课题：8B Unit3 Grammar 课型：新授 课时安排 ：一课时
学生姓名 家长签名
【学习目标】1.了解一般过去时与现在完成时的区别。
2.能组织有一般现在时和现在完成时的句子。
【课前热身】 一、大声朗读并默写出下列单词,词组或句子。
1. 做梦，梦想vi.& vt. dream 2. 想象；梦想dream about/of 3. 护照n. passport
4. 实现你的梦想realize your dream 5. 进行在线旅游take an online tour
6. 你曾想象过没有护照环游世界吗？
Have you ever dreamt of travelling around the world without a passport?
7. 你可以通过在线旅游实现你的梦想。 You can realize your dream by taking an online tour.
(通过干某事 by doing sth ) 8. 向某人展示某物 show sb. sth. = show sth. to sb.
9. 昨天，丹尼尔向我展示了一个美国的网上旅游。
Yesterday Daniel showed me an online tour of the USA.
10. 我以前从未见过这么多出色的图片。
I have never seen so many wonderful pictures before.
11. 上周我买了一本美国名胜的书。
Last week，I bought a book about the places of interest in the USA.
12. 我父亲刚刚从美国返回，但我从未去过那儿。
My father has just returned from the USA, but I have never been there.
二、认真完成书本P40、41、42的练习。.
通过预习，哪些方面你还存在疑问
【学海拾贝】
1. dream vi.& vt. 做梦，梦想 dream about/of 想象；梦想
e.g. 你在夜里经常做梦吗？ Do you often ______________________ at night?
我有时梦见我的父母。 I sometimes ____________ ___________ my parents.
我一心想当个教师。 I _________ __________ becoming a teacher.
2. (1) Daniel 两年前去了北京。Daniel ___________ to Beijing two years ago.
Daniel 已经在北京居住两年了。Daniel _______________ in Beijing for two years.
我们用____________(时态)讲授过去发生的事；用____________(时态)讲授动作发生在过去并
且进行到现在。
e.g : 1. 三年前他养了只猫做宠物。 He _____________ a cat as pet three years ago.
2. 这只宠物猫他养了三年了。 He _______________ the pet cat for three years.
（2）Daniel 上个月买了台新电脑。Daniel _______________ a new computer last month.
Daniel已经买了台新电脑。Daniel _________________ a new computer.
(Daniel has a new computer now.)
我们用____________(时态)讲授过去发生的事；用____________(时态)谈论动作的结果，不
强调动作的时间或忽略时间。
e.g : 1.我上个星期去参观了那个新动物园。 I _______________ that new zoo last week.
2. 我已经参观过那个新动物园了。 I ___________________ that new zoo.
（3）吴老师2010年和2011年访问过加拿大。 Mr Wu _____________Canada in 2010 and 2011.
吴老师已经去过加拿大两次。Mr Wu ___________________ to Canada twice.
我们用____________(时态)讲授过去发生的事；用____________(时态)告知动作到现在发生
的次数。
e.g ：1. 我上周看过这部电影。 I _______________ this movie last week.
2. 我已经看过这部电影很多次。 I _________________ this movie many times.
总之，____________(时态)表示过去某个时间发生的事情或存在的状态，说话的侧重点在陈述
___________(时间)发生的事情或状态； ____________(时态)表示到说话时为止已经发生或完成
(不一定结束)的动作或状态，强调造成的结果或对现在产生的影响。
1). Tom 一星期前买了一块手表。他买了一块手表。这块手表他已经买了一星期了。
Tom _____________ a watch a week ago. Tom _____________ a watch.
He _________ the watch __________________.= It __________ a week since he _______ the watch.
2). 两周前方先生到云南了吗？是的，他到那儿两周了。
________ Mr Fan _______ _____ Yunnan two weeks ago? Yes, he ____ _____ _____ _____
two weeks ago. (= It _______ _______ two weeks since he ___________ ___________ . )
注意：一般过去时的时间状语：yesterday, last week, … ago, in 1980, in October, just now，at first、at last，…later等，皆为具体的时间状语。现在完成时的时间状语：for, since, so far, ever, never, just, yet, till/until, up to now, in/over/during the past years, recently等，皆不确定的时间状语。
【堂清巩固】
一、用括号中所给动词的适当形式填空:
1. I__________（buy）the bike two weeks ago. I_________（have）this bike since the beginning of this month. I ___________（have）it for two weeks.
