eylook,live,andeat.Theyhavedifferentshapes,sizes,colors,fins,teeth,habitats,diets,personalities,methodsofreproduction,andothercharacters-Sometypesofsharksareveryrare(likethegreatwhitesharksandthemegamouthsharks)mon(likethedogfishsharksandbullsharks).【写作指导】要写好说明文类文章的概耍,主耍需把握好以下几点:(1)本文介绍和说明的核心事物是什么?(2)该事物的主要特征是怎样的?(3)该事物的用途有哪些等。就木文而言,其概要框架应该是:第一段引岀木文介绍的主要事物——鲨鱼;第二至五段从四个方面介绍鲨鱼的主要特征:骨架、尺寸、体形、种类等。本文属于总分结构,因此学生应注意在概要中也要体现这一结构特点,各要点间可用过渡衔接词和连接词将其串联起来,以使概要连贯、有条理。【参考范文】Accordingtothepassage,wecanlearnthatsharksareamazingfishlivingintheworld•(要点1)Sharkshavenorealhardbonesbutcartilage,andtherearedifferentspeciesofsharksofdifferentsizes,allofwhichcanflyeasilythroughthewater•(要点2)Besides,sharkshavevariousbodyshapes•(要点3)Inalbabout368differentspeciesofsharksliveinwaterssometypesofwhichareveryrare.(要点4)
全文预览
