版權(quán)說明:本文檔由用戶提供并上傳,收益歸屬內(nèi)容提供方,若內(nèi)容存在侵權(quán),請進(jìn)行舉報或認(rèn)領(lǐng)
文檔簡介
1、(人教版),第9課時八年級(下)Units 12),英語,重點詞匯 1. (v.)躺;平躺 2 (n.)問題;事情 3 (v.)咳嗽 4 (adj.)喪失能力的;有殘疾的 5 (v.)理解 6 (v.)變化;改變 7 (adj.)激動的;興奮的 8 (adj.)聰明的;聰穎的,lie,matter,cough,disabled,understand,change,excited,clever,9 (adj.)強壯的;強健的 10 (v.)歡呼;喝彩 11 (n.)胃痛;腹痛 12. (v.)(使)疼痛;受傷 13 (n.)情況;狀況 14 (v.)意思是;打算;意欲 15 (n./v.)控制;
2、約束;管理 16 (v./n.)義務(wù)做;自愿做;志愿者 17 (n.)公告牌;通知;布告 18 (adj.)孤獨的;寂寞的,strong,cheer,stomachache,hurt,situation,mean,control,volunteer,notice,lonely,19. (pron.)幾個;數(shù)個 20 (n.)滿足;滿意 21 (v.)募捐;征集 22 (v.)修理;修補 23 (v.)安裝;使固定 24 (adj.)聾的 25 (v.)拿;提;扛 26 (v.)想象;設(shè)想 27 (n.)仁慈;善良 28 (v.)訓(xùn)練;培訓(xùn) 29 (n.)物主;主人 30 (adv.)單獨;孤獨
3、,several,satisfaction,raise,repair,fix,deaf,carry,imagine,kindness,train,owner,alone,詞匯拓展 1.kindness(友善的;和藹的)kind 2train(訓(xùn)練;培訓(xùn))training 3blind(失明;盲目)blindness 4sick(同義詞)ill 5satisfaction(滿足的;滿意的)satisfied(使?jié)M意;使?jié)M足)satisfy 6decision(決定)decide 7owner(自己的;本人的)own(擁有;有)own 8knife(復(fù)數(shù))knives 9importance(重要
4、的)important,10ourselves(主格)we(賓格)us(形容詞性物主代詞)our(名詞性物主代詞)ours 11.death(消失;死亡)die(死的;失去生命的)dead 12cheer(快樂的;高興的;興高采烈的)cheerful 13foot(復(fù)數(shù))feet 14toothache(牙齒)tooth 15passenger(經(jīng)過;通過)pass 16lie(躺)(過去式)lay(過去分詞)lain(現(xiàn)在分詞)lying 17open(反義詞:關(guān);關(guān)閉)close(反義詞:關(guān)閉的;關(guān)著的)closed 18joy(高興的;快樂的)joyful(不快活的;沒有歡樂的)joyl
5、ess,重點短語 1.用盡;耗盡run out (of) 2切除cut off 3掌管;管理be in control of 4放棄give up 5繼續(xù)或堅持(做某事)keep on (doing sth.) 6(使)變得更高興;振作起來cheer up 7分發(fā);散發(fā)give out 8曾經(jīng);過去used to 9贈送;捐贈give away 10建起;設(shè)立set up,11.影響;有作用make a difference 12感冒have a cold 13躺下lie down 14量體溫take ones temperature 15發(fā)燒have a fever 16下車get off
6、17習(xí)慣于;適應(yīng)于be used to 18使驚訝的;出乎意料to ones surprise 19造成麻煩(或煩惱)get into trouble 20摔倒fall down,重點句型 1._the _Ben? 本怎么了? He _He has a_.他自己受傷了。他背痛。 2_she do?她該怎么辦? She should_her_ 她應(yīng)該量體溫。 3She talked _yesterday and didnt _water. 昨天她說話太多,并且沒有喝足夠的水。,Whats,matter with,hurt himself,sore back,What should,take,te
7、mperature,too much,drink enough,4You could _the city parks.你可以幫助打掃城市公園。 5. _Mr.Wang and the_,the doctors saved the man _ 多虧了王先生和乘客們,醫(yī)生及時救治了那個人。 6We cant _a plan. 我們不能推遲制訂計劃了。 7_you cant_or use your hands_. 想象一下你不能走或自如地用你的手。 8Im only _to have a “doghelper” _your_ 因為你的仁慈,我才能有一只“導(dǎo)盲犬”。,help to clean up,
8、Thanks to,passengers,in time,put off making,Imagine,walk,easily,able,because of,kindness,一、根據(jù)句意和漢語提示寫單詞完成句子。 1There is a dog _(躺) on the ground.Whats wrong? 2How many _(乘客) are there on the bus? About fifty. 3How many _(千克) of apples would you like? 4The _(死) of the old woman made the whole city sad
