资源描述
Unit 41.To learn the prefix and suffix.2.To learn howto use words to finish a passage.3.To remember the words.presentpresenceviolentconfidentdifferentpatientcertainfairpaidlikekindviolence confidencedifferencepatienceunkinduncertainunfairunpaidunlikecultureglobeuniverseagriculturemathematicsartphysicschemistrybiologysciencemathematicalculturalglobaluniversalagriculturalscientistArtistphysicistchemistbiologistAnswer key for exercise 1 on page 281.At the beginning,the earth had no_.A dust B atoms C water D matter2.The development of a planet generally depends on _ combining together.A atoms B rocks C gases D water3.The _ of mammals happened after the disappearance of the dinosaurs.A harmful B system C spread D method4.Mammals _ when the animals that were harmful to them disappeared.A prevented B multiplied C depended D existedAnswer key for exercise 2 on page 28CACBAnswer key for exercise 3 on page 28Is the moon a planet?This question is _ if students are to show that they understand the nature of _.Some scientists think that the earth _ the moon because the moon circles our planet.Others believe that the moon _ before the earth was formed.They think that earlier in time it travelled through space as a small planet which was caught by the earths gravity._,it goes around our planet.fundamental astronomygave birth to existedAs a result The evidence for this theory is that the _ that make up the rocks on the moon seem to be different from those on earth.What is clear is that the moon is smaller than the earth and this _ it _ escaping from the earth.Although its origin may still be a _,the moon can never be anything more than a satellite of the earth.atomspreventsfrompuzzleEmotional wordsCalm words Violent angry rude Shocked excited crazy Patient gentle relaxingKind easy-going calmAnswer key for exercise 4 on page 28Violent patient gentle angry rude relaxing kind shocked excited easy-going calm crazyNoun clauses asNoun clauses as the subjectthe subjectUnit 4 Grammar1._ watch was lost is unknown.2._ you did is right.3._ we will go for an outing tomorrow remains unknown.4._ we need is time.5._ will be our monitor hasnt been decided yet.whether what who whose whateverUse the words below to fill in the blanks.WhetherWhatWhateverWhoseWho上面的空大家都填对了吗上面的空大家都填对了吗?上面每个句子都出现了的上面每个句子都出现了的主主语从句语从句，大家能找到吗？，大家能找到吗？1.Whose watch was lost is unknown.2.Whatever you did is right.3.Whether we will go for an outing tomorrow remains unknown.4.What we need is time.5.Who will be our monitor hasnt been decided yet.1.Whose watch was lost is unknown.2.Whatever you did is right.3.Whether we will go for an outing tomorrow remains unknown.4.What we need is time.5.Who will be our monitor hasnt been decided yet.主语从句主语从句 (Subject Clause)如果一个句子在复合句中充当一个主语如果一个句子在复合句中充当一个主语,那么这个句子就是那么这个句子就是主语从句主语从句。That he finished writing the composition in such a short time surprised us all.What we need are good doctors.Whom we must study for is a question of great importance.连接词连接词1.that That the earth moves around the sun is well known.2.whether Whether he will come or not is not known yet.3.who Who will be sent there has not been decided.4.what What you need is more practice.5.which Which one is the best is not clear.6.when,where Where he has gone is a question.7.why,how Why there is gravity is hard to understand.How he can earn a living in Britain remains a big problem.8.whoever、whatever、whichever可引可引 导主语从句。导主语从句。Whoever comes will be welcome.Whatever he did was right.Whichever of you comes in will receive a prize.引导主语从句连词有引导主语从句连词有that,whether,who,what,whatever等。等。2.连词位于句首不能省略。连词位于句首不能省略。3.