高三化学一轮复习 专题2 第1单元 氧化还原反应课件 苏教版 (306)

1、第二部分第二部分 语法专题语法专题一、名词和冠词一、名词和冠词语法精讲语法精讲一、名词一、名词考点一名词的数考点一名词的数1.1.物质名词物质名词( (如如:air,water,milk,paper,money):air,water,milk,paper,money)和抽象名词和抽象名词( (如如:happiness,:happiness, health,knowledge,traffic) health,knowledge,traffic)一般都是不可数名词。一般都是不可数名词。要熟记下列名词要熟记下列名词, ,它们在英语中一般是不可数名词它们在英语中一般是不可数名词:advice,bagg

2、age/:advice,baggage/ luggage,furniture,equipment,fun,weather,information,luck, luggage,furniture,equipment,fun,weather,information,luck, progress,work,homework,news,word ( progress,work,homework,news,word (消息消息) )等。等。有些物质名词表示不同种类时可用复数形式。如有些物质名词表示不同种类时可用复数形式。如: : Mary bought a variety of fruits and v

3、egetables for the party. Mary bought a variety of fruits and vegetables for the party. 玛丽为聚会买了各种水果和蔬菜。玛丽为聚会买了各种水果和蔬菜。有些物质名词可用作可数或不可数名词有些物质名词可用作可数或不可数名词, ,不过意义有改变。如不过意义有改变。如:coffee :coffee 作为物质名词作为物质名词( (咖啡咖啡) ) 不可数不可数, ,但但two coffees two coffees 表示两杯咖啡。表示两杯咖啡。特别提示特别提示2.2.不可数名词常用不可数名词常用(a) little,muc

4、h,a great deal of(a) little,much,a great deal of等修饰等修饰, ,可数名词可数名词 常用常用(a) few,many,a number of(a) few,many,a number of等修饰。等修饰。a lot of,lots of,plenty a lot of,lots of,plenty of of可修饰可数名词和不可数名词。可修饰可数名词和不可数名词。3.3.抽象名词具体化抽象名词具体化 具有某种特性、状态、特点、情感、情绪的人或事具有某种特性、状态、特点、情感、情绪的人或事, ,具体指特定的某具体指特定的某 一件事时一件事时, ,这

5、一抽象名词可作为可数名词。这一抽象名词可作为可数名词。difficultydifficulty困难困难;a difficulty;a difficulty一件难事一件难事failurefailure失败失败;a failure;a failure一个失败者一个失败者; ;一件失败的事一件失败的事successsuccess成功成功;a success;a success一位成功者一位成功者; ;一件成功的事一件成功的事surprisesurprise惊奇惊奇;a surprise;a surprise一件令人吃惊的事一件令人吃惊的事honourhonour荣誉荣誉;an honour;an h

6、onour一位带来荣誉的人一位带来荣誉的人, ,一件带来荣誉的事一件带来荣誉的事Failure is the mother of success.Failure is the mother of success.失败是成功之母。失败是成功之母。His new book was a great success.His new book was a great success.他的新书非常成功。他的新书非常成功。4.4.单数名词变为复数名词单数名词变为复数名词 一般情况加一般情况加-s,-s,以以s,sh,ch,xs,sh,ch,x等结尾加等结尾加-es-es。以。以ce,se,zece,se,z

7、e等结尾加等结尾加-s-s。其他。其他 名词复数的变化如下名词复数的变化如下: : (1) (1)以以-o-o结尾的名词变为复数时结尾的名词变为复数时, ,常在词尾加常在词尾加-s,-s,但下列名词要加但下列名词要加-es,-es,它们它们 是是:hero,echo,potato,tomato:hero,echo,potato,tomato 记忆口诀记忆口诀 (2)(2)以以-f-f或或-fe-fe结尾的名词变为复数时结尾的名词变为复数时, ,一般一般f f或或fefe去掉加去掉加-ves,-ves,它们是它们是: : self,life,thief,wife,knife,leaf,shelf

8、,wolf,half self,life,thief,wife,knife,leaf,shelf,wolf,half 记忆口诀记忆口诀 记忆口诀记忆口诀 (3)“man/woman+n.”(3)“man/woman+n.”变复数时变复数时, ,作定语的作定语的man/womanman/woman和中心词都要和中心词都要 变复数。变复数。 men teachersmen teachers男老师男老师 women engineerswomen engineers女工程师女工程师考点二名词的构词法考点二名词的构词法1.1.动词变名词的后缀动词变名词的后缀后缀后缀例词例词-ion/-tion/-ion

