资源简介

(共24张PPT)
Grammar
Present Perfect Tense
Unit 5 Travel
学习目标
通过本节课学习，学生能够：
1.掌握现在完成时的基本结构和功能，理解其表示过去动作对现在的影响或持续状态的核心含义。（学习理解）
2.正确运用现在完成时的肯定、否定、疑问句式进行造句和转换，并能在具体语境中选择使用for或since；区分并正确使用have been to和have gone to表达不同的语义，避免常见错误。（应用实践）
3.在给定的情境中，综合运用现在完成时描述旅行经历或生活变化，完成真实的交际任务。（迁移创新）
Contents
Lead in
1
Presentation
2
Practice
3
Exercise
4
Summary
6
Homework
5
Lead in
What do you notice
You’ve grown one strawberry.
Cheeky little birds have eaten all the rest.
You’ve come to the right place.
Have you picked a lot of strawberries
Perhaps they have just eaten too many.
They have just arrived at the strawberry farm.
现在完成时
结构：
have/has + done (过去分词)
现在完成时
Presentation
定义1：
表示从过去开始并延续到现在，可能还将延续下去。
eg: a) He has lived here for ten years.
他在这里已经住了十年了。
b) I have been a teacher since 2015.
我从2015年起就当老师了。
现在完成时
Presentation
定义2：
表示过去发生的某一动作对现在造成的影响或结果。
eg：a) Have you seen that movie yet 你看过那部电影了吗？
询问过去的经历对现在认知的影响。
b) We have never been to Beijing. 我们从未去过北京。
过去的经历 → 对现在的影响：我们现在对北京不熟悉。
现在完成时的构成
Presentation
1.肯定句：
eg：a) I have finished my homework.
我已经做完作业了。
b) She has seen that movie three times.
那部电影她已经看了三遍了。
结构：主语+have/has + 动词的过去分词(+其他).
现在完成时的构成
Presentation
2.否定句：
eg：a) I have not (haven't) finished my homework yet.
我还没做完作业。
b) He has not (hasn't) seen the new teacher.
他还没见过新老师。
结构： 主语 + have not (haven't)/has not (hasn't) +动词的过去分词 (+ 其他).
现在完成时的构成
Presentation
3.一般疑问句：
eg：Have you finished your homework
—Yes, I have. / No, I haven't.
结构：Have/Has + 主语 +动词的过去分词 (+ 其他)
肯定回答:Yes，主语 +have/ has.
否定回答:No，主语+haven't/ hasn't.
现在完成时的构成
Presentation
4.特殊疑问句：
eg：a)Where has she gone
她去哪儿了？
b) How long have you lived here
你在这里住多久了？
结构： 特殊疑问词 + have/has + 主语 +动词的过去分词
Rewrite the following sentences.
1.She has already booked the flight tickets. (改为一般疑问句)
2.They have visited the Great Wall. (改为否定句)
3.I have lived in Shanghai for ten years. (对划线部分提问)
4.He has worked in the company since he graduated. (改为一般疑问句)
5.Have they told you the news (肯定回答)
Has she booked the flight tickets yet
They haven’t visited the Great Wall.
How long have you lived in Shanghai
Has he worked in the company since he graduated
Yes, they have.
Practice
动词的过去分词的构成
Presentation
1.规则动词的变化规则
（1）大部分动词在词尾直接加 -ed
work → worked ask → asked play→ played
（2）动词以不发音的字母e结尾时，直接加 -d
move → moved use → used love → loved
（3）动词以“辅音字母+y”结尾时,变y为i再加 -ed
worry → worried study → studied try → tried
（4）动词为重读闭音节且词尾只有一个辅音字母时,须双写这个辅音字母再加-ed
plan → planned stop → stopped prefer → preferred
注意： 如果是“元音字母 + y”结尾，则直接加 -ed。
play - played enjoy - enjoyed
动词的过去分词的构成
Presentation
2.不规则动词的变化规则
（1） AAA型：原形、过去式、过去分词三者同形
put-put-put cut-cut-cut let-let-let
（2）ABB型：过去式和过去分词同形
make-made-made buy-bought-bought teach-taught-taught
（3）ABA型：原形和过去分词同形
become-became-become run-ran-run come-came-come
（4）ABC型：原形、过去式、过去分词三者都不同
go-went -gone see-saw-seen take - took-taken
（5）AAB型：原形和过去式同型
beat-beat-beaten
Write out the past participles of the following words.
