英语人教版四年级下册now and then .ppt

1、Unit4 Then and now,Words:,telephone,office,in the office,mobile phone,radio,listen to the radio,news,paper,read newspapers for news 看报纸获得新闻,e-book,watch TV,仍然,still,拼读,spell,使用,use,到处,anywhere,call people anywhere,use the telephone to call people,很久以前 long long ago,过去和现在,then and now,make friends,造句

2、子,make a sentence,写信给,write letters to,write e-mails,全世界,all over the world,do some shopping,buy things from shops,向外看,look out of,继续,go on doing sth.,wait for,在网上,on the Internet,get angry,一般时态复习:,The Simple Present Tense 一般现在时,The Simple Past Tense 一般过去时,一般现在时,1）表示事物或人物的特征或状态。 eg. He is a student.

3、,2）表示经常性或习惯性的动作。 eg. He usually gets up at 6:30 in the morning.,标志词:,often, usually, on Sunday/ weekends.,一般过去时,1）表示过去某个时间发生的动作或存在的状态。 eg. I got up at 6:30 yesterday. （动作） I was at home last night. （状态）,2）表示过去经常性或习惯性发生的动作。 eg. He usually got up at 6:30 last year.,标志词： yesterday及相关短语 昨天上午/下午/晚上 yeste

4、rday morning/afternoon/evening “last + 时间状语”构成的短语 昨晚/上个月/去年春天/去年 last night/month/spring/year “一段时间+ago”组成的短语 三天/四年以前 “介词+ 过去时间名词”组成的短语 在1999年 在2010年12月25号上午 on the morning of December 25th, 2010,three days ago/ four years ago,in 1999,一般时态的句型转换: 肯定句 否定句 一般疑问句 及回答,动词be一般现在时 一般过去时,He is a doctor.,He w

5、as a doctor.,Is he a doctor?,Was he a doctor?,Yes, he is. /No, he isnt.,Yes, he was. /No, he wasnt.,He isnt a doctor.,He wasnt a doctor.,(am, is, are),(was, were）,He can play soccer.,情态动词一般现在时 一般过去时,He could play soccer.,He cant play soccer.,He couldnt play soccer.,Can he play soccer?,Could he play

6、soccer?,Yes, he can. /No, he cant.,Yes, he could. /No, he couldt.,(can),(could）,行为动词一般现在时 一般过去时,He works here.,He worked here.,Does he work here?,Did he work here?,Yes, he does./ No, he doesnt.,Yes, he did./ No, he didnt.,He doesnt work here.,He didnt work here.,(原形/三单),(过去式),一般现在时中，实义动词的用法： 主语是第一、二

7、人称或第三人称复数时，谓语动词用原形； 否定句：在谓语动词前 dont； 一般疑问句：从原形中提出do至句首； 主语是第三人称单数时，谓语动词用第三人称单数形式 (+s/es)； 否定句：在三单前加doesnt，三单变原形； 一般疑问句：从三单中提出does至句首，三单变原形。,动词三单的变化： 1、一般动词后加s， 如： plays, works, makes 2、以 s, x, ch, sh, (o )结尾，后加es. 如：watches, goes 3、辅音字母+y结尾的单词,去y,加ies, 如：worries, studies,一般过去时中，实义动词的用法： 主语不论人称，谓语动词一

8、律用过去式； 否定句：在过去式前 加didnt, 过去式变原形； 一般疑问句：从过去式中提出did至句首, 过去式变原形；,规则动词的过去式变化规则,一般在词尾加- ed,playplayed,以e结尾的，只加-d,以辅音字母+y 结尾的，变y为i ,再加- ed,以一个辅音字母结尾的重读闭音节，先双写这个辅音字母，再加-ed,1.现在的状态 2.经常的或习惯性的动作,1.过去某个时间存在的状态 2.过去经常或反复发生的动作 3.过去某个时间发生的动作,I get up at 6:00 every day. He goes to school on foot. His brother is i

9、ll now.,I got up at 6:30 yesterday. He went to school by bike last year. His brother was ill yesterday.,含有动词的句型,一般过去时表示过去时间内某人某物存在的状态，性质等eg: I was a teacher last year . She was a singer last year . They were happy last year .,一般现在时表示某人某物现在的状态，性质等eg: I am a teacher now. She is a singer. They are happ

10、y.,（用 last year 改写）,含实义动词的句型(主语是第一，二人称及第三人称复数）,一般现在时用来表示习惯性， 经常性发生的动作eg: I go to work by bus every day. You watch TV every night. We play basketball on weekends. They have lessons every morning. 主语动词原形其他,一般过去时用来表示在过去时间 里发生的动作eg: I went to work by bus yesterday. You watched TV last night. We played b