9、/-tion/-sion/-ation-sion/-ationcorrectcorrectioncorrectcorrection改正改正attractattractionattractattraction吸引吸引concludeconclusionconcludeconclusion结论结论; ;结束结束decidedecisiondecidedecision决定决定admitadmissionadmitadmission接纳接纳; ;准许入学准许入学inviteinvitationinviteinvitation邀请邀请explainexplanationexplainexplanatio

10、n解释解释expectexpectationexpectexpectation期望期望-er/-or-er/-orteachteacherteachteacher老师老师announceannouncerannounceannouncer播音员播音员conductconductorconductconductor指挥指挥; ;售票员售票员-ment-mentpunishpunishmentpunishpunishment惩罚惩罚achieveachievementachieveachievement功绩功绩; ;成就成就argueargumentargueargument辩论辩论; ;论据论据

11、equipequipmentequipequipment装备装备; ;设备设备-ance/-ence-ance/-enceappearappearanceappearappearance出现出现; ;外貌外貌performperformanceperformperformance表演表演; ;节目节目existexistenceexistexistence存在存在; ;生存生存preferpreferencepreferpreference偏爱偏爱-ing-inghearhearinghearhearing听力听力; ;听觉听觉beginbeginningbeginbeginning开始开始-

12、ure/-ture-ure/-turefailfailurefailfailure失败失败presspressurepresspressure压力压力departdeparturedepartdeparture离开离开; ;出发出发-y-yrecoverrecoveryrecoverrecovery恢复恢复; ;痊愈痊愈discoverdiscoverydiscoverdiscovery发现发现其他其他choosechoicechoosechoice选择选择varyvarietyvaryvariety多样化多样化; ;种类种类tendtendencytendtendency趋向趋向; ;趋势趋

13、势2.2.形容词变名词的后缀形容词变名词的后缀后缀后缀例词例词-age-ageshortshortageshortshortage不足不足; ;短缺短缺-cy-cyefficientefficiencyefficientefficiency效率效率; ;功效功效fluentfluencyfluentfluency流利流利; ;流畅流畅accurateaccuracyaccurateaccuracy准确性准确性privateprivacyprivateprivacy隐私隐私; ;私密私密-dom-domfreefreedomfreefreedom自由自由; ;自主自主wisewisdomwise

14、wisdom明智明智; ;智慧智慧-ence-encedifferentdifferencedifferentdifference差异差异silentsilencesilentsilence沉默沉默-ness-nessweakweaknessweakweakness虚弱虚弱; ;弱点弱点kindkindnesskindkindness仁慈仁慈; ;好意好意carelesscarelessnesscarelesscarelessness粗心大意粗心大意-th-thstrongstrengthstrongstrength力气力气; ;强项强项warmwarmthwarmwarmth温暖温暖; ;热

15、情热情-y-y-ty-ty-ity-ityhonesthonestyhonesthonesty诚实诚实difficultdifficultydifficultdifficulty困难困难cruelcrueltycruelcruelty残酷残酷; ;残暴残暴safesafetysafesafety安全安全disabledisabilitydisabledisability无能无能; ;伤残伤残responsibleresponsibilityresponsibleresponsibility责任责任二、冠词二、冠词 冠词包括不定冠词冠词包括不定冠词a/ana/an和定冠词和定冠词the,the,

16、不用冠词的情况也可称为零冠词。不用冠词的情况也可称为零冠词。a/ana/an的基本含义为的基本含义为“一个一个”, ,表泛指表泛指;the;the的基本含义是的基本含义是“这个这个, ,那个那个”, ,表表特指。通常第一次出现的可数名词前用特指。通常第一次出现的可数名词前用a/ana/an修饰修饰, ,重复出现时用重复出现时用thethe修饰。修饰。考点一不定冠词考点一不定冠词(a/an)(a/an)的用法的用法( (八个八个“一一”) )“一一”(=one)(=one)Ill return in a day or two.Ill return in a day or two.一两天我就回来。

17、一两天我就回来。“每一每一” (=per)(=per)We have eight classes a day.We have eight classes a day.我们每天上八节课。我们每天上八节课。“同一同一”(=the same)(=the same)The children are of an age.The children are of an age.这些孩子们同岁。这些孩子们同岁。“一类一类”(=(=复数名词复数名词) )A horse is a useful animal.A horse is a useful animal.马是一种有用的动物。马是一种有用的动物。“任一任一”