1.finish
2.cook
3.try
4.put_____
5.let
6.build
7.drop
8.move
9.go
10.is
11.sing
12.learn
13.write
14.break
15.see
finished
cooked
tried
put
let
built
dropped
moved
gone
been
sung
learnt
written
broken
seen
Practice
现在完成时的标志
Presentation
1.肯定句:already已经/just刚刚/ever曾经
eg: I have already finished my homework.
He has just left.
2.否定句:yet 还，仍然/ never从不
eg: She hasn't arrived yet.
I have never seen a panda.
3.疑问句:ever曾经/yet还，仍然
eg: Have you ever been to Beijing
Have you done it yet
现在完成时的标志
Presentation
4. for+时间段
过去时间点
since+ 时间段+ago
一般过去时的句子
eg: He has read the book for two weeks.
He has read the book since last Friday.
I haven't played soccer since I left school.
辨析：have been to 和have gone to
Presentation
1. Have/Has been to :曾经去过某地, 已回
说话时，人已经回来了，不在那个地方了。
eg: I have been to Beijing twice.
2. Have/Has gone to:已经去了某地，未回
说话时，人已经在那个地方，或者正在去的路上，尚未回来。
eg:— Where is Tom — He has gone to the library.
Practice
用for 或 since 填空。
1.Mr. Wang has taught in this school ________ ten years.
2.I have waited for you ________ 8 o'clock this morning.
3.She has been ill ________ a long time.
4.They have been friends ________ they were in primary school.
5.He hasn't played football ________ last month.
for
since
for
since
since
一、单选选择题。
1. My father ______ to Shanghai. He will be back in a week.
A. has been B. has gone C. went D. goes
2. — ______ you _____ your key — Yes, I _____ it under the bed.
A. Have; found; have found B. Did; find; found
C. Have; found; found D. Did; find; have found
3. We have learned English ________ about five years.
A. since B. for C. in D. at
4. His uncle ________ a soldier since 2018.
A. is B. was C. has been D. will be
5. — Hurry up! The concert is going to start.
— Don't worry. We still have 20 minutes. It _______ yet.
A. hasn't started B. hasn't been started C. didn't start D. wasn't started
Exercise
Exercise
二、句型转换。
1.I have already read this book. (改为一般疑问句)
________ you ________ this book ________
2.He has lived here for ten years. (对划线部分提问)
________ ________ has he lived here
3.She has already had lunch. (改为否定句)
She ________ ________ lunch ________.
4.The meeting has begun. (用just改写句子)
The meeting _______ _______ _______.
Have read yet
How long
hasn’t had yet
has just begun
Exercise
三、撰写一段短文，词数40词左右，描述你的一位家人或朋友最近的一次旅行经历，要求使用现在完成时并包含for/since时间状语。
My cousin has just returned from Guilin. She has been there for five days. Since she arrived, she has visited the Li River and climbed many beautiful hills. She has taken lots of photos and has already shared them with me. She says she has never seen such green water before.
Summary
1. what present perfect tense is.
2.structure of the present perfect tense.
Present Perfect Tense
We have learnt:
3. formation of the past participle.
4. have been to vs. have gone to.
5.常与just, already, yet, ever, never, for, since 等连用。
Homework
Must do:
1.背诵本节课重点语法；
2.完成课后的相关练习;
3.用现在完成时及提示词编写5个关于个人经历的完整句子。
Choose to do:
小组对话创作：设计一个包含4个话轮的情景对话，需自然运用have been to和have gone to，并在下节课表演出来。
Thank you

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