11、asketball last weekend. They had lessons two days ago. 主语动词过去式其他,主语是第三人称单数（肯定句）,He goes to work by bus every day. She watches TV every night. Li Ming plays basketball on weekends. It snows every winter. 主语动词三单其他,He went to work by bus yesterday. She watched TV last night. Li Ming played basketball t

12、hree days ago. It snowed last winter. 主语动词过去式其他,主语是第一，二人称及第三人称复数（否定句）,I do not go to work by bus every day. You do not watch TV every night. We do not play basketball on weekends. They do not have lessons every morning. 主语do not + 动词原形 +其他,I did not go to work by bus yesterday. You did not watch TV

13、last night. We did not play basketball last weekend. They did not have lessons two days ago. 主语did + not+动词原形 其他,主语是第三人称单数（否定句）,He does not go to work by bus every day. She does not watch TV every night. Li Ming does not play basketball on weekends. It does not snow every winter. 主语does not+动词原形 +其他

14、,He did not go to work by bus yesterday. She did not watch TV last night. Li Ming did not play basketball 3 days ago. It did not snow last winter. 主语did not + 动词原形 +其他,I speak English. 2.We like maths. 3.They went swimming last Sunday. 4.He got up very early this morning. 5.The panda eats bamboo.,将下

15、列句子改成否定句、一般疑问句并回答：,I dont speak English.,Do you speak English? Yes, I do/ No ,I dont.,We dont like maths.,Do you like maths? Yes, we do/ No , we dont.,They didnt go swimming last Sunday.,Did they go swimming last Sunday? Yes ,they did.,He didnt get up very early this morning.,Did he get up very earl

16、y this morning? No, he didnt.,The panda doesnt eat bamboo.,Does the panda eat bamboo? Yes, it does/ No, it doesnt.,时态,现在进行时：,一般现在时：,一般过去时：,现在正在进行的动作,经常或习惯性的动作或存在的状态。,过去某个时间或时间段发生的动作或存在的状态。,(The Present Continuous Tense),(The Simple Present Tense),(The Simple Past Tense),各时态常用的信息词,现在进行时：,一般现在时:,一般过去时

17、:,now , Look! Listen! at this time Where is ? Dont talk! Its 8:00am.,always , usually, often, sometimes ,seldom, never, every day, every ,three times a day,last night, last, two days ago, ago, in 1999, in +过去的年份, just now =a moment ago, yesterday, yesterday morning,改一般疑问句的方法：,首先看有无be动词，如果有，将be动词提至句首

18、。 如果没有be动词，看原句的动词形式来决定提出 助动词do/does/did,并且行为动词要变为原形。,V-原形 V-s/es V-ed(过去式),+动词原形?,改否定句的方法：,首先看有无be动词，如果有，在be 动词后面加not. 如果没有be 动词，看原句的动词形式来决定前面加 助动词do/does/did,并在助动词后加not,并且行为动词要还原。,主语+dont/doesnt/didnt+动词原形,现在分词 的构成：,动词第三人称 单数的构成：,过去式 的构成：,直接加-ing. 以不发音的e 结尾，去e加-ing . 重读辅元辅，双写尾字母加-ing.,直接加-s. 以s, x,

19、 ch, sh, o结尾加-es. 以“辅音+y “结尾变y 为i再加-es.,直接加-ed. 以e结尾只加d. 重读辅元辅，双写尾字母再加-ed. 以“辅音+y”结尾变y 为i 再加-ed.,表格对比学习,be+v-ing (现在分词）,在be 后加上not,Be提到句首,V -原形 V-三单,在行为v.前借用do ,does后加not，行为动词还原,Do,Does 提到句首，行为动词还原,V-ed (过去式）,在行为v.前借用did后加not，行为动词还原,Did 提到句首，行为动词还原,判断下列信息词是属于哪种时态,last night now every day Look! yeste

20、rday often Listen! two years ago always in 1897 three times a week,一般现在时 一般过去时 现在进行时,判断下列信息词是属于哪种时态,last night now every day Look! yesterday often Listen! two years ago always in 1897 three times a week,一般现在时 一般过去时 现在进行时,用所给动词的适当形式填空。,1. Listen! Mary _ ( sing) now. 2. A young man _ (run) on the play

21、ground now. 3. My mother _(watch) TV play every day. 4. Old Bush _(visit) China again last month. 5. I _ (play) sports every afternoon. 6. Look! Lucy and Lily _(read) books. 7. There _(is) a football match yesterday afternoon. 8. Our class _( go) to the zoo three days ago.,is singing,is running,watc

22、hes,visited,play,are reading,was,went,Exercise,1.It (rain) hard now. It (rain) quite often in March. 2.Where is she? She (show) the visitors around the city. 3. What Li Lei (do) last night? 4. My parents (work) five days a week. 5. There (be) three bottles of orange on the table just now.,is raining,rains,is showing,did,do,works,were,then,now,could _,can do many things,couldnt _,couldnt = could not,read and draw,write,six years ago,then,now,w