仁爱版七年级下英语各单元语法ppt课件.ppt
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1、各单元语法课件,Unit5 Topic1语法专项课件(频度副词),频度副词的定义,频度副词表示动作发生或状态存在的频率。,常用的频度副词及频度副词短语有:always, usually, often, sometimes, never, once a week, every day等。对频度副词或频度副词短语提问时,用how often,表示“多久一次”。,频度副词的分类,模糊频度副词always, usually, often, sometimes, hardly ever, never,精确频度副词every day, once a week, twice a month, three t
2、imes a year,频度副词对比图,always的频度是100%,意为“总是;永远地”。,usually的频度是70%左右,意为“通常;平常”。,often的频度是50%左右,意为“常常”。,sometimes的频度是20%左右,意为“有时”。,hardly的频度是5%左右,意为“几乎不;简直不”。,never的频度是0,意为“从来不;永不”。,频度副词经典例句,1) always表示的频率为100%,意思是总是、 一直、始终。 I always do my cleaning on Sundays. 我总是在星期天打扫卫生。,频度副词经典例句,2)usually与always相比,表示的频
3、率要低些,约为70%-80%。意思是通常。Plants are usually green. 植物通常是绿色的。Usually she goes to work by bus. 她通常乘公共汽车去上班。,频度副词经典例句,3)often的频率比usually又略低些,约为60%-70%,意思是经常、常常。Do you often write to them? 你常给他们写信吗? Does Fred come here often? 弗雷德常来这儿吗?,频度副词经典例句,4)sometimes的频率比often又低些,约为50%sometimes30%,意思是“有时、不时”。Jenny usua
4、lly eats a sandwich for lunch. Sometimes she eats soup.珍妮经常午饭吃一个三明治。但她有时候喝汤。,频度副词经典例句,6)never与always完全相反,是100%否定,意思是“从不,决不,绝不,总是不“。I can never stop. 我绝不会停止。Li Ming never wears dresses. 李明从不穿裙子。,频度副词的位置,通常频率副词放在实义动词之前, be动词,情态动词或助动词之后。但是sometimes最活跃。它既可以在句中也可以在句首,还能在句末。,频度副词的位置,She is always ready to
5、 help others.,(be动词后),My parents have never been to Beijing.,(助动词后),We often go there.,(实义动词前),Sometimes she writes to me.,(句首或句尾),频度副词的用法,1. often, always, usually等通常和一般现在时连用,表示现在经常或反复发生的动作。例:It often rains here in April. 这儿四月份常下雨。,频度副词的用法,2.always与进行时连用时,并不强调动作正在进行,而是表示赞叹、厌烦等情绪。例:He is always thin
6、king of others. 他总是想着别人。As a boy, he was always making trouble.他小时候总是惹是生非。,(表赞扬),(表厌烦),频度副词的用法,3. 对频度副词提问时,用how often。例: I write to my brother sometimes.How often do you write to your brother?,易错点1,how often与how long/far/soon的用法区别,(多用于一般现在时),(多用于完成时),(多用于一般将来时),易错点2,sometimes与some times/some time/so
7、metime,易错点3,hardly与hard辨析,例: Lucy hardly ate anything. 露西几乎什么都没吃。 The ice is hard enough to skate on. 这冰很硬,可以在上面滑。,【典例1】 Zhang lili, “The most beautiful teacher”, is good to her students. Yes, and she is _ popular with her students. A. sometimes B. never C. always D. hardly,考查频度副词。always总是,sometimes
8、有时,never从不,hardly几乎不。be popular with 深受的欢迎。根据题意,答案选C。,【典例2】 Did you go to the cinema to see 3D Titanic last night? No, I _ go to the cinema. The tickets are too expensive. A. hardly B. sometimes C. only D. usually,考查频度副词。hardly几乎不,sometimes有时,only仅仅,usually经常。由too expensive(太贵)可知,“几乎不看电影”,所以答案选A。,【典