18、(=any)(=any)A dictionary is enough.A dictionary is enough.一本词典足够。一本词典足够。“某一某一”(=a certain)(=a certain)A Mr.Smith is waiting to see you.A Mr.Smith is waiting to see you.一位史一位史密斯先生正等着见你。密斯先生正等着见你。“一个、一场、一次、一个、一场、一次、一件一件”( (抽象抽象名词名词) )As a manager,he is a success while as a As a manager,he is a success

19、 while as a father he is a failure.father he is a failure.作为一名经理作为一名经理, ,他他是位成功者是位成功者, ,而作为一名父亲他是个失败者。而作为一名父亲他是个失败者。“一种一种( (份份, ,阵阵)”)”( (物质名词物质名词) )What a heavy rain!What a heavy rain!多大的一场雨啊多大的一场雨啊! !考点二定冠词考点二定冠词thethe的用法的用法1.1.特指上文提及的或读者清楚的或受定语修饰的人或物。特指上文提及的或读者清楚的或受定语修饰的人或物。 Where is the teacher

20、you talked about yesterday?Where is the teacher you talked about yesterday? 你昨天谈到的那位老师在哪儿你昨天谈到的那位老师在哪儿? ?2.2.用于单数可数名词前用于单数可数名词前, ,表示整个类属。表示整个类属。 The tiger is in danger of becoming extinct.The tiger is in danger of becoming extinct. 老虎濒临灭绝。老虎濒临灭绝。 Alexander Bell invented the telephone in 1876.Alexand

21、er Bell invented the telephone in 1876. 1876 1876年亚历山大年亚历山大贝尔发明了电话。贝尔发明了电话。3.3.用于某些形容词、分词前表示一类人用于某些形容词、分词前表示一类人/ /物或用在姓氏复数前表示一家人。物或用在姓氏复数前表示一家人。 The Greens live a happy life.The Greens live a happy life. 格林一家人过着幸福的生活。格林一家人过着幸福的生活。 The wounded were sent to the hospital immediately.The wounded were se

22、nt to the hospital immediately. 受伤者被立刻送往医院。受伤者被立刻送往医院。4.4.表示世界上独一无二的事物。如表示世界上独一无二的事物。如:the moon,the sun,the earth,the universe,:the moon,the sun,the earth,the universe, the world,the sky the world,the sky等。等。 当这些名词前有修饰语时当这些名词前有修饰语时, ,则要用不定冠词。如则要用不定冠词。如:a bright moon,a new :a bright moon,a new world

23、world。有些事物虽然也是独一无二的有些事物虽然也是独一无二的, ,但习惯上却不用冠词但习惯上却不用冠词, ,如如:space:space太空太空, , nature nature自然自然,man,man人类。人类。特别提示特别提示5.5.用于表示方位、西洋乐器等的名词前。如用于表示方位、西洋乐器等的名词前。如:in the east,in the :in the east,in the northwest,play the piano northwest,play the piano。6.6.用于序数词和形容词最高级前面。用于序数词和形容词最高级前面。 Yang Liwei is the

24、first man who has been into space in China. Yang Liwei is the first man who has been into space in China. 在中国杨利伟是第一个进入太空的人。在中国杨利伟是第一个进入太空的人。 This is the best film Ive ever seen.This is the best film Ive ever seen. 这是我看过的最好的电影。这是我看过的最好的电影。 当序数词不表示顺序而表示当序数词不表示顺序而表示“又一又一, ,再一再一”时时, ,用不定冠词。用不定冠词。如如:a se

25、cond time,:a second time,意为意为“再一次再一次; ;又一次又一次”。特别提示特别提示7.7.用于表示某世纪、年代、时期或朝代的名词前。用于表示某世纪、年代、时期或朝代的名词前。 It is not rare in the 1990s that people in their fifties are It is not rare in the 1990s that people in their fifties are going to university for further education. going to university for further e

26、ducation. 在在2020世纪世纪9090年代五十多岁的人上大学进修并不罕见。年代五十多岁的人上大学进修并不罕见。8.“8.“动词动词+sb.+sb.+介词介词+the+the+身体某一部位身体某一部位”结构中的结构中的thethe不可用物主代词代不可用物主代词代 替。替。take sb.by the armtake sb.by the arm抓某人的胳膊抓某人的胳膊hit sb.on the headhit sb.on the head砸在了某砸在了某 人的头上。人的头上。9.9.用在固定搭配中。如用在固定搭配中。如:by the way,in the distance,in the

