Unit--Computers-语法学习教案课件.pptx
会计学,1,Unit Computers 语法,会计学1Unit Computers 语法,现在完成时,1.现在完成时的结构： He has finished his homework already.否定He has not finished his homework yet.一般疑问Has he finished his homework already?肯定回答Yes,he has. 否定回答No,he hasnt.特殊疑问句What has he done already?,have / has + 动词的过去分词（v-ed）,_,_,_,(,),否定疑问都是在has 或 have 上变化。,第1页/共18页,现在完成时1.现在完成时的结构：have / has + 动,I have been a student since two years ago.否定句一般疑问句肯定回答：Yes, I have. 否定回答：No, I havent.be-(am is are)-(was were)-been,I havent been a student since two years ago.,Have you been a student since two years ago?,原形,一般现在式,一般过去式,过去分词,第2页/共18页,I have been a student since tw,练习,用have或has的正确形式填空,1.I _ lived in Beijing for ten years.2.He _ studied here since two years ago.3.They _ finished their work already.4.In the past five years, Tom _ worked as a worker.5._ you ever been to Beijing.6.She _ not finished her homework yet.,have,has,have,has,Have,has,主语是第三人称单数用has，其他人称用have。,第3页/共18页,练习,用have或has的正确形式填空1.I _,1.I _(live) in Beijing for ten years.2.He _(study) here since two years ago.3.They _(finish) their work already.4.In the past five years, Tom _(work) as a worker.5._ you ever _(be) to Beijing.6.She _ her homework yet.,have lived,has studied,have finished,has worked,Have been,hasnt finished,第4页/共18页,1.I _(live) i,被动语态,1.被动语态的结构主动语态：I finish my homework.被动语态My homework is finished by me.,be + 动词的过去分词（v-ed）,_,be,动词的过去分词,not,dont,第5页/共18页,被动语态1.被动语态的结构be + 动词的过去分词（v-ed,练习：用be的正确形式填空,1. the apple _ eaten by Tom.2.Many apples _ eaten by Tom.3.The apple _ eaten by Tom yesterday.4.Many apples _ eaten by Tom yesterday.5.The apple will _ eaten by Tom tomorrow.6.Many apples will _ eaten by Tom tomorrow7.The apple has _ eaten by Tom already.8.Many apples have _ eaten by Tom already.,eat-ate-eaten,is,are,was,were,be,be,been,been,第6页/共18页,练习：用be的正确形式填空1. the apple _,现在完成时的被动语态,现在完成时：have / has +动词的过去分词（v-ed）被动语态：be + 动词的过去分词（v-ed）,现在完成时的被动语态,have/has + been + 动词的过去分词,第7页/共18页,现在完成时的被动语态现在完成时：have / has +动词,研究下面的句子，把用到被动语态的地方画出来,1.Over time I have been changed quite a lot.2.First as a PC and then as a laptop,I have been used in offices and homes since the 1970s.3.Since the 1970s many new applications have been found for me.4.I have also been put into robots and used to make mobile phones as well as help with medical operations.5.I have even been put into space rockets and sent to explore the Moon and Mars.,第8页/共18页,研究下面的句子，把用到被动语态的地方画出来1.Over ti,研究下面的句子，把用到被动语态的地方画出来,1.Over time I have been changed quite a lot.2.First as a PC and then as a laptop,I have been used in offices and homes since the 1970s.3.Since the 1970s many new applications have been found for me.4.I have also been put into robots and used to make mobile phones as well as help with medical operations.5.I have even been put into space rockets and sent to explore the Moon and Mars.,现在完成时的被动语态,第9页/共18页,研究下面的句子，把用到被动语态的地方画出来1.Over ti,被动语态练习：,主：Snow has covered the ground for weeks.被：The ground _ _ _by snow.主：You have finished this work since two days ago.被：This work _ _ _ since two days ago.主：They have sold ten houses in the past one hour被：Ten houses _ _ _ in the past one hour.,has been covered,has been finished,have been sold,第10页/共18页,被动语态练习：主：Snow has covered the,现在完成时被动语态的练习,1.-The window is dirty. - I know. It _ for ten days. A.hasnt cleaned B.didnt clean C.wasnt cleaned D.hasnt been cleaned,D,D,2.Though we dont know what was discussed, yet we can feel the topic _. (讨论)A. had changed B. will changeC. was changed D. has been changed,第11页/共18页,现在完成时被动语态的练习DD2.Though we don,现在完成时的被动语态,主语+have / has + 动词的过去分词（v-ed）,主语已经被.,1.课本P100页，背诵从arise到bring的变化形式。2.名校学案，P32（第1,4,5,7,9）,第12页/共18页,现在完成时的被动语态主语+have / has + 动词的过,示意某人,用这种方法,鼓励某人做.,与.对抗,决定做.,在.帮助下,在某种程度上,what . do with = How. deal with,第13页/共18页,示意某人用这种方法鼓励某人做.与.对抗决定做.在,look at:看. watch for:留意. watch over:看管 look for:寻找.,in a way:在某种程度上 on the way:在路上 by the way:顺便说一下 in the way:挡路，妨碍,第14页/共18页,look at:看. watc,signal : 信号 chance : 机会 mark : 标记 measure :措施,let / make sb do sth. 让某人做. signal sb to do sth. 示意某人做. call sb to do sth. 叫某人做某事,第15页/共18页,signal : 信号 chance : 机会,anyhow : 无论如何 however: 尽管如此 Thus:然而 therefore:因此,really: 真地 such . that如此.以至于. too:太 so.that.如此.以至于.,名词,形容词或副词,第16页/共18页,anyhow : 无论如何 however: 尽管,as a result of = because of 因为on top of 在.顶部 in front of 在.前面 in need of 需要.,第17页/共18页,as a result of = because of 因为,