9、例3】 _ is it from home to the shopping mall? About fifteen minutes ride. A. How long B. How far C. How often D. How much,考查频度副词。How long多久,How far多远,How often多久一次,How much多少钱。根据About fifteen minutes ride可知,问的是距离,故答案选B。,Unit5 Topic2语法专项课件(现在进行时),现在进行时定义,现在进行时是表示现在、说话瞬间或当前正在做着的动作。,考点透视,知识定位,时态形式,动名词,肯定
10、否定疑问,使用条件,标志词,变化规则,能力要求,现在进行时的结构,否定形式,问句形式,主语 + be not doing sth.,be + 主语 + doing,Lily is doing her homework now.,Lily is not doing her homework now.,Is Lily doing her homework now?,现在进行时三大用法,1) 表示现在( 指说话人说话时) 正在发生的事情。, Whats your brother doing now? 你弟弟在做什么? He is flying a kite. 他在放风筝。,2)习惯进行:表示长期的或
11、重复性的动作,说话时动作未必正在进行。,The number is getting bigger and bigger.数字在逐渐变大。,现在进行时三大用法,现在进行时三大用法,3)表示反复发生的动作或持续存在的状态,往往带有说话人的主观色彩。,He is always thinking of others. 他总是想着别人。,(表赞扬),动名词变化规则,如何判断现在进行时,(1)一般句中用到表示“在现在”的时间状语,如:now, right now, at the moment 或Its+几点钟”句型,常判断用现在进行时。Eg:Its six oclock. The children are
12、 playing basketball.现在六点钟了,孩子们正在打篮球。,如何判断现在进行时,(2)句中用到“Listen!” “Look!” “Keep quiet” “Dont make noise!”等提示语时,表明说话间另一个动作正在进行,这时,句子也要用现在进行时。Eg:Keep quiet ! The teachers are talking in the office.安静!老师正在办公室里谈话。,如何判断现在进行时,(3)现在进行时常用来表示在当前一直做着的动词,这时句中常用these days ,all the time等时间状语。Eg: These days, uncle
13、Wang is building a small room for his dog. 这些天,李叔叔正在为他的狗建一个小房子。,如何判断现在进行时,(4) 通过上下文句义,表明某一动作是现在或说话瞬间发生的动作,这个句子也要用现在进行时态。Eg: Where is Tom? 汤姆在哪儿? He is running on the playground . 他正在操上想跑步。,如何判断现在进行时,(5)表示状态和感觉的词,一般不能用于进行时态,因为他们不能表示正在进行的动作。Eg:Look! The boat looks like a duck.看!这只船像只鸭子。,考查现在进行时的结构。根据“
14、直、去、双、变”原则:talk-talking; play-playing。进行时的结构是be + v-ing。,【典例1】用词语的正确行使填空 (1) Listen, Mr. Wu on the phone (talk). (2) I soccer now. Im walking. (not play),is talking,am not playing,(3) Is your father at home? Yes ,he is .He a TV show (watch) (4)They to go to the shop now. (want ) (5) you for your fri
15、ends? (wait) No, Im not.,is watching,want,Are,waiting,考查现在进行时的结构。根据“直、去、双、变”原则:watch-watching, wait-waiting。进行时的结构是be + v-ing。 (4)中表示某人的意愿,不用现在进行时。,【典例2】Look! Tom _ TV happily on the sofa. A. watch B. watches C. watching D. is watching,考查现在进行时。look是现在进行时的标志词,现在进行时的结构为be + v-ing,所以只有答案D符合。,Unit6 Topi
16、c1 语法专项课件(there be句型1),初中英语仁爱版七年级下册,there be句型定义,there be 构成的句子称为“存在句”。此句型构成形式一般为 “there be + 某人/物 + 地点/时间”,意为:在某地有某物(或某人)。,There is a cat under the tree.树底下有一只猫。,There are two students in the classroom. 教室里有两个学生。,there be句型定义,there be句型结构,肯定句:there be + 其他,否定句:there be + not + 其他,疑问句:be + there + 其
17、他,There is a bag on the desk.,There isnt a bag on the desk.,Is there a bag on the desk?,there be句型结构,“Whats + 表示地点的介词短语”用there be句型来回答。,Whats on the desk?There are 5 eggs on the desk.,注意:询问的时候,be动词只能用单数is, 而回答时需视情况而选用单复数。,易错点1,a. There is +单数可数名词不可数名词,There is a book on the desk . 桌子上有一本书。,There is