9、. 5She stayed in the house alone,but she never felt _(寂寞的),lying,passengers,kilos,death,lonely,6On the way to solve the problem,we have met many _(困難) 7After winning the final match,we were all very _(激動的) 8We were moved deeply by her _(善良) 9I had to walk there because my bike was _(破損的) 10You cant
10、_(想象) how hard the math problem is.,difficulties,excited,kindness,broken,imagine,二、用括號中所給單詞的適當(dāng)形式填空。 11One of her _(foot) was hurt badly while running. 12She likes to work out the problem all by _(she) 13If you can know the _(important) of the knowledge,you will work harder. 14You must be serious and
11、 careful before making any _(decide) 15He always treats others with a lot of _(kind),feet,herself,importance,decisions,kindness,Knives,16 (knife) are used for cutting things off. 17We all felt sad and sorry when we heard his _(die) 18I think she can solve the problem without any _(difficult) 19The _
12、(satify) on her face shows that youre done a good job. 20The _(feel) of a pain makes him nervous and sad.,death,difficulties,satisfaction,feeling,三、從方框中選擇恰當(dāng)?shù)亩陶Z并用其正確形式完成下列各句。 get out of,give up,agree to,cut off,give out,clean up,be in control of,run out of,take ones temperature, make a difference 21.
13、They _food to some homeless people yesterday afternoon. 22We are going to _the streets in our town. 23She _her money and borrowed some from me. 24Will the bad weather _to your work? 25The doctor asked Lucys father _smoking.,gave out,clean up,ran out of,make a difference,to give up,get out of,26The d
14、oor is locked,so I couldnt _the room. 27Jim _a small piece of bread and gave it to me. 28Ive_ and it seems a little higher. 29Alice didnt _go there on foot,because her foot was hurt. 30Who will _the machine instead of Mr.Black?,cut off,taken my temperature,agree to,be in control of,Whats the matter?
15、怎么了? I have a cold.(From:Unit 1/Section A)我感冒了。,Whats the matter和have疾病名詞,【題組訓(xùn)練】 .單項選擇。 1You look unhappy,John._? Well,I found my mother looking through my mobile phone yesterday.(2015,山西) AYou want to rest BWhats wrong CHow do you do,B,C,2.You look really tired._?(2014,云南) I didnt sleep well last n
16、ight.I had a headache. AHow about you BWhat should I do CWhats the matter DHow are you feeling now 3Hi,John._? Its Lucy,my dog.Her leg is hurt.(2015,江西) AHow are you BWhats the matter CWhos that DWhats Lucy like,B,C,4Whats the matter?(2015,貴港) I have a_I have to go to the doctor. Ahead Btooth Ccold
17、Dnose 5Tony,whats _ matter with you? I have _ toothache.(2014,萊蕪) Aa,the Bthe,a C/,the Dthe,/,B,.按要求完成句子,每空詞數(shù)不限。 1你的電腦出了什么問題?(matter)(漢譯英,必須用上所給的提示詞) _ 2Jim had_a_fever last Sunday.(對畫線部分提問) _with Jim? 3Whats wrong with your son?(改為同義句) _with your son?,Whats the matter with your computer?,What was t