2. Great changes_____________（take）place in those villages in the past ten years.
3. How many times ___you ____ (phone）me these days?
you (phone）me this morning?
4. Tom can’t get into the room because he ______（lose）the key to the door.
5. I ____（look）for the dictionary, but I ____（not find）it yet.
6. － ___ the new programmes _____ （start）yet?－No, they _____（plan）.
7. We ______（live）in Shanghai from 1989 to 1999. We ______（live）for 10 years.
8. They can’t go with us. They （not finish）the work yet.
9. You （not change ）your mind, ______ you?
二、单项选择
( ) 1. He has studied in our school __________.
A. since five years B. for five years C. for five years ago D. in five years
( ) 2. Nice to see you again. I ________ you for a long time.
A. hadn’t seen B. haven’t seen C. didn’t see D. don’t see
( ) 3. “_____ your mother ______ yet?” “Yes, she _____ back a moment ago.”
A. Has; come; came B. Have; come; came C: Has; came; came D. Has; come; has come
( )4.Both? his? parents? look? sad .Maybe they? _________what's? happened? to? him .
A.? knew? Ｂ.? have known?? Ｃ.? must know?? Ｄ.will know
( )5. He? has? _______ been? to? Shanghai , has? he ?
Ａ.? already?? Ｂ.never??? Ｃ.ever??? Ｄ. still
( )6. Have? you? met? Mr? Li ______？
Ａ.? just?? Ｂ.? ago???? Ｃ.before?? Ｄ.? a moment ago
( )7. The famous writer _____ one new book in the past two years.
Ａ. is? writing??? Ｂ.was? writing??? Ｃ.wrote? Ｄ.has? written
( )8. ---Our country? ______ a lot so far . ---Yes . I hope it will be even ______ .
Ａ. has? changed ; well?? Ｂ.? changed ; good Ｃ. has? changed ; better Ｄ.? changed ; better
( )9. We ______ Xiao? Li? since? she? was? a? little? girl .
Ａ. know?? Ｂ.? had? known?? Ｃ. have? known?? Ｄ.? knew
( )10. ---These? farmers? have? been? to? the? United? States .---Really ? When _____? there ?
Ａ. will? they? go????? Ｂ.? did? they? go Ｃ.? do? they? go????? Ｄ.? have? they? gone
课件50张PPT。Unit 3Unit 3
Online toursGrammar1. To understand the differences between the simple past tense and the present perfect tense.
2. To grasp the expressions with the present perfect tense.
3. To grasp the expressions with the simple past tense.
4. To understand different uses of the present perfect tense.Learning targetspassport n. 护照1.做梦，梦想vi.& vt.
dream
2. 想象；梦想
dream about/of
3. 护照 n.
passport
4. 实现你的梦想
realize your dream
5. 进行在线旅游
take an online tour 小组合作朗读：6. 你曾想象过没有护照环游世界吗？
Have you ever dreamt of travelling around the world without a passport?
7.你可以通过在线旅游实现你的梦想。
You can realize your dream by taking an
online tour.
通过干某事_________________
8. 向某人展示某物
show sb. sth. = show sth. to sb.
9. 昨天，丹尼尔向我展示了一个美国的网上旅游。
Yesterday Daniel showed me an online tour of the USA.by doing sth10. 我以前从未见过这么多出色的图片。
I have never seen so many wonderful pictures before.
11. 上周我买了一本美国名胜的书。
Last week，I bought a book about the places of interest in the USA.
12. 我父亲刚刚从美国返回，但我从未去过那儿。
My father has just returned from the USA, but I have never been there. 完成句子。
1. 北京因万里长城而著名。
Beijing _____________ the Great Wall.
2. 这条河是个钓鱼的好地方。
This river is a _______________ fishing.
3. 我三天前听说过这件事。
I _________ this _______________.
4.自从2000年起，他就在上海工作了。
He __________ in Shanghai ______ 2000.is famous forgood place to goheard of three days agohas worked sincedream vi.& vt. 做梦，梦想
dream about/of 想象；梦想
e.g. Do you often dream at night?