27、morning,:by the way,in the distance,in the morning, in the end,in the direction of,on the whole,on the other hand, in the end,in the direction of,on the whole,on the other hand, the other day,to tell the truth,in the country,all the time,go the other day,to tell the truth,in the country,all the time

28、,go to the cinema,in the open air,on the radio,at the same time,at to the cinema,in the open air,on the radio,at the same time,at the moment the moment等。等。 考点三零冠词的用法考点三零冠词的用法1.1.专有名词、物质名词、抽象名词、人名、地名等名词前专有名词、物质名词、抽象名词、人名、地名等名词前, ,一般不加冠一般不加冠 词。如词。如:China,America,Smith:China,America,Smith。2.2.表示季节、月份、星

29、期和节日的名词前和学科、语言、三餐、球类运表示季节、月份、星期和节日的名词前和学科、语言、三餐、球类运 动、棋类游戏的名词前不用冠词。动、棋类游戏的名词前不用冠词。 January 1st is New Years Day.January 1st is New Years Day.一月一日是新年。一月一日是新年。 I like physics though its a bit difficult.I like physics though its a bit difficult. 尽管物理有点难尽管物理有点难, ,但是我喜欢它。但是我喜欢它。 I always have breakfast a

30、t home and lunch at school.I always have breakfast at home and lunch at school. 我总是在家里吃早饭我总是在家里吃早饭, ,在学校吃午饭。在学校吃午饭。 Some students will play basketball after school.Some students will play basketball after school. 有些学生放学以后打篮球。有些学生放学以后打篮球。表示语言的名词之后有表示语言的名词之后有languagelanguage时则要加定冠词时则要加定冠词, ,如如 the Eng

31、lish the English language language。如果表示季节的名词指具体某年的某个季节如果表示季节的名词指具体某年的某个季节, ,需加定冠词需加定冠词, ,如如 in the in the spring of the year 2012 spring of the year 2012。在中国的传统节日前用定冠词在中国的传统节日前用定冠词thethe。如。如:the Spring Festival:the Spring Festival。特别提示特别提示3.3.称呼语及表示独一无二的头衔、职务的名词作宾语补足语及同位语时称呼语及表示独一无二的头衔、职务的名词作宾语补足语及同

32、位语时, , 不加冠词。常用的名词有不加冠词。常用的名词有king,president,chairman,monitor,head king,president,chairman,monitor,head 等。等。 We made Jack monitor of our class.We made Jack monitor of our class. 我们选杰克当我们班的班长。我们选杰克当我们班的班长。4.4.在某些固定词组、习惯用语中在某些固定词组、习惯用语中, ,不用冠词。不用冠词。 (1)(1)相对应使用的词相对应使用的词, ,如如father and son,husband and w

33、ife,knife and father and son,husband and wife,knife and fork,sun and moon fork,sun and moon等。等。5.“5.“零冠词零冠词+ +单数名词单数名词+as/though+as/though+主语主语+ +谓语谓语+ +主句主句”, ,意为意为“虽然虽然/ /尽尽 管管但是但是。” Hero as he is,he has some shortcomings.Hero as he is,he has some shortcomings. 虽然他是英雄虽然他是英雄, ,但他也有一些缺点。但他也有一些缺点。6.6

34、.常用的固定词组辨析常用的固定词组辨析at table at table 就餐就餐at the tableat the table在桌子旁在桌子旁in hospital in hospital 住院住院in the hospital in the hospital 在医院在医院in front of in front of 在在的前面的前面( (外部外部) )in the front of in the front of 在在的前面的前面( (内部内部) )go to school go to school 上学上学go to the school go to the school 去学校去学

35、校in charge of.in charge of.负责负责in the charge of.in the charge of.由由负责负责out of question out of question 没问题没问题out of the question out of the question 不可能不可能真题链接真题链接1.But for tourists like me,pandas are its top 1.But for tourists like me,pandas are its top (attract).(attract).(2016(2016全国全国)2.The nurs

36、ery team switches him every few 2.The nursery team switches him every few (day) with his (day) with his sister so that while one is being bottle-fed. sister so that while one is being bottle-fed. (2016(2016全国全国)3.Some people think that the great Chinese scholar Confucius,3.Some people think that the