18、he matter with,Whats the matter,(1)Whats the matter (with sb./sth.)?用于詢問病情或某人遇到了什么麻煩。同義的表達(dá)還有Whats wrong(with sb./sth.)?或Whats the trouble (with sb./sth.)? (2)“have表示疾病的名詞”意為“患(病)”。 Aron did not give up after the accident and keeps on climbing mountains today.(From:Unit 1/Section B)那次事故之后,阿倫并沒有放棄登山,他
19、現(xiàn)在仍然繼續(xù)登山。,【題組訓(xùn)練】 .單項選擇。 1No matter how hard it is,dont _Things will be better in the future.(2015,海南) Agive out Bgive up Cgive away 2Smoking is not allowed in public places since May 1st.It may be a good chance for some people to _ smoking.(2015,舟山) Aput up Bgive up Cpick up Dlook up,B,B,give up,D,3
20、As we know,many successful people never _ no matter what difficulties theyve had.(2015,隨州) Astay up Bcheer up Ctake up Dgive up 4We must _ using plastic bags in order to protect our earth.(2014,賀州) Agive out Bgive up Cgive away Dgive in 5He failed to break the world record for long jump many times,b
21、ut he never _ his hope.(2015,襄陽) Atook off Bput away Cgave up Dturned down,B,C,give up意為“放棄”,后接名詞、代詞或v.ing形式作賓語,give up doing sth.stop doing sth.,意為“放棄做某事”。give up是“動詞副詞”型短語,當(dāng)其賓語是代詞時,要放在短語中間 We cant put off making a plan.(From:Unit 2/Section A)我們不能推遲制定計劃了。,put off,【題組訓(xùn)練】 .單項選擇。 1We have to _ the bik
22、e ride because of the bad weather.(2015,濟(jì)寧) Aput off Bturn off Ctake off Dget off 2The meeting _ because of the smog in Northern China last week. Oh,its too bad!We should take action to improve the air quality.(2015,鄂州) Aput out Bwas put out Cput off Dwas put off,A,D,3He ate a lot and did little exe
23、rcise,so he _ 10 pounds.(2015,蘭州) Aput away Bput out Cput off Dput on 4Mom,can I leave my homework for tomorrow? Im afraid not.Dont _ what you can do today till tomorrow.(2014,荊門) Aput up Bput on Cput out Dput off,D,D,.根據(jù)漢語完成句子,每空一詞。 1會議已經(jīng)被推遲到下周。 The meeting has been _till next week. 2不要推遲去看醫(yī)生。 Dont
24、 _to the doctor. 3他不應(yīng)該推遲看望他們。 He shouldnt _visiting them.,put off,put off going,put off,put off是一個“動詞副詞”型短語,意為“推遲;拖延”,后接名詞或動名詞作賓語。 【拓展】含put的??级陶Z put on穿上;增加;上演 put up掛上 put away放好;收起來 put down放下;記下 Or imagine you cant walk or use your hands easily.(From:Unit 2/Section B)或者想象一下你不能走路或自如地使用你的手。,【題組訓(xùn)練】
25、.單項選擇。 1Rose,you are so thin.You should eat more,_ youll make yourself ill.(2015,安順) Aor Bif Cand Dbut 2Youd better take care,_ you will hurt your eyes.(2015,重慶) Aso Bbut Cor Dand,imagine和or,A,C,3Youd better wake up Tom at 6:30 _ he will be late for the match. (2015,德州) Aif Bor Cand Dbut 4Dont you t
26、hink that the Internet is closely connected with our daily life? Yes,of course.Can you _ our life without it in the future?(2014,荊門) Aconsider Bimagine Cmention Dexpect 5Dear,what about going to the beaches for vacation? Great!_ were lying on the beach in the sun,enjoying music.It must be great fun!