你在夜里经常做梦吗？
I sometimes dream about my parents.
我有时梦见我的父母。
I dream of becoming a teacher.
我一心想当个教师。学海拾贝_______ _______ __Daniel 两年前去了北京。
Daniel went to Beijing two years ago.
Daniel 已经在北京居住两年了。
Daniel has lived in Beijing for two years.We use the simple past tense to tell what happened in the past.We use the present perfect tense to talk about an action that started in the past and continues to the present.Presentation____________________________________How long/ since/for
1. 三年前他养了只猫做宠物。
He ______ a cat as pet three years ago.
2. 这只宠物猫他养了三年了。
He _________ the pet cat for three years.kepthas keptexercisesDaniel 上个月买了台新电脑。
Daniel bought a new computer last month.
Daniel已经买了台新电脑。
Daniel has bought a new computer.
(Daniel has a new computer now.)We use the simple past tense to tell what happened in the past.We use the present perfect tense to talk about the result of an action.When the action happened is not very important. It may have just happened or happened some time ago.Presentation______________________________________1. 我上个星期去参观了那个新动物园。
I _______ that new zoo last week.
2. 我已经参观过那个新动物园了。
I ____________ that new zoo.visitedhave visitedexercises吴老师2010年和2011年访问过加拿大。
Mr Wu visited Canada in 2010 and 2011.
吴老师已经去过加拿大两次。
Mr Wu has been to Canada twice.We use the simple past tense to tell what happened in the past.We use the present perfect tense to tell how many times an action has happened till now.Presentation____________________________________次数/ever/never/before1. 我上周看过这部电影。
I _____ this movie last week.
2. 我已经看过这部电影很多次。
I __________ this movie many times.sawhave seenexercises总之，____________(时态)表示过去某个时间发生的事情或存在的状态，说话的侧重点在陈述________(时间)发生的事情或状态;
____________(时态)表示到说话时为止已经发生或完成(不一定结束)的动作或状态，强调造成的结果或对现在产生的影响。 一般过去时过去现在完成时1). Tom 一星期前买了一块手表。他买了一块手表。这块手表他已经买了一星期了。
Tom ____________ a watch a week ago. Tom _____________ a watch.
He _______ the watch ___________.
= It __________ a week since he __________ the watch.
2). 两周前方先生到云南了吗？是的，他到那儿两周了。
____ Mr Fan _____ ___ Yunnan two weeks ago? Yes, he ___ ___ ___ ___
two weeks ago. (= It _____ _____ two weeks since he _________ ___________ . )boughthas boughthas hadsince a week agois/has beenboughtDid arrive inhas been there sinceis/has beenarrived/reached/ got there注意：一般过去时的时间状语：yesterday, last week, … ago, in 1980, in October, just now，at first、at last，…later等，皆为具体的时间状语。
现在完成时的时间状语：for, since, so far, ever, never, just, yet, till/until now, up to now, in/over/during the past years, recently等，皆不确定的时间状语。__________________________________________________,___,_______,____,_____,____,_____,___________________________,_______Simon is showing Millie some pictures. Complete his sentences with the correct forms of the words in brackets.I ______ (visit) the Palace Museum with my grandparents the other day.I ________ (climb) Mount Huang last Summer.visitedclimbed_____ you ever _____ (try) the famous Tianjin Baozi?I am happy that I ___________
(learn) to swim. Have tried have learntMr Wu is asking the students to make sentences with the correct tenses. Help them complete the sentences with the correct forms of the words in brackets.1. I ________________ (finish/ just) my homework.
Millie ________ (finish) her homework 20 minutes ago.
2. I ______ (write) an email to my friend yesterday.
Daniel _________________ (write/ already) two emails.has already writtenhave just finishedwrotefinished3. I ______(be) in Hainan last week.
Some of our classmates _____________ (not be) to Hainan yet.
4. I __________ (live) in Sunshine Town since I was born.
Daniel _____ (live) in Nanjing in 2007.waslivedhave livedhaven not beenMillie has never been to Nanjing. She is asking Simon about the city. Complete their conversation with the correct forms of the words in brackets.Millie: ___________________
(you/be/ever) to Nanjing?
Simon: Yes. I(2)____________(be) there three times.
