八年级英语下册 Unit 6 How long have you been collecting shells？（第6课时）学案 人教新目标版

1、unit 6 how long have you been collecting shells？(第六节课)第一，现在完成的时候。1.定义：现在完成时表示从过去到现在的动作，必须继续进行。2.当前正在进行的配置已完成：肯定短语：主语/has been doing.否定句：主语have/has not been doing.一般疑问句：Have/Has主语been doing？3.当前完成时使用：现在完成的句子中使用了很多连续性动词，如live、Learn、Study、Work等。经常与表示一定期限的副词一起使用，例如For two hours、since 1998、all this morni

2、ng、these few days等。强调“总是谈论做某事”例如： I have been cleaning the room all this morning .我今天一上午都在打扫房间。I ve been studying English since I was 4 years old .我从4岁开始学英语。4.当前完成时间与当前完成时间之间的差异：(1)现在完成的时候强调动作的完成，现在完成的时候注重动作的持续。示例：I have read a book about birds。(已阅读)I have been reading a book about birds。(继续读，现在还在读，

3、好像还能继续读。）(2)两种时态都有连续性，但现在完成的时候往往说明一个茄子事实，一个影响或结果，无感情色彩。现在完成表示一个动作的持续和重复，有时有一定的情感色彩。示例：She has been singing all the day。她唱了一整天的歌。(抱怨，无聊)have you been talking with him on the phone _ _ _ _ _ _ _ _ _ _ _？你从6点开始一直在给他打电话吗？2.for表示时间的持续时间，后跟_ _ _ _ _ _ _ _ _ _ _ _牙齿。在一定时间内多和有数字的名词一起使用，表示需要连续性动词。I haven t b

4、een seeing a film for a long time。我很久没看电影了。摘要：1)时态助动词完成了。Have/has _ _通常为for _ _ _ _ _2)现在完成是have/has _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _现在强调完成时动作的结果，即动作已经结束。课堂练习用since或for填充空格。1.the Wang family have been living in the neighbor hood _ _ _ _ _ _ _ _ October last year .2.Sar

5、ah has been sleeping _ _ _ _ _ _ _ _ _ _ _ _ _ 9336000。3.Mike has been studying English _ _ _ _ _ _ he was six years old .4.I ve been watching you _ _ _ _ _ _ two minutes .5.I ve been practicing the piano _ _ _ _ _ 10336030 .6.he s been living here _ _ _ _ _ 10 years。扩大练习1.1 .how long have you been

6、_ _ _ _ _ _ _ _ _ _ _ _ _ _ _(write)in English。我在北京住了12年。I have been living in Beijing _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _。3.他已经在这里两个小时了。he _ _ _ _ _ _ _ _ _ _ _ stayinghere _ _ _ _ _ two hours . eleven years old。4.hehas been studying English _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _5.

7、the runner hasbeen _ _ _ _ _ _ _ _(run)for 2 hours。6.the boy has been living here since his family _ _ _ _ _(move)here。7.I have been collecting stamps _ _ _ I was 10。8.买了多少牙齿书？_ _ _ _ _ _ _ _ _ _ _ _ have you _ _ _ _ _ _ _ _ _ thisbook？二、单一选择：()1。theman _ _ _ _ _ for two hours，but he isnt tired at all。A.ran b . is running c . will run d . has been running()2 ._ _ _ _ _ _ _ _ you _ _ _ _ in this school since you came to Dali？A.did、study b.do、study C. will、study D. have、been studying()3 .the boy _ _ _ _ _ _ _ his home work after he got back from school。a . did b . wasdoing c . has been doi