27、(2014,荊州) APretend BPromise CMention DImagine,B,B,D,.根據(jù)漢語完成句子,每空一詞。 1你能想象胖人爬山嗎? Can you _fat persons _mountains? 2沒有人能想象出下一步會發(fā)生什么。 No one can _would happen next. 3快點,否則你會遲到的。 Hurry up,_ youll be _ 4我不喜歡游泳和跑步。 I _like swimming _running.,imagine,climbing,imagine what,or,late,dont,or,(1)imagine是動詞,意為“想
28、象;設(shè)想”,后面可以接名詞、v.ing形式或從句作賓語;也可接現(xiàn)在分詞的復(fù)合結(jié)構(gòu),即“imagine賓語doing”。 【拓展】當(dāng)主語是第一人稱時,如果imagine后接的賓語從句含有否定意義,通常把否定詞轉(zhuǎn)移到主句。 (2)or為連詞,意思為“或;否則”。,【題組訓(xùn)練】 .單項選擇。 1WallE felt _ when he was left _ on the Earth. Alonely,lonely Blonely,alone Calone,alone Dalone,lonely,B,alone/lonely,2It seems that the old man feels _Lets
29、 go over and talk with him. Youd better let him _,or you may get into trouble. Aalone,lonely Blonely,alone Calone,alone Dlonely,lonely 3The boy did his homework with the help of his father in the past.But now he can do it alone(2014,黃岡)_ Afor himself Bon himself Cby himself Dwith himself,B,C,4I dont
30、 think you can finish the work by_yourself_ Alonely Balone Ceasily Deasy 5Though he is _ at home,he doesnt feel _ for he has many things to do.(2014,綏化) Aalone,lonely Blonely,alone Calone,alone,B,A,.根據(jù)漢語完成句子,每空一詞。 1當(dāng)父母出去工作的時候,那小孩感到寂寞。 The child _when her parents went out to work. 2第二天,他獨自去了森林。 The n
31、ext day he _to the forest _ 3那是一個荒涼的島嶼,你最好不要去。 That is _island.Youd better not go there.,felt lonely,went,alone,a lonely,【題組訓(xùn)練】 .單項選擇。 1Li Ming used _ on the right in China,but he soon got used _ on the left in England.(2015,孝感) Ato drive,to drive Bdriving,driving Cto driving,to drive Dto drive,to d
32、riving,D,used to do sth./be (get) used to doing,2The Greens used to live in London and now they _ in Beijing.(2014,揚州) Aused to live Bare used to live Care used to living Dare used for living 3Liu Huan,a famous male singer,has long hair,because he _ long hair.(2014,棗莊) Aused to have Bis used to havi
33、ng Cis used for having Dis used to have,C,B,4What do you usually have for breakfast? I used to _ dumplings,but these days Im used to _ bread and milk.(2015,隨州) Aeat,have Beating,having Ceating,have Deat,having 5I hear your grandpa has an old cup in your home. Yes.It _ drinking tea long ago and my gr
34、andpa _ drink tea with it when he was young.(2015,襄陽) Awas used to,was used to Bused for,used to Cwas used for,was used to Dwas used for,used to,D,D,.根據(jù)漢語完成句子,每空詞數(shù)不限。 1我爸爸過去常常開車上班,現(xiàn)在坐公交車。(used to do)(2014,濱洲) _ 2他習(xí)慣于晚飯后散步。(2014,鹽城) He _after supper. 3他過去常常整夜玩電腦游戲,但現(xiàn)在他寧愿把時間花在功課上也不上網(wǎng)了。(2014,淮安) He _pl
35、ay computer games all night,but now he _spend his time on his lessons than on the Internet.,My father used to drive to work,now he goes to work by bus.,is used to walking,used to,would rather,備考跟蹤訓(xùn)練,一、單項選擇。 1Tom failed in the exam again _ he tried his best.(2015,濟(jì)寧) Aif Bunless Cthough Dbecause 2Dri
36、nking alcohol(白酒) can be _ your brains.So people in China arent allowed to drink it if they are younger than 18.(2015,東營) Agood at Bgood with Charmful to Dthirsty for,C,C,3_? I have a headache and I dont feel like eating anything.(2014,孝感) AHow are you BWhat can I do for you CWhats the matter with y
37、ou DHow do you like it 4Why do you have the talent show? Because we want to_some money to help build schools in Yushu. Alend Btake Clook Draise 5_ the development of economy,my hometown is becoming more and more beautiful.(2015,畢節(jié)) AIn BOn CBy DWith,C,D,D,6Why are you in such a hurry,Mike?(2014,安順)
