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现在完成时学案
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现在完成时导学案
石桥子初中 八年级
Our slogan: Where there is a will, there is a way. (有志者,事竟成.)
1、知识目标:
熟记动词的过去分词和现在完成时(一 )的构成形式。
2、能力
1)能用现在完成时描写自己的经历
2)能够正确使用already, just ,yet 能够区分have gone to 和have been to
【复习重点】
一、现在完成时谓语动词的构成:
二、能够对现在完成时进行句式变换
【复习难点】
have been to 与have gone to的区别
【课前延伸】
做一做
复习动词的过去式和过去分词,写出下列单词的过去式和过去分词:
1.want 2.visit 3.enter
4.live 5.love 6.hope
7.study 8.marry 9.carry
10.stop 11.shop
12.have 13.send 14.be
15.go 16.write 17.make
18.hear 19.do 20.read
动词过去分词的构成:
• 一,规则变化,在末尾加 ed,
1, 直接在末尾加 ed,如 visit — visited
2,以 e 结尾的,加 d,如 live — lived
3,以辅音字母加 y 结尾的,把 y 变 i ,加 ed,
如 study—studied carry — carried
4,以重读闭音节结尾,并且末尾只有一个辅音字母的,双写辅音字母,再加 ed 如 stop — stopped drop --dropped
二,不规则变化的。
如 get — got make — made write —written
be — been see — seen hear — heard 等
试一试
复习现在完成时的构成。
现在完成时:
1. 构成:肯定句:助动词 或 +
否定句: 助动词 have / has后加 not, 可缩写haven’t / hasn’t
一般疑问句:助动词 have / has提前
I bave finished (finish) homework already.
Has he seen ( see ) the film before?
We haven’t been to the Great Wall.
2.用法:
(1)表示过去发生或已完成的动作对现在造成的 或 。常连用的时间状语有: , , , , , 等。
(2)你能说出already 和yet 的用法有什么不同吗?
a 如果肯定句中含有already,在变成否定句或疑问句时,要把句中的already转换成 ______.
b. already 多用于现在完成时肯定句的句中或 ______;
yet多用于现在完成时否定句或疑问句_______。
看下面两个题,注意:句中already 和 yet不同用法
1. I have seen the film already. (变为否定句)
I haven’t seen the film yet.
2.I have already finished my homework. (变为一般疑问句)
Have you finished your homework yet?
【课内探究】
【小组合作求共赢】
合作探究一
学习现在完成时的第一种用法,做下列练习题
一、用动词的适当形式填空:
1.Scientists ___________ (discover) many galaxies in the universe already.
2.He __________________ (not finish) his homework yet.
3.We _________ never _________(see) this film before.
4.Tony________just _________(make) a model of the space station.
5.Sally ________________ (not visit) China before.
6._______ the spacecraft __________ (reach) Mars yet?
课堂巩固我能行
巩固本课内容
二,句型转换
1. I’ve already made a model of the spacecraft. (改为否定句)
I_______ ______ a model of the spacecraft________.
2. They’ve been to Mars already. (改为一般疑问句)
_______ they ______to Mars _______?
3. It has taken several months to get to Mars. (改为一般疑问句)
________ ________ _______ it taken to Mars?
4. on ,discovered , yet , life , they , Mars , haven’t .( 连词成句 )
————————————————————.
三,Can you choose “been to” or” gone to” ?
1.Have you ever ___ ___the Great Wall?
2.My mother isn’t at home ,she has ___ ___ the cinema.
3.Astronauts have ____ ____the moon and returned safely.
4.The space shuttle has ____ ____to the space station. It will come back tomorrow.
小结:
have been to与have gone to的区别
1. I have ever been to Shanghai .
我曾经去过上海。
2. — Where is your mother ?
— She has gone to Shanghai.
你妈妈在哪里?
她去了上海。
have been to 曾经去过某地(已返回)
have gone to 去了某地 (没有回来)
【课堂检测】
课堂检测棒前
一、句式变换:(3分)
1. Jack has visited China before.(改为否定句)
Jack _____ _____China before.
2. I have already heard the latest news .(改为一般疑问句)
heard the latest news ______?
3. They have been here for 12 years. (改为一般疑问句)
have they been here?
二、用所给词的正确形式填空: (5分)
1. She _____ never ______ (read) this book .
2.______ Tom ______( finish) his homework yet?
3.I ______ (see) the film before . I don’t want to see it again.
4.He _____ already ________ (travel) around the world .
5.The astronauts ______ (not find ) life on the moon yet.
三、完成句子:(2分)
1. 他爸爸去北京出差了,他下周回来。
His father has ____ ____ Beijing on business. He will come back next week.
2. 我们去过北京。
We have ____ ______ Beijing.
【课后提升】
Homework:
1. 写一段短文,用现在完成时描述一位你熟悉的人的简历
2. 把本课内容归纳。
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