ago.
7. 结尾的字母d变t。如： lend → lent → lent; build → built → built; send → sent → sent 8. 变为以-ought或-aught结尾。如： buy → bought → bought; bring → brought → brought; catch → caught → caught; teach → taught → taught
过去分词的构成： 一、规则变化： 1. 一般在动词词尾直接加ed。如： pick → picked → picked; wish → wished → wished; stay → stayed → stayed 2. 以不发音的e结尾的动词后面加d。如： like → liked → liked; hope → hoped → hoped; phone → phoned → phoned
have a cold be
keep
2.转换成be+名词/介词短语
join the army
join the Party go to school
be a soldier/be in the army be a Party member be a student/ be in school
3转换成be+形容词或副词 die leave close be dead finish be over begin
3. 以“辅音字母 + y”结尾的动词，变y为i， 再加-ed。如： study → studied → studied; hurry → hurried → hurried; reply → replied → replied 4. 词尾只有一个辅音字母的重读闭音节动 词，要双写辅音字母，再加-ed。如： stop → stopped → stopped; clap学：关志艳
现在完成时 Present perfect tense 用法一： 表示过去开始的动作或状态已经结束，但是 对现在有影响（强调结果现在还存在）
构成:
助动词have/has + 过去分词
1.肯定句 主语+have +过去分词+其他. 主语（三单)+has +动词过去分词+其他.
2.疑问句:Have/Has+主语+过去分词+…. 回答用Yes，---have/has． “No，---haven’t/hasn’t．
二、不规则变化： （见课本136页） 5. 以不变应万变。如： let → let → let; put → put → put; read → read → read 6. 若中间有双写e，则去掉一个e，单词 末尾再加t。如： feel → felt → felt; keep → kept → kept; sleep → slept → slept
用法二：表示过去已经开始，持续到现在的动 作或状态，也可以表示一直持续到现在并可能 还将持续下去。 A 动词使用延续性动词。 B 和表时间段的时间状语连用。常与for或since 引导的时间连用so far, up to/till now, in the last/past+一段时间，all one’s life, by now, these days,for+时间段，since+时间点/从句(从句时态 为一般过去时) She has learnt English for 3 years.她学英语有 三年了 I have lived here since 1990.自从1990年以来 我一直住在这儿
3.否定句： 现在完成时的否定句式是 “主语+have/has+not+过去分词+……”. 4.特殊疑问句句型 特殊疑问词+have/has+主语+过去分词+…….
How many times have you been to the Great Wall?
How long have you known each other? 与表示时间副词 just （刚刚）,already（已经(肯定句) before, （一般疑问(句末） ： yet已经；否定句：还） never, ever (疑问句) twice recently(近来）等状语连用
以上三种表示方法适用于所有瞬间动词。
另外，还可用其它表示方法，但只适用于部分瞬间动 词。具体办法是将瞬间动词转化为表延续的动词或者表状 态的be+名词／形容词或副词／介词短语等。
换动词
1.直接转化成延续性动词 buy borrow
have
catch (get) a cold come/go/become
For example:
1 He has become a doctor.他已经成为一名医生 He has been a doctor for five years.他当医生已 经五年了。
2 His grandfather has died.他爷爷已去世了。 His grandfather has been dead for ten years.他 爷爷已经去世10年了。 3 The film has begun.电影已经开始了。 The film has been on for five minutes.电影已经 开始5分钟了。
二.换结构：1.用“It is +一段时间＋since ＋一般过去时从句
It is three years since he left here.
Three years has passed since he left here.
2.“ 一段时间＋has passed + since + 一般过去时从句”