38、There _ an NBA basketball game in ten minutes. Awill have Bwill be Cis going to have Dare going to be 7Alice,dont put your things here,_ OK,I will.(2015,銅仁) Aput away them Bput on them Cput them away Dput them on 8Is your headache getting _? No,its worse.(2014,泰安) Abetter Bbad Cless Dwell,B,C,A,9Tom
39、,whats wrong with you?You look tired. Oh,I _ late to watch a football game last night.I slept for only two hours.(2015,荊門) Agave up Bstayed up Cset up Dlooked up 10I have great _ in finishing the work by myself.Could you help me? No problem.(2015,聊城) Afun Bsuccess Cadvice Ddifficulty,B,D,11After tra
40、ining for two months,he _ won the first prize for the competition.(2014,義烏) Afinally Bactually Cusually Dhardly 12I _ get up late,but now I _ getting up early. Aused to,used to Bused to,am used to Cam used to,am used to Dam used to,used to 13A popular sport,pingpong,_ by many around China,for fun an
41、d exercise.(2014,綿陽) Aare enjoyed Bwas enjoyed Cwere enjoyed Dis enjoyed,A,B,D,14His father retired(退休) last year,but he _ the company. Astill works Bstill work for Cstill is in the control of Dis still in control of 15David Burts dream in China is to go into the west and _ an early childhood school
42、 there. Aclean up Blook up Cgive up Dset up,D,D,二、完形填空。(2014,河南) I was flying to New York at night.Suddenly,a storm broke and the plane began to be tossed(顛簸) around. When I looked _16_ the plane,I could see that nearly all the passengers were worried and afraid.The future seemed terrible and many w
43、ere _17_ if they would make it through the storm. Then,I _18_ saw a little girl.It seemed that the storm meant _19_ to her.She sat on her seat reading a book.Sometimes she closed her eyes,then she would read again,with no _20_ or fear in her eyes.When the other passengers were scared(驚恐的) half to de
44、ath,that child was completely calm and _21_I couldnt believe my eyes.,When the plane finally reached New York,I was not surprised to _22_ that all the passengers were hurrying to come out.I stopped and spoke to the girl whom I had _23_ for such a long time.I asked _24_ she had not been afraid. The c
45、hild replied,“My daddy is the _25_,and he is taking me home.”,()16.A.atBaroundCupDinto ()17.A.wondering BexpectingCdreaming Drealizing ()18.A.probably BluckilyCsuddenly Dcertainly ()19.A.something BanythingCeverything Dnothing ()20.A.pride Bworry Canger Dregret ()21.A.unafraid Bnervous Cactive Dtire
46、d ()22.A.say Bhear Cfind Dthink ()23.A.known BwatchedChelped Dprotected ()24.A.whether Bhow Cwhen Dwhy ()25.A.guard BdriverCpilot Dtraveller,B,A,C,D,B,A,C,B,D,C,三、閱讀理解。(2015,廣州) This is a tale of two friendsone is blind,the other has no arms.On their own,the two are “disabled”But together,they are a
47、 powerful team that has changed part of their village in North Chinas Hebei Province into a rich,green forest.Meet 53yearold Jia Haixia and Jia Wenqi! Their story began in 2000,when Haixia,who was already blind in his right eye,lost his left one after an illness.Wenqi lost his arms in an accident wh
48、en he was just three.Neither could find a job,so the two decided to team up.They rented some poor land and began to plant trees.In return,the local officials paid them a small fee.,Haixia and Wenqi never imagined that they would end up creating an environmental paradise.Their forest now has over 10,
49、000 trees,hundreds of birds and many other wild animals.In addition,it saves the village from river flooding during the rainy season. When the friends work together,they focus on their strengths not their disabilities.Their day begins at 7 am.when the sightless Haixia carries Wenqi across the river
