1、 Unit2 知识要点知识要点1.频率副词：频率副词通常位于频率副词：频率副词通常位于实义动词实义动词之前之前,be动词或助动词之后动词或助动词之后。always（100%）“总是总是”,usually（80%）“通常通常”,often（60%）“经常经常”,sometimes（20%）“有时有时”,hardly（5%）“几乎不几乎不”,常和常和ever连用连用 hardly ever,“几乎不几乎不”表示强调。表示强调。never（100%）意为）意为“从未从未”。2.hardly只用作副词，其意思是只用作副词，其意思是“几乎几乎不不”，表示否定概念。，表示否定概念。hardly ever
2、几乎几乎从不从不 hard也用副词，意为也用副词，意为“努力地、努力地、“猛烈猛烈地地”。e.g.He works hard only before exams.3.once,twice,three times等次数的表达法。等次数的表达法。once是是_，twice是是_，除了一次，除了一次，两次，其他的次数都用两次，其他的次数都用_表达。如：三表达。如：三 次是次是_，五次是，五次是_。两。两 周一次周一次 _ 一年两次一年两次_一次一次两次两次timethree timesfive timesonce two weekstwice a year4.how often 意为意为“多久一次多
3、久一次”，是用于提问表，是用于提问表示示 “频率频率”的特殊疑问词组。的特殊疑问词组。其答语应为表其答语应为表 示示“频率频率”的副词或副词词组的副词或副词词组 翻译：翻译：你多久去游泳一次？你多久去游泳一次？一个星期三次。一个星期三次。How often do you go swimming?Three times a week.5.maybe意为意为“大概；或许；可能大概；或许；可能”，是副词，是副词，常常 位于句首或句中位于句首或句中。e.g.或许他们将去海滩度假。或许他们将去海滩度假。_ they are going to the beach for vacation.may be 是
4、情态动词是情态动词+动词原形动词原形be构成句子的谓构成句子的谓 语动词：语动词：“可能是可能是”，它们有时也可互换。它们有时也可互换。e.g.或许它们在你的书包里。或许它们在你的书包里。1)._ they are in your schoolbag.They _ _ in your schoolbag.2)._ _they will go outing.They _ _ outing.MaybeMaybemay be Maybemay go6.at least意为意为“至少，不少于；起码至少，不少于；起码”，是副词，是副词词组，一般指在数量或程度上。如：词组，一般指在数量或程度上。如：你必须
5、至少一周打扫你的房间一次。你必须至少一周打扫你的房间一次。You have to clean your house _ _ once a week.7.be good for 对对有好处有好处 e.g.Milk is good for our health.牛奶对我们的牛奶对我们的 健康有好处。健康有好处。be bad for 对对有坏处有坏处 e.g.Hot dog is bad for our health.热狗对我们热狗对我们 的健康有坏处。的健康有坏处。at least 8.We found that only fifteen percent of our students exerc
6、ise every day.percent是名词，意为是名词，意为“百分之百分之”，其结构为：其结构为：percent+of+the/my/our.+名词（代词）：名词（代词）：它当中它当中15%：同学中同学中80%：我们班里我们班里80%的学生每天都锻炼。的学生每天都锻炼。in our class exercise every day.Eighty percent of the students 15 percent of it 80%of the classmates9.And twenty percent do not exercise at all!not at all 意为意为“一点
7、也不一点也不”，not应和应和be动词、助动词或情态连用。动词、助动词或情态连用。e.g.The story interesting .那个故事一点也没有趣。那个故事一点也没有趣。They the vacation .他们根本不喜欢那次旅行。他们根本不喜欢那次旅行。isnt at all didnt enjoy at all 10.Although many students like to watch sports,game shows are the most popular.although 连词，连词，“尽管，虽然；即使尽管，虽然；即使”e.g.We went fishing alth
8、ough it was cold.。注意：注意：although引导的从句不能与引导的从句不能与but连用。连用。以下哪种表达是正确的？以下哪种表达是正确的？()Although he left home early,but he was late.()Although he left home early,he was late.选择填空：选择填空：My cousin knows a lot about geography,_ he is only four。A.because B.So C.although vC11.the best way to relax is through exe
9、rcise.through 介词，课文中意为介词，课文中意为“以，凭借以，凭借”e.g.He found the job in the newspaper.(通过报纸上的一个广告通过报纸上的一个广告)through 还有还有“穿过穿过”之意。常和动词连之意。常和动词连用表示用表示“从从内部穿过内部穿过”：walk/go through e.g.They the forest yesterday.昨天他们穿过了森林。昨天他们穿过了森林。through an advertisement went through 12.So start exercising before its too late!