18、some water in the bottle.瓶子里有些水。,易错点1,b. There are +复数名词,There are some pictures on the wall.墙上有些图画。,There are two apples in the basket.篮子里有两个苹果。,易错点2,there be句型的就近原则,There be 就近原则:若句子中有几个并列主语时,be动词的形式要与离其最近的一个主语在人称和数上保持一致。,1.There is a girl and two boys under the tree.,2.There are two boys and a gi
19、rl under the tree.,【典例1】What_ on the shelf? There are some books. A. be B. am C. are D. is,考查be动词。句意:架子上有什么?有几本书。 What be + 表示地点的介词短语提问,be动词只能用is。,【典例2】Is there a garden in the yard? Yes, there is. And there _ beautiful flowers in it. A. is so much B. are so many C. is so many D. are so much,考查there
20、 be句型。句意:院子里有一个花园吗?有,并且里边有很多漂亮的花。flowers为可数名词单数,选用are和many来限定,故答案选B。,Unit6 Topic1 语法专项课件(方位介词),初中英语仁爱版七年级下册,方位介词用法,表示“在某地”时,at后接较小的地点,in后接较大的地点。如:at the station 在车站; in Beijing 在北京,1. in,at,on,方位介词用法,2. on; above 与 below;over 与under,on, over,above都表示“在的上面” on 表示“在某事物表面上” over表示“正上方”, above只表示“斜上方”,方
21、位介词用法,2. on; above 与 below;over 与under, above的意思是“在之上”,斜上方,反义词是below。如:The plane flew above the clouds.飞机在云层上面飞行。The Dead Sea is below sea level.死海的海面低于海平面。over的意思是“在的正上方”,表示垂直之上,其反义词是under。如:There is a bridge over the river.河上有座桥。There is a ball under the desk.桌子下面有一个球。,方位介词用法,behind,at the back of
22、,in front of,3. 表示“在前/后”的介词图示例,in the front of,方位介词用法,in front of 表示“在之前(范围外)”。如:There are some trees in front of the classroom. 教室前面有一些树。in the front of表示“在的前部(范围内)”。如:Our teacher usually stands in the front of the classroom. 我们的老师通常站在教室前面。,方位介词用法,behind意为“ 在后面”,是in front of的反义词。 at the back of意为“在
23、的后部”,与in the front of互为反 义词组。如:The boy was hiding behind a tree.那个男孩躲在一棵树后。 There is a blackboard at the back of our classroom. 我们教室后面有一块黑板。,方位介词用法,例:between the two villages 两个村庄之间 The match is between a Japanese team and a Chinese team. 比赛在中国队和日本队之间进行。 The village lies among the hills.村庄位于群山之中。 Lu
24、cy is dancing among her classmates. 露西在她的同学之间跳舞。,5. 表示“在之间”: between, among,方位介词用法,6.其它方位介词,方位介词用法,in在里面on在上,by和beside在近旁;above表示在上方,below恰好为反向。若表正上用over,under表示正下方。in front of表在前,反义behind在后面。从里穿过用through,表面通过across。进到里面用into,落到上面用onto。from表示自何方,to和towards表朝向。小小介词用处大,反复实践掌握它。,方位介词记忆歌诀,易错点1,through/a
25、cross辨析,across与through都表示“穿过”,但across表示动作是在某个物体的表面进行的; through表示动作是在某一物体内部或空间里进行的。乘船过海或过河用across,表示通过门、窗户、森林等用through。例:He can swim across the river.他能游过这条河。They walked through the forest.他们走过了森林。,易错点2,in / to / on辨析,A,B,A,A,B,B,B is in the east of A.,B is to the east of A.,B is on the east of A.,例:
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