Millie: When (3)____________ (you/go) there last?
Simon: Last summer. I (4)______(spend) a week there.
Millie: (5)____________ (you/like) it?Have you ever beenhave beendid you gospentDid you likeSimon: Oh yes. I (6)_____ (have) a great time there. I (7)______ (visit) many places of interest and (8)____ (eat) lots of local food.
Millie: Lucky you! I (9)_______________
(be/never) there.hadvisitedatehave never beenMillie is writing about the USA in her diary. Complete her diary entry with the correct forms of the verbs in the box.Saturday, 15 March
Have you ever dreamt of travelling around the world without a passport? Yes, you can realize your dream by taking an online tour. Yesterday Danniel (1)_________ me an online tour of the USA. I (2)_____ never _____ so many wonderful pictrues before.showedhave seenLast week, I (3)_________ a book about the places of interest in the USA. I (4)_________ 20 pages already. It’s really interesting. My dad (5)_____ just _________ from the USA, but I (6) ______ never_______ there. I hope I can visit the USA some day.have beenboughthave readhasreturnedTips:some day 和 the other day 的区别：some day指将来“总有一天、有朝一日、终将、(日后)某一天”，谓语动词用一般将来时。如:
Your wishes will come true some day.
总有一天你的愿望会实现的。
Some day you’ll have to pay for what you have done.
总有一天你要为你的行为而付出代价的。 Tips:some day 和 the other day 的区别：the other day 相当于a few days ago, 意为“几天前、某天、那天、不久前”，句中用一般过去时。如：
I met her in the street the other day.
几天前我在街上碰见过她。
I bought the watch the other day.
这手表我是几天前买的。 1) 一般过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作；现在完成时为过去发生的，强调过去的事情对现在的影响，强调的是影响。Summary2) 一般过去时常与具体的时间状语连用，而现在完成时通常与模糊的时间状语连用，或无时间状语。
一般过去时的时间状语：yesterday, last week, … ago, in 1980, in October, just, now等，皆为具体的时间状语。现在完成时的时间状语：for, since, so far, ever, never, just, yet, till/until now, up to now, in past years, already等，皆不确定的时间状语。
共同的时间状语：this morning, tonight, this April, now, already, recently, lately 等。3) 现在完成时可表示持续到现在的动作或状态，动词一般是延续性的，如：live, teach, learn, work, study, know。
一般过去时常用的非持续性动词有come, go, leave, start, die, finish, become, get married等。句子中如有过去时的时间副词（如yesterday, last week, in 1960）时，不能使用现在完成时，要用过去时。
（错）Tom has written a letter to his parents last night.
（对）Tom wrote a letter to his parents last night.?1. Mother ____ me a new coat yesterday. I _______ it on. It fits me well.
A. had made … have tried
B. made … have tried
C. has made … tried
D. made … tried ExercisesB 2. We _______ trees last Sunday. So far we _______ over 3,000 trees there.
A. planted； planted
B. planted； have planted
C. have planted； planted
D. have planted； have planted B 3. I _______ the way. I ________ here for quite many years.
A. knew … have lived
B. knew … live
C. know … have lived
D. know … live C 一、用括号中所给动词的适当形式填空:
I_____（buy）the bike two weeks ago.
I_________（have）this bike since the beginning of this month. I ________（have）it for two weeks.
2. Great changes_____________（take）place in those villages in the past ten years.
3. How many times ______you_____(phone）me these days?
_ you ____(phone）me this morning?堂清巩固bought have had have had have taken have phoned Did phone 4. Tom can’t get into the room because he _________（lose）the key to the door.
5. I __________（look）for the dictionary,
but I ___________（not find）it yet.
6. －______the new programmes_______ （start）yet?－No, they_________（plan）.
7. We______（live）in Shanghai from 1989 to 1999. We________（live）for 10 years.
8. They can’t go with us. They__________
（not finish）the work yet.
9. You ____________（not change ）your
mind, ______ you?has lost have looked haven’t found Have started have planned lived have lived haven’t finished haven’t changed have( ) 1. He has studied in our school _____.
A. since five years B. for five years
C. for five years ago D. in five years
( ) 2. Nice to see you again. I ________
you for a long time.