主语从句大多数情况下视为第三主语从句大多数情况下视为第三 人称单数人称单数,但在关系代词但在关系代词what引导引导 的主语从句后谓语动词的数要根的主语从句后谓语动词的数要根 据句意而定。据句意而定。小结小结为了防止句子头重脚轻，通常把形式为了防止句子头重脚轻，通常把形式主语主语it 放在主语位置，真正主语后置。放在主语位置，真正主语后置。1.It is certain that he will win the match.2.It is true that he has made a very important discovery in chemistry.3.It is very likely that they will hold a meeting.4.It is strange that the man should have stuck to his silly ideas.5.It is a pity that we wont be able to go to the south to spend our summer vacation.6.It is still a mystery what caused the accident.7.It is said that he has gone to Shanghai.8.It seems that he has seen the film.以以that 引出的主语从句引出的主语从句,常以形式常以形式 主语主语it引导引导,结构为结构为:It is+形容词形容词/名词名词/某些动词某些动词ed+that 从句。从句。2.在有些在有些that从句中要用虚拟语气从句中要用虚拟语气 (should+do/should+have done)。小结小结whether与与if均为均为“是否是否”但下列情况下只用但下列情况下只用whether：1.引导主语从句并在句首引导主语从句并在句首 Whether he will come is not clear.2.引导表语从句引导表语从句 The question is whether hell come.3.whether从句作介词宾语从句作介词宾语 Im not sure about whether well win.4.引导让步状语从句时引导让步状语从句时 Whether you like it or not,youll have to do it.1.主语从句位于句首时必须由连接词主语从句位于句首时必须由连接词 引导。引导。2.主语从句后置时引导词主语从句后置时引导词that可省略。可省略。3.主语从句位于句首时主语从句位于句首时,不能用不能用if 引导。引导。4.主语从句后置时主语从句后置时,可以用可以用if引导。引导。注意事项注意事项 用于用于It is important/natural/necessary/impossible that.句型句型中中,主语从句应使用主语从句应使用虚拟语气虚拟语气,谓语谓语动词用动词用“should+动词原形动词原形”的形式的形式,should有时有感情色彩。有时有感情色彩。1.Where shall we spend the holiday isnt decided.2.Your have made a mistake is a fact.3.That is certain that we can win.4.No matter who leaves the room last ought to turn off the lights.5.It is important that a student learns a foreign language.we shallThat you haveIt isWhoevershould learn改错练习改错练习 1._makes this shop different is that it offers more personal services.A.What B.Who C.Whatever D.Whoever 2.These wild flowers are so special I would do_ I can to save them.A.whatever B.that C.which D.whichever3._in the regulations that you should not tell people the passport of your e-mail account.A.What it required B.What requires C.It is required D.It requires4.It is pretty well understood _ controls the flow of carbon dioxide in and out of the atmosphere today.A.that B.when C.what D.how5._ made the school proud was _ more than 90%of the students had been admitted to key universities.A.What;because B.What;that C.That;what D.That;because6.It now appears _ they are in need of help.A.that B.which C.what D.how7._ knows the truth will tell you about it.A.Who that B.Whoever C.Whom that D.That who8.It is good news _ they will arrive in a few days.A.which B.what C.that D.how 他出生在何地还不知道。他出生在何地还不知道。2.谁会赢得比赛还不知道。谁会赢得比赛还不知道。3.谁来都欢迎。谁来都欢迎。4.那个人为什么被谋杀尚不知道。那个人为什么被谋杀尚不知道。Where he was born has not been found.Why the person was murdered is still unknown.Who will win the match is still unknown.Whoever comes is welcome.His discovery has not yet been proved.What _.Do the other astronomers accept his ideas?It remains a question.Whether _.The first appearance of life on earth is still a mystery to scientists.How _.has not yet been proved is his discovery other astronomers accepts his ideas remains a questionlife first appeared on earth is still a mystery to scientistsWhy is the earth becoming warmer?It is an important topic for research.Why _.Stephen Hawking at 65 experienced zero gravity during a flight.It amazed everybody.It amazed everybody _.Pluto is no longer considered a planet in our solar system.What a surprise!It is a surprise _.that Stephan Hawking at 65 experienced zero gravity during a flight.that Pluto is no longer considered a planet in our solar system the earth is becoming warmer is an important topic for researchAnswer key for exercise 3 on page 29143526HomeworkRead the text after class.Finish the exercises in the paper.
展开阅读全文