37、 great Chinese scholar Confucius,whowho lived from roughly 551 to 479 B.C.,influenced the lived from roughly 551 to 479 B.C.,influenced the 。 (develop)of chopsticks(develop)of chopsticks.(2016.(2016全国全国)答案及剖析答案及剖析: :1.attraction1.attraction句意句意: :但是对于像我一样的游客来说但是对于像我一样的游客来说, ,大熊猫是最大的吸引。形大熊猫是最大的吸引。形 容

38、词容词top“top“头等的头等的; ;最重要的最重要的”, ,后面跟名词形式。后面跟名词形式。2.days2.days句意句意: :护理团队每隔几天就把他和他的妹妹互换一下护理团队每隔几天就把他和他的妹妹互换一下, ,这样当他们中的这样当他们中的 一个在被人工喂养的时候一个在被人工喂养的时候。dayday为可数名词为可数名词, ,其前有其前有fewfew修饰修饰, ,故用复数故用复数 形式。形式。3.development3.development句意句意: :一些人认为大约生活于公元前一些人认为大约生活于公元前551551年到年到479479年间的中国伟年间的中国伟 大学者孔子影响了筷子的

39、发展。此处有大学者孔子影响了筷子的发展。此处有thethe修饰且作修饰且作influenceinfluence的宾语需用名的宾语需用名 词形式。词形式。4.4. prize for the winner of the competition is prize for the winner of the competition is . . two-week holiday in Paris two-week holiday in Paris.(2016.(2016浙江浙江, ,单项填空单项填空)5.The adobe dwellings(5.The adobe dwellings(土坯房土坯房

40、)built by the Pueblo Indians of the )built by the Pueblo Indians of the American Southwest are admired by even American Southwest are admired by even most modern of most modern of architects and engineers architects and engineers.(2015.(2015全国全国)答案及剖析答案及剖析: :4.The;a4.The;a句意句意: :这次比赛给获胜者的奖励是巴黎两周游。第一

41、个空格特这次比赛给获胜者的奖励是巴黎两周游。第一个空格特 指对比赛获胜者的奖励指对比赛获胜者的奖励, ,故用故用thethe。第二个空格泛指一次为期两周的假。第二个空格泛指一次为期两周的假 期期, ,用不定冠词用不定冠词a a。5.the5.the根据句意可知根据句意可知,“,“ most modern”most modern”表示最高级的含义表示最高级的含义, , 故填定冠词故填定冠词thethe。跟踪训练跟踪训练.单句语法填空单句语法填空1.He contacted University officials to tell about the 1.He contacted Universi

42、ty officials to tell about the . . (possible) of returning the book.(possible) of returning the book.2.More than 300 2.More than 300 (coach) have been invited to the (coach) have been invited to the meeting meeting.(2017.(2017江西新余江西新余)3.To make members of a team perform better,the trainer first of 3

43、.To make members of a team perform better,the trainer first of all has to know their all has to know their (strong) and weaknesses.(strong) and weaknesses.答案及剖析答案及剖析: :1.possibility1.possibility考查派生词的用法。此处作介词考查派生词的用法。此处作介词aboutabout的宾语的宾语, ,应用提应用提 示词的名词形式示词的名词形式possibilitypossibility意思是意思是“可能性可能性”。2

44、.coaches2.coaches考查名词的复数。考查名词的复数。coachcoach为可数名词为可数名词, ,前有前有more than 300,more than 300, 故此处用故此处用coachcoach的复数形式的复数形式coachescoaches。3.strengths3.strengths考查派生词的用法。考查派生词的用法。andand连接两个并列的名词作连接两个并列的名词作knowknow的宾的宾 语语, ,故此处填提示词的名词形式故此处填提示词的名词形式, ,注意此处需要用复数。注意此处需要用复数。strengths strengths and weaknesses an

45、d weaknesses意思是意思是“优点和缺点优点和缺点”。4.According to the news report,personal 4.According to the news report,personal (possess) of (possess) of guns in the USA causes a lot of trouble. guns in the USA causes a lot of trouble.5.There is a growing 5.There is a growing (tend) for people to work at home (tend)

46、 for people to work at home instead of in offices. instead of in offices.6.Rain falls in summer,and there was 6.Rain falls in summer,and there was heavy rain last heavy rain last night. night.答案及剖析答案及剖析: :4.possession4.possession考查派生词的用法。分析句子结构可知考查派生词的用法。分析句子结构可知, ,此处用名词作此处用名词作 主语主语, ,故此处用名词形式故此处用名词