A. hadn’t seen B. haven’t seen
C. didn’t see D. don’t see
( ) 3. “_____ your mother ______ yet?”
“Yes, she _____ back a moment ago.”
A. Has; come; came B. Have; come; came
C. Has, came, came D. Has, come, has come
( )4.Both? his? parents? look? sad .Maybe
they? _________what's? happened? to? him.
A.? knew? Ｂ.? have known??
Ｃ.? must know?? Ｄ.will knowB B A B ( )5. He? has? _____ been? to? Shanghai ,
has? he ?
Ａ.? already?? Ｂ.never??? Ｃ.ever??? Ｄ. still
( )6. Have? you? met? Mr? Li ______？
Ａ.?just??Ｂ.?ago? Ｃ.before? Ｄ.?a moment ago
( )7. The famous writer _____ one new
book in the past two years.
Ａ. is? writing??? Ｂ.was? writing???
Ｃ.wrote? Ｄ.has? written B C D ( )8. ---Our country? ______ a lot so far .
---Yes . I hope it will be even _____ .
Ａ. has? changed ; well??
Ｂ.?changed ; good
Ｃ.has? changed ; better
Ｄ.changed ; better
( )9. We ____ Xiao? Li? since? she
? was?a? little? girl .
Ａ. know?? Ｂ.? had? known??
Ｃ. have? known?? Ｄ.? knew
( )10. ---These? farmers? have?been? to?
the? United? States .
---Really ? When _____? there ?
Ａ. will? they? go????? Ｂ.? did? they? go Ｃ.? do? they? go????? Ｄ.? have? they? goneC C B Finish off the exercises in workbook.Homework1.做梦，梦想vi.& vt.
2. 想象；梦想
3. 护照 n.
4. 实现你的梦想
5. 进行在线旅游
6. 你曾想象过没有护照环游世界吗？
7.你可以通过在线旅游实现你的梦想。
8.通过干某事_________________10. 我以前从未见过这么多出色的图片。
11. 上周我买了一本美国名胜的书。
12. 我父亲刚刚从美国返回，但我从未
去过那儿。
1.make___ ___
2.meet____ ___
3.pay_____ ___
4.put_____ ___
5.read____ ___
6.ride_____ ___
7.ring____ ____
8.rise____ ____
9.run___ _____
10say____ ____
11.see ___ ____
12.sell ___ ____ 13.send_____ ____
14.shine_____ ___
15.show____ ____
16.sing ____ _____
17.sit_____ ______
18.sleep___ _____
19.smell ___ ____
20.speak___ ____
21.spend___ ____
22.stand ___ ____
23.steal___ ____
24.swim ___ _____ 25.take_____ ______
26.teach_____ ____
27.tell______ _____
28.think____ ______
29.throw____ _____
30.understand _____ _____
31.wake____ _____
32.wear____ _____
33.win_____ _____
34.write____ _____1.做梦，梦想vi.& vt.
2. 想象；梦想
3. 护照 n.
4. 实现你的梦想
5. 进行在线旅游
6. 你曾想象过没有护照环游世界吗？
7. 你可以通过在线旅游实现你的梦想。
通过干某事
8. 向某人展示某物 （2）
9. 昨天，丹尼尔向我展示了一个美国的网上旅游。
10. 我以前从未见过这么多出色的图片。
11. 上周我买了一本美国名胜的书。
12. 我父亲刚刚从美国返回，但我从未去过那儿。
1.make________ ___________
2.meet_________ ___________
3.pay__________ ___________
4.put___________ ___________
5.read__________ ___________
6.ride__________ ___________
7.ring__________ ___________
8.rise__________ ____________
9.run__________ ___________
10say__________ __________
11.see _________ __________
12.sell _________ ___________
13.send________ ___________
14.shine________ ___________
15.show________ ___________
16.sing ________ ____________
17.sit__________ ___________
18.sleep________ ___________
19.smell _______ ___________
20.speak________ ___________
21.spend________ ___________
22.stand ________ __________
23.steal_________ ___________
24.swim ________ ________
25.take__________ __________
26.teach_________ ___________
27.tell___________ __________
28.think_________ ___________
29.throw________ ___________
30.understand _______ ________
31.wake____________ ________
32.wear____________ ________
33.win_____________ ________
34.write____________ ________
