八年級上冊Unit3知識點(diǎn)

1、八年級上冊Unit 3知識點(diǎn)1，比較級，最高級變化規(guī)則 一般在詞尾+ er或est；以e 結(jié)尾的加r或st；重讀閉音節(jié)雙寫輔音字母+ er或est；輔音字母+y結(jié)尾的，改y為i+ er或est；多音節(jié)詞和部分雙音節(jié)詞，加more或most。 不規(guī)則變化見書本P1142，比較級用法l 基本句型：主語+be+比較級+than+比較對象l 兩者相比較用比較級 eg：Who do you think is more outgoing，Lily or Lucy？l Very，more，quite，so，too等修飾原級；much，a little，a lot，a bit，far ，even等修飾比較級

2、eg：Im much/ a little / a lot / a bit /far more outgoing than my sister. Im even worse now.l 不能與人或事物自身相比較eg：He is taller than any other student in his class. China is larger than any country in Africa.l 比較對象要一致（that代替不可數(shù)名詞，those代替可數(shù)名詞復(fù)數(shù)，所有格，ones）eg：The weather in Harbin is much colder than that in Wu

3、han. The students of Class One study harder than those of Class Two. My bike is newer than Toms.l 比較級中出現(xiàn)of the two/ twins結(jié)構(gòu)時(shí)，adj比較級前要+the，不可用thanEg：Tom is the taller of the two brothers.l “get/ become+ 比較級+and +比較級”表示“變得越來越”（多音節(jié)或部分雙音節(jié)用“more and more+原級）Eg: It gets warmer and warmer when spring comes

4、. Youre getting more and more beautiful.l “the+比較級，the+比較級”表示“越，就越”Eg: The more you exercise, the stronger you will be.l “Asas”中間接原級，表示“與一樣”，否定為“not as/ soas”表示“不如”Eg: He is as tall as his father. He is not as/ so tall as his father.l “比較級+than”(more/ less +原級+than)與“not as/ soas”可以互換Eg: Im taller t

5、han you. Chinese is more important than Biology. Youre shorter than me. Biology is less important than Chinese Youre not as/ so tall as me. Biology is not as/ so important as Chinesel 比大/多/長/寬幾倍，用“主語+be+times+比較級+than+比較對象”Eg: Our classroom is twice larger than yours.l 重幾斤，高幾公分，大幾歲，用“主語+be+數(shù)量詞+比較級+t

6、han+比較對象”Eg: Im six years older than you.3，loudly大聲地，響亮地（多含噪音之意） aloud大聲地，出聲地（強(qiáng)調(diào)出聲）read aloud call aloud for help loud大聲地，高聲地，常與speak，shout，laugh，talk連用 響亮的，大聲的 loud voice4，fast強(qiáng)調(diào)速度快 run/ drive fast quickly強(qiáng)調(diào)動作、行動快 soon 強(qiáng)調(diào)時(shí)間間隔短5，competition體育，書法，朗讀，音樂等比賽 match 體育競技比賽，球類比賽 race 速度方面的競賽，賽跑，賽龍舟等6，win+比

7、賽，獎(jiǎng)項(xiàng) beat+人，團(tuán)隊(duì)7，ago 以前，用于一般過去時(shí)，放在一段時(shí)間后 before 在以前，通常用于完成時(shí)，放在時(shí)間點(diǎn)或事件之前8，the same asbe different from be similar to =be like9，be good at+ V-ing=do well in 擅長于 be good for 對有益 （be bad for對有害） be good to 對友好 （good 可用friendly，nice，kind替換） be good with和相處好=get on/ along well with10，true/ truly 指故事、說法、答案等與標(biāo)

8、準(zhǔn)事實(shí)、實(shí)際情況相符real/ really 指人或事客觀存在，不是想象的11，take care of=look after照顧care for 照料、關(guān)心某人，喜歡某人、某物care about 關(guān)心，計(jì)較，在乎12，make sb do sthmake sb/ sth +adj make me happymake sb +n. We made him monitor.make sb +過去分詞 She spoke aloud to make herself heard.make it 約定時(shí)間，做成某事，及時(shí)抵達(dá) Lets make it at 10:00. Dont worry. He