10、its too late 为时太晚；来不及了为时太晚；来不及了 before its too late是由是由 before引导的时间状引导的时间状语从句语从句before表示表示“”。e.g.You should work harder its too late to catch up.你应当更加用功，别等到为时过晚而赶不上你应当更加用功，别等到为时过晚而赶不上了。（你现在用功还赶得上。）了。（你现在用功还赶得上。）未及未及before13.I wonder what life was like here in the past.We found that only fifteen perc
11、ent of our students exercise every day.But we were surprised that ninety percent of them use the Internet every day.以上几个句子的宾语皆为一个句子（划线部分）。以上几个句子的宾语皆为一个句子（划线部分）。若用一个句子充当宾语，该句子在语法上称若用一个句子充当宾语，该句子在语法上称为宾语从句。为宾语从句。宾语从句要用陈述语序宾语从句要用陈述语序。若该。若该句子是句子是陈述句，则用陈述句，则用that连接，连接，若该句子是若该句子是特殊疑问句，则把疑问词改为连接词，再把特殊疑问句，则
12、把疑问词改为连接词，再把剩余部分改为陈述语序，放在连接词之后。剩余部分改为陈述语序，放在连接词之后。试把以下句子连成宾语从句：试把以下句子连成宾语从句：1.How can she say so?I wonder I wonder .2.Why didnt you come to school yesterday?Can you tell me can you tell me .3.Where will they go camping?Do you know？Do you know .4.she will go outing.She tells me She tells me .构词：构词：ha
13、rd-.adv.hardly write-.n.writer how she can say so.why you didnt come to school yesterday where they will go campingthat she will go outing短语：短语：once a week一周一次一周一次 twice a month一月两次一月两次 once two weeks 两月一次两月一次 three to five times a year 一年三到五次一年三到五次 be free空闲的空闲的 be free from远离远离打扰打扰 free time activ
14、ities自由活动自由活动 game show综艺节目综艺节目 less than少于少于 How come?怎么会呢？怎么会呢？hardly ever几乎不曾几乎不曾 at least 至少至少 be busy doing sth 忙于做忙于做 be busy with sth 忙于忙于 How often多久一次多久一次 use the Internet使用电脑使用电脑 use of the Internet电脑的使用电脑的使用 in ones free time在在的空余时间的空余时间 一周一次一周一次 the other别的别的 for fun娱乐娱乐 the answer to的答案
15、的答案 go to the dentist 看牙医看牙医 ask sb about sth 问问关于关于 be afraid of doing sth 害怕做害怕做 help with housework帮着做家务帮着做家务 learn about 了解了解 Dont worry(about)别担心别担心 on weekends在周末在周末 be full for sb.某人很忙某人很忙 dance and piano lessons舞蹈和钢琴舞蹈和钢琴课课 stay up late熬夜很迟熬夜很迟 want sb.to do sth.想某人做某事想某人做某事 go camping去宿营去宿营
16、 fifteen percent of 15%的的 notat all 根本不，完全不根本不，完全不 一周一次一周一次 Its adj.to v.by doing sth.通过做某事做通过做某事做如何如何 spend time with和和度过度过 the best way to v 做某事的最好方法做某事的最好方法 most students大多数学生大多数学生 a 16-year-old high school student 一个一个16岁的高中生岁的高中生 teeth cleaning 涮牙涮牙句型：句型：1.We found that only fifteen percent of
17、our students exercise every day.2.But we were surprised that ninety percent of them use the Internet every day.3.The other ten percent use it at least three or four times a day.4.The answers to our questions about watching TV were also interesting.5.Although many students like to watch sports,game s
18、hows are the most popular.6.Its good to relax by using the Internet or watching game shows,but we think the best way to relax is through exercise.7.Its healthy for the mind and the body.8.Old habits die hard.9.So start exercising before its too late!10.Youre smart about health most of the time.11.You have to learn more about healthy habits.