47、形式possession,possession,意思是意思是“持有持有”。5.tendency5.tendency考查派生词的用法。本句为考查派生词的用法。本句为there bethere be句型句型, ,空格处需要名空格处需要名 词作主语词作主语, ,故此处填名词形式故此处填名词形式tendency,tendency,又根据空前的不定冠词又根据空前的不定冠词a,a,可知可知 应用单数形式。应用单数形式。6.a6.a考查冠词的用法。考查冠词的用法。a heavy raina heavy rain意思是意思是“一场大雨一场大雨”。7.As he approached the bridge,th

48、e sound got louder and then he 7.As he approached the bridge,the sound got louder and then he saw saw pitiful sightpitiful sight.(2017.(2017江西红色七校一联江西红色七校一联)8.Recently when he took 8.Recently when he took look at his collection of books,look at his collection of books, he discovered the old book bor

49、rowed 61 years ago. he discovered the old book borrowed 61 years ago.9.He devotes most of his time to football.And I am sure he 9.He devotes most of his time to football.And I am sure he promises to be promises to be excellent footballer.excellent footballer.10.Nowadays 10.Nowadays most popular mean

50、s of communication is to most popular means of communication is to send short messages by mobile phone. send short messages by mobile phone.答案及剖析答案及剖析: :7.a7.a考查冠词的用法。设空处后的名词考查冠词的用法。设空处后的名词sightsight作作“景象景象, ,情景情景”讲时讲时, ,为可数名为可数名 词词, ,在本句中表泛指在本句中表泛指, ,故与不定冠词连用。故与不定冠词连用。8.a8.a考查冠词的用法。句意考查冠词的用法。句意: :最

51、近最近, ,当他查看他的藏书时当他查看他的藏书时, ,他发现了那本他发现了那本6161年前年前 借的旧书。借的旧书。“take a look (at.)”take a look (at.)”为固定短语为固定短语, ,意为意为: :看一看。看一看。9.an9.an考查冠词的用法。根据句意可知考查冠词的用法。根据句意可知, ,此处表示此处表示“一名杰出的足球运动员一名杰出的足球运动员”, , 又又excellentexcellent为元音音素开头为元音音素开头, ,因此应该填不定冠词因此应该填不定冠词anan。10.the10.the考查冠词的用法。此处用在形容词最高级之前考查冠词的用法。此处用在

52、形容词最高级之前, ,应该填定冠词应该填定冠词thethe。.单句语法改错单句语法改错 ( (含非本专项及一句二错试题含非本专项及一句二错试题) )1.The airport bus leaves every 30 minute and will take you right 1.The airport bus leaves every 30 minute and will take you right to the Friendship Hotel. to the Friendship Hotel.2.He gave me all the encouragements I needed to

53、 be able to carry 2.He gave me all the encouragements I needed to be able to carry on on.(2017.(2017四川成都外国语学校模拟四川成都外国语学校模拟) )3.Some people from different part of the world have different 3.Some people from different part of the world have different values,so he is necessary to learn from each other.

54、 values,so he is necessary to learn from each other.答案及剖析答案及剖析: :1.minuteminutes1.minuteminutes句意句意: :机场班车每机场班车每3030分钟一趟分钟一趟, ,会将你直接带到友会将你直接带到友 谊宾馆。谊宾馆。minuteminute前面有数词前面有数词3030修饰修饰,minute,minute须用复数形式。须用复数形式。2.encouragementsencouragement2.encouragementsencouragement句意句意: :他给了我能继续下去所需要他给了我能继续下去所需要

55、的鼓励。的鼓励。encouragementencouragement是不可数名词是不可数名词, ,没有复数形式。没有复数形式。3.partparts3.partparts根据根据partpart前的修饰语前的修饰语different different 可知应用可知应用partpart的复数的复数 形式。形式。 heitheit根据句子意思可知根据句子意思可知, ,此处意为此处意为“相互学习是必要的相互学习是必要的”, ,须用须用it it is+adj.+to do. is+adj.+to do.的句型。的句型。 4.How are you?Today Ive got a wonderful news to tell you.4.How are you?Today Ive got a wonderful news to tell you.5.they only eat what they like and never touch food they 5.they only eat what they like and never touch food they dont like even if they really nee