9、ll make it.13，both 位置：行前be 后both of them/ us=they/ we bothboth 作主語，謂語動詞用復(fù)數(shù)not both為部分否定，全部否定要用eithernot或者neitherbothand=not onlybut（also） 否定為：neithernor14，be popular with sb受某人歡迎 be popular in/ at在某地受歡迎15，it is +adj+for sb +to do sth （adj修飾to do sth）It is important for me to learn English.it is +adj

10、+of sb +to do sth （adj修飾sb） It is kind/ friendly/ nice of you to help me.16，bring out使顯現(xiàn)出17，share sth with sb和某人分享18，other “其他的，另外的”，后接名詞復(fù)數(shù)，有時(shí)other+n復(fù)數(shù)=othersanother “又一（個(gè)），另一（個(gè)）”，泛指總數(shù)為三個(gè)或三個(gè)以上中的任意一個(gè)，后接名詞單數(shù)。the other“（兩者中的）另一個(gè)”，常與one連用，“onethe other”表示“一個(gè)，另一個(gè)”19，heart learn sth by heart用心記 lose heart

11、灰心20，break the law/ rules/ world record違法/違規(guī)/打破世界紀(jì)錄Break off 打斷 break away from擺脫，脫離 break into破門而入 break in插嘴Break down出故障 break out爆發(fā) break up散火 break ones words食言Have a break/ rest休息會兒21，laugh發(fā)笑 laugh at 嘲笑 Smile微笑 smile at對微笑22，定語從句：在復(fù)合句中修飾名詞或代詞的從句叫定語從句。被定語從句修飾的名詞或代詞叫做先行詞。引導(dǎo)定語從句的詞稱為關(guān)系詞。關(guān)系詞位于先行詞和

12、定語從句之間，起聯(lián)系作用，同時(shí)又作定語從句的一個(gè)成分。定語從句的關(guān)系詞引導(dǎo)定語的關(guān)系代詞有：that, who (whom, whose), which; 關(guān)系副詞（在定語從句中只能作狀語，且不能省略）有：when, where, why等。關(guān)系詞的選擇主要取決于兩個(gè)因素：(1)先行詞是什么(2)先行詞在定語從句中作什么成分。關(guān)系代詞（that，who，which，whose，whom）引導(dǎo)的定語從句。that/ who在從句中作主語，先行詞為人。Eg：The girl that/ who is reading is my sister.that/ which在從句中作主語或賓語，先行詞為物。

13、 Eg：The book that/ which is on the desk belongs to Tom.(主) He came back for the book that/ which he had forgotten.（賓）whose在從句中作定語，先行詞為人或物。 Eg：This is the pencil whose point is broken. That is the girl whose mother died two years ago.whom/ that在從句中作賓語，先行詞為人。 Eg：The girl whom/ that I spoke to is my co

14、usin.關(guān)系副詞（when/ where/ why）引導(dǎo)的定語從句。When在從句中作時(shí)間狀語，其先行詞是表示時(shí)間的詞（day/ year/ season等）。例如：我永遠(yuǎn)不會忘記我入團(tuán)的那一天。I shall never forget the day_I joined the League.解放軍戰(zhàn)士在人們最需要的時(shí)刻來到。The PLA men come at the time _ the people need them most.Where在定語從句中作地點(diǎn)狀語，其先行詞是表示地點(diǎn)的詞（place/ town/ home/ house）例如：你還記得我們初次見面的地方嗎？Do you still remember the place _we first met?近來你去過你成長的小城嗎？Have you been to the town _ you grew up recently?Why在從句中作原因狀語，其先行詞是reason。例如：沒有人知道他為什么上學(xué)總遲到。Nobody knows the reason _ he is often late for school23，call sb at +電話號碼24，infor