50、to get to their worksite.Since they cannot afford to buy young trees to plant,the two use branches from existing trees.Haixia climbs to the treetop and with Wenqis direction,selects the perfect branch.He then digs a hole and carefully plants it.Finally Wenqi waters the area.,Though hardworking,the m
51、en dont make much money.But as Wenqi puts it,“We_stand_on_our_own_feet,so_the_fruits_of_our_work_taste_sweeter” Neither Haixia nor Wenqi cares about money.Together,they already have everything they needa perfect pair of eyes,two strong hands,and the best friendship in the world! ()26.Why did Haixia
52、and Wenqi start working together? AHaixia needed someone to help him. BThey both needed a way to make money. CThey wanted to improve the environment. DThey were required to do so by local officials.,B,()27.Haixia and Wenqis forest has helped the village by _ Astopping floods in the rainy season Binc
53、reasing the number of tourists Cmaking the villagers richer Dproviding more farmland ()28.Why do Haixia and Wenqi plant tree branches? AThey are easy to get. BThey do not cost money. CThey can grow very quickly. DThey are preferred by animals.,A,B,()29.In Paragraph 5,when Wenqi says “We stand on our
54、 own feet,so the fruits of our work taste sweeter”,he means that “_” Athey hope to make the forest even better Bthe fruits from their trees are very sweet Cthey are proud not to depend on others Dthey are able to do any difficult work ()30.What can we learn from this story? ANever give up and you wi
55、ll succeed. BWe should help the disabled to work. CTry your best when facing difficulties. DWe can achieve more with teamwork.,C,D,四、任務(wù)型閱讀。(2015,天津) Do you know that each child in school catches six to ten colds every year?Though there is no cure for colds,there are some suggestions for you to avoid getting a cold.First,you can avoid catching a cold by practicing healthy habits.Begin by eating healthy foods.Eat lots of fruits and vegetables and drink milk and juice.Other healthy habits include getting plenty of sleep at night a
溫馨提示
- 1. 本站所有資源如無特殊說明,都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請下載最新的WinRAR軟件解壓。
- 2. 本站的文檔不包含任何第三方提供的附件圖紙等,如果需要附件,請聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶所有。
- 3. 本站RAR壓縮包中若帶圖紙,網(wǎng)頁內(nèi)容里面會有圖紙預(yù)覽,若沒有圖紙預(yù)覽就沒有圖紙。
- 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
- 5. 人人文庫網(wǎng)僅提供信息存儲空間,僅對用戶上傳內(nèi)容的表現(xiàn)方式做保護(hù)處理,對用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯,并不能對任何下載內(nèi)容負(fù)責(zé)。
- 6. 下載文件中如有侵權(quán)或不適當(dāng)內(nèi)容,請與我們聯(lián)系,我們立即糾正。
- 7. 本站不保證下載資源的準(zhǔn)確性、安全性和完整性, 同時也不承擔(dān)用戶因使用這些下載資源對自己和他人造成任何形式的傷害或損失。
最新文檔
- 大數(shù)據(jù)監(jiān)聽技術(shù)介紹
- 2026年上海市普陀區(qū)初三語文一模試卷(暫無答案)
- 新生兒隱形殺手VKDB及新型口服維生素K1滴劑的破局
- 保溫砂漿外墻外保溫工法深度解析
- 2025-2030中國智能遙控器距離傳感器行業(yè)市場現(xiàn)狀供給需求評估投資布局規(guī)劃分析研究報告
- 2025至2030中國智能電網(wǎng)建設(shè)現(xiàn)狀及未來發(fā)展規(guī)劃評估報告
- 2025-2030中國環(huán)丙氟哌酸行業(yè)供需風(fēng)險及前景應(yīng)對策略分析研究報告
- 2025-2030電熨斗產(chǎn)業(yè)政府戰(zhàn)略管理與區(qū)域發(fā)展戰(zhàn)略研究咨詢報告
- 2026交通銀行秋招面試題及答案
- 2026年體育行業(yè)電子競技產(chǎn)業(yè)發(fā)展創(chuàng)新報告
- 東南大學(xué)附屬中大醫(yī)院2026年招聘備考題庫及答案詳解參考
- 2025新疆阿瓦提縣招聘警務(wù)輔助人員120人參考筆試題庫及答案解析
- 貴州國企招聘:2025貴州鹽業(yè)(集團(tuán))有限責(zé)任公司貴陽分公司招聘考試題庫附答案
- 2025-2026學(xué)年秋季學(xué)期教學(xué)副校長工作述職報告
- 2026年安徽國防科技職業(yè)學(xué)院單招職業(yè)適應(yīng)性考試題庫及完整答案詳解1套
- 2026年服裝電商直播轉(zhuǎn)化技巧
- 2025-2026學(xué)年小學(xué)美術(shù)浙美版(2024)二年級上冊期末練習(xí)卷及答案
- 會所軟裝合同范本
- 沖刺2026中考-科學(xué)備考班會課件
- 醫(yī)院信息系統(tǒng)零信任訪問控制方案
- 2025年7月國開電大??啤豆残姓W(xué)》期末紙質(zhì)考試試題及答案
評論
0/150
提交評論