比较状语从句

DegreesofComparison,比较状语从句,比较状语从句是表示比较、比例、类比等的句子。其主要句子结构如下：,a.主语+谓语+as+形容词/副词+as+被比对象,这个句型叫等比句结构，表示两个人和事物在性质、特征等方面相似或相等，即相等的比较。被比对象可能是从句中的主语，也可能是宾语或其他成分。两个as，作用不同，前一个as是副词，在主句中说明所比较内容的程度，后一个as是连词，含有“比”、“如同”的意思，它所引导的从句通常是省略形式。,Physicsisasimportantasmathematics(is).Youseemtoknowmusicaswellasyouknowastronomy.Takeasmuchasyouwant.Isitasdifficultastheysayitis?Wehaveaccomplishedasmuchinthepastthreeyearsaswouldhavetakentenyearsinthepast.,表示两个人或事物在性质、特征等方面的不相似或不相同时，就用“主语+谓语+notso/as+形容词/副词+(名词)+as+被比对象”这个句型。,Youarenotsooldasyoulook.Therewasnogardensolovelyashisinthiscity.Itisntascoldasitwasyesterday.Nopersoniseithersohappyorsounhappyasheimagines.Finallyhehasmadeasmuchmoneyashewanted.,有时as好象是从句的主语，其实是从句的主语省略了。,Therewerenotsomanyticketsavailableaswereaskedfor.Youseemedtounderstandhumannatureaswellasdoscience.,比较句的肯定形式还有thesameas,suchas；否定形式还有notthesameas,notsuchas。,Yournameisthesameasyourfathers.Herdresswasthesamecolorasmine.Yourwatchisnotthesameashis.Inevermetsuchamanasyouryoungerbrother.,b.主语+谓语+形容词/副词比较级+than+被比对象,在这种结构中，than是个连词，引导比较状语从句，如果被比较的对象为名词或代词，一般采用省略形式，省去与主句中相同的部分。,Thisriverislongerthanthatone.Heisyoungerthanshe.LessonOneismoreinterestingthanLessonTwo.Shestudiesmorediligentlythanherclassmates.,Hedrivesfasterandmoredangerouslythanyou.ThistestislesssimplethanIexpectedittobe.Lightdoesnottravelatthesamespeedthroughallmaterials;itgoesslowerthroughsomethanthroughothers.,有时，连词than后直接跟从句的谓语，这时我们可以把它看成是省略了某些词语。,Thereweremorecasualtiesthanwasreported.(=thanitwasreportedtherewere)Sheplayedthepianomuchbetterthancouldhavebeenexpected.,在这种结构中，有时比较对象需要根据上下文内容进行判断；有时对象含蓄在主句中，这时后面往往是一个表示时间或条件的修饰语。,Takingthismedicinehelpstorelievehisheadache,andmakeshimlessill-temperedthanbefore.Theeffectsoftemperaturevariationsinintegratedcircuitsaremoreuniformthanifseparatecomponentsareused.,than引导的从句有时可放句首。Thanhenoonecouldshowafriendlierattitudetoyou.,在一定上下文中，从句还可以省略。Yououghttocomehereearlier.,c.主语+谓语+形容词/副词最高级+（名词）+范围,在这个句子结构中，形容词最高级的前面要加定冠词the。副词最高级的前面可加the可不加。形容词最高级后面可跟名词，而副词后面却不能跟名词，它只能修饰动词。比较范围一般是短语或从句。,ThiscoatisthemostexpensivethatIveeverbought.Sheisthemostactivegirlinourclass.Heworkedhardestintheworkshop.Sheboughttheleastexpensivetowelsthatshecouldfind.,最高级还可以用下列结构表示：,否定词语+比较级Ihaveneverseenatallerbuilding.Nootherbookhashadagreaterinfluenceonmylife.,否定词语+so+形容词/副词+as+比较对象ThereisnothingIlikesomuchastravelingabroad.Hehasneverbeensohappyasheistoday.,morethananyotherSheismorebeautifulthananyothergirlintheschool.Thisteacherexplainedtheproblemmoreclearlythananyotherteacher.,asasanyHerunsasfastasanyotherstudentintheclass.Thisriverisaslongasanyotherintheworld.,d.the+比较级，the+比较级,这是表示比例的句型，意思是“越，就越”。后面跟的是形容词或副词的比较级。通常，前面为条件从句，后面为结果主句。,Themoreticketsyousell,themoremoneyyouwillget.Thesmallerthecomputeris,thefasteritcanwork.Themorehethought,theangrierhegrew.,有时主句在前，从句在后：Anobjectdrawstheharder,themorematteritcontains.(物体含有的物质越多，它的引力就越大。)Otherswillsuspectusthemore,themorewesuspectthem.,这种句型常用省略句。Themore,thebetter.Thesooner,theworse.Thesmallerthemind,thegreatertheconceit.,主句的主谓有时半倒装，以保持句子的平衡。Themoreyouread,thebetterwillyouwrite.Thesmallertheparticles(分子)are,themorefreelydotheymove.,e.类比句，表示两类事物的相同或相似关系，通常用连词或引导从句。其主要句型结构有：,1.AistoBwhat/asCistoD.Readingistothemindwhatexerciseistothebody.Manureistocropsasfoodistoman.,2.AdoesforBwhatCdoesforD.Leavesdoforplantswhatlungs