初中英语外研版 (新标准)八年级下册Unit 3 Language in use课前预习课件ppt

这是一份初中英语外研版 (新标准)八年级下册Unit 3 Language in use课前预习课件ppt，共38页。PPT课件主要包含了have，made，Has，arrived，been，started，did，buy，bought，returned等内容，欢迎下载使用。
现在完成时(二)【新知导引·悟】用所给动词的适当形式填空, 并体会现在完成时的用法。1. I _____ just _____ (make)a mdel spaceship fr ur schl prject.
2. We ____________(find)life n any ther planets yet.  3. ____ it _______ (arrive) yet? 4. Astrnauts _____ already _____ (be) t the mn. 5. I haven’t _______ (start) yet because I’m nt sure hw t make it.
haven’t fund
【知识详解·记】　　(一)用法: 现在完成时可以表示动作已经完成或刚刚完成, 经常用just, already, yet等加以强调说明。
　　(二)一般过去时与现在完成时的区别(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, 强调的是动作。*Daming returned the bike t Tny last Friday. 上星期五大明归还了托尼的自行车。
(2)现在完成时态的动作发生在过去, 强调过去发生的动作对现在造成的影响和结果, 而且造成的影响和结果还存在着。例如: I am very prud because China has sent eleven spaceships int space successfully. 我很自豪, 因为中国已经成功发送了十一艘宇宙飞船进入太空。
【语法强化·练】Ⅰ. 用所给词的适当形式填空1. —Where ___ yu ____ (buy)it? —I _______ (buy)it in a supermarket. 2. We _____ already ________ (return) the bk. 3. _____ they _____ (build) a new schl in the village?
4. He _____________(nt finish) his wrk yet.  5. Mr White ___ just _______ (arrive) hme.
hasn’t finished
Ⅱ. 用already, yet, ever或never填空1. The by is free nw. He has finished the wrk _______. 2. Have yu visited the space museum ___? 3. My sister has _____ made a cake befre, s it’s her first time.
4. —Have yu cleaned yur rm? —Nt ___. 5. —Have yu ____ read the bk abut the bridge? —Yes, it’s fantastic. I have _______ read it twice. 6. We have eaten up all the fruit _______ , s we’d better g t the supermarket t buy sme. 7. Mr Smith hasn’t accepted the invitatin ___ (还, 仍然).
Ⅲ. 单项选择(　 　)1. (2018·白银中考) —Is dinner ready? —Nt _________.  A. already　　B. justC. yetD. ever
(　 　)2. Ww! Yu _________dinner! Let’s eat nw.  A. ckB. are ckingC. will ckD. have cked
(　 　)3. —The twn f Huarng _________a lt in the past five years.  —That’s true. It’s becming mre and mre beautiful. A. changedB. has changedC. had changedD. is changing
(　 　)4. —_________ yu _________where t spend yur hliday?  —Nt yet. We may g t Beijing. A. D; decideB. Did; decideC. will; decideD. Have; decided
(　 　)5. —Peggy, wuld yu like t see the flwer shw with me tmrrw? —Srry. I _________it already.  A. will seeB. sawC. have seenD. see
【记·写作佳句】　【教材句】1. I’ve just made a mdel spaceship fr ur schl prject. 我刚刚做完了我们学校项目要求的宇宙飞船模型。
2. Lts f scientists are wrking hard in rder t send astrnauts t Mars ne day. 许多科学家正在努力研究, 为了有朝一日能将宇航员送往火星。3. Scientists think that there has been life n the earth fr hundreds f millins f years. 科学家认为地球上的生命已有亿万年的历史了。
4. The earth is a planet and it ges arund the sun. 地球是一颗行星, 它围绕太阳运行。5. The sun and its planets are called the slar system. 太阳和它的行星被叫做太阳系。 6. Nne f them has an envirnment like that f the earth. 没有一颗行星拥有与地球一样的环境。
　【拓展句】1. My dream is t be an astrnaut. 我的梦想是成为一名宇航员。2. Shenzhu IX was sent up int space successfully. “神舟九号”成功升空。3. Yu have finished a lt f experiments. 你们已经做了很多实验。
【鉴·典题考题】　　2019年10月, 上海博物馆将邀请刘洋教授来给青少年讲解太空知识以及宇航员训练等知识。刘洋是中国载人航天史上第一位女性宇航员。2012年6月, 她和另外两名宇航员景海鹏和刘旺乘坐“神舟九号”载人航天飞船完成载人空间对接任务。假如你是大明, 你对太空有着浓厚的兴趣, 梦想成为一名宇航员, 请给
刘洋教授写一封信, 询问你所关注的知识, 并表达自己的愿望和决心。要求: 语言通顺, 行文连贯, 内容充实, 80词左右。
Dear prfessr Liu, 　　I’m excited t knw yu are ging t give us a speech. _________________________________________________________________________________________________________________________________
　　I’m lking frward t meeting yu sn. Yurs, Daming
【遣词造句】1. 开篇点题引出写作目的知道你要给我们做演讲, 我感到很兴奋。_______________________________________________ 
I’m excited t knw yu are ging t give us a
2. 具体描述个人感兴趣的知识和疑问等(1)宇航员 _________　　(2)宇宙 ________(3)梦想 ______(4)太空旅行 ___________ (5)对……感兴趣 ______________ (6)完成很多实验 _______________________ (7)因……感到骄傲 __________ (8)为了; 以便于 __________ 
space travel
be interested in
finish a lt f experiments
(9)我有一个成为像你一样的宇航员的梦想。________________________________________ (10)你能告诉我宇航员在太空中是如何生活的吗? 他们在空闲时间做什么? ________________________________________________________________________
I have a dream f being an astrnaut like yu.
Culd yu tell me hw astrnauts live in space and
what they d in their free time?  
3. 最后表达愿望和决心我期待很快与你相见。____________________________________ 
I’m lking frward t meeting yu sn.
【连句成篇】 Dear Prfessr Liu, 　　I’m excited t knw yu are ging t give us a speech. We are prud f yu. I am a student in Grade Eight. I am interested in space travel. I have a dream f being an astrnaut like yu. Culd yu tell me hw astrnauts live in space and what they d in their free
time. Yu have finished a lt f experiments, but which ne d yu like best? In rder t make my dream cme true, what kind f bks shuld I read and what sprts shuld I play? 　　I’m lking frward t meeting yu sn. Yurs, Daming
【练·话题写作】　　假如你是Sam, 生活在火星上, 你的妹妹Amy在地球上。请根据表格提示, 给Amy写封电子邮件, 向她介绍一下你在火星上的生活。
Dear Amy, 　　I’m writing t yu n Mars. ___________________________________________________________________________________________________________　　I hpe yu can cme t live with me sn. Yurs, Sam
【参考范文】Dear Amy, 　　I’m writing t yu n Mars. It’s really wnderful t live n Mars. 　
　　I think the life n Mars is mre cmfrtable and interesting than that f n earth. We study nline at hme. We can cmmunicate with teachers and classmates n the Internet. We have rbts t d husewrk, s we have mre free time t read bks r exercise. Mars is very beautiful. There are green trees and flwers everywhere. The traffic is very cnvenient, but there is n pllutin.