选择性必修 第一册Unit 5 Revealing nature课前预习ppt课件

这是一份选择性必修 第一册Unit 5 Revealing nature课前预习ppt课件，共30页。PPT课件主要包含了buried，into等内容，欢迎下载使用。

本单元要求写一篇观察日记，属于说明文。观察日记就是把生活中看到的、听到的、做过的、想到的等记录下来， 经过整理写成的书面材料。观察日记要明确体现观察的目的、步骤和结果，对观察到的现象的描述要客观准确，语言要简洁质朴、通俗易懂。写作过程中要注意：
课时学案 写作(Writing)
1．写作顺序。要特别讲究文章的层次和条理，能反映客观事物本身的逻辑顺序。2．说明方法。可采用叙述、比较、对比分析等方式来描述。不需要发表主张，抒发个人情感。3．人称时态。这种文体通常用第二人称，时态以一般现在时为主。
(一)基本框架1．开头：描写这种植物是怎样种植的。2．主体：描写这种植物适合在何种环境中生长。3．结尾：描写这种植物长成了什么样子。
(二)常用表达1．The whle bdy f the cactus is green．这个仙人掌全身都是绿的。2．I really want t knw hw the garlic grws up in the sil．我真想知道大蒜是怎么在泥土里生长的。3．Althugh bamb is really a kind f grass, it lks mre like a tree．虽然竹子实际上是一种草，但它看起来更像一棵树。
4．Bamb grws best in places where it is warm and rains ften．竹子在温暖多雨的地方长得最好。5．The abve is the green garlic blt, the fllwing white, like a lng green nin．蒜苗的上面是绿色的，下面是白色的，长得很像葱。6．The cactuses have lng rts and they take their rts deep int the earth s that they can get the water frm deeper sil．仙人掌的根很长，它们把根深深地扎入土壤中，以便从较深的土壤中获得水分。
7．Sunflwers ften have flwers facing the sun and grw well．向日葵的花常朝着太阳，且生长良好。8．With enugh sil and sunshine, it will grw faster and better．有了足够的土壤和阳光，它会生长得更快更好。
假如你是李华，想研究一下向日葵从种子到植株的生长过程。请根据下面的提示写一篇观察日记。1．你把向日葵种子埋进了一个盆子的土里，浇了些水；2．几天后，盆子中长出了嫩苗；你把盆子放在屋里，避免阳光暴晒；3．嫩苗在茁壮地成长，几天后长得很高了；4．你对于它的生长很是惊讶。
注意：1．词数80左右；2．可以适当增加细节，以使行文连贯。___________________________________________________________________________________________________________________
[审题构思]　写作要求是写向日葵从种子到植株的生长过程。写作时应注意下面几点：1．确定体裁：本文为一篇日记，属于应用文；2．确定人称：本文的主要人称应为第一人称；3．确定时态：本文的主体时态为一般过去时。4．确定内容：①介绍自己要观察记录的内容及目的；②介绍向日葵的发芽及生长过程；③表达自己的感受。
[遣词造句]1．一天，我把一些向日葵种子埋进一个盆子里，那里面有肥沃的泥土。One day, I ______ sme seeds f sunflwers ____ a basin，and there was sme rich sil in the basin．2．在倒入一些水之后，我开始以极大的耐心来观察它们。After I _________________________，I began t bserve them with great patience．
pured sme water int it
3．几天后，一些向日葵开始破土发芽。Several days later，sme sunflwers ________________．4．它们非常可爱。And they were ______________．5．我把盆子搬进室内，以防幼苗被炎热的太阳晒伤。I _____________________________ t prevent these yung plants frm being burnt by the ht sun．
began t cme up
s/very lvely
mved the basin int the rm
6．土有一些干了，我又加了些水。_________________________，s I added sme water t it again．7．几天后，幼苗长得又高又壮。After several days，the yung plants ____________________．8．看着一粒种子长成一棵高大的植物是多么令人惊奇啊！Hw amazing it is ________________________________ ！
The sil was a little dry
grew tall and strng
t watch a seed becme a tall plant
[句式升级]1．用定语从句改写句1______________________________________________________________________________________________________________________2．用动词-ing形式短语改写句2______________________________________________________________________________________________________________________3．用感叹句改写句4___________________________________________________________
One day, I buried sme seeds f sunflwers int a basin，where there was sme rich sil．
After puring sme water int it，I began t bserve them with great patience．
Hw lvely they were!
[连句成篇](注意使用适当的衔接过渡词语)________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
[参考范文]One day，I buried sme seeds f sunflwers int a basin，where there was sme rich sil．After puring sme water int it，I began t bserve them with great patience．Several days later，sme sunflwers began t cme up．Hw lvely they were! I mved the basin int the rm t prevent these yung plants frm being burnt by the ht sun．Hwever, the sil was a little dry，s I added sme water t it again．After several days，the yung plants grew tall and strng．Hw amazing it is t watch a seed becme a tall plant!
1．hld ut ne's hand 伸出手2．shrug ne's shulders耸耸肩3．spread ne's hands 摊开双手4．stand n ne's tipte踮起脚尖5．get dwn n ne knee 单膝跪地
6．lk ver ne's shulder 回头看7．with trembling hands 用颤抖的双手8．struggle t ne's feet 挣扎着站起来9．stamp ne's ft impatiently 不耐烦地跺着脚10．raise a warning finger 举起一根手指以示警告
[佳句积累]1．She jumped t her feet when she heard the news．当她听到这个消息时，她跳了起来。2．With a finger raised t his lips, the teacher asked fr silence．老师把一根手指举到唇边，要求肃静。3．She felt exhausted, s she sat by the stream, resting her aching feet．她感到精疲力竭，于是坐在小溪旁，让自己疼痛的双脚休息一下。
4．With a sinking heart, he dragged his heavy legs back hme, tired ut．他垂头丧气，拖着两条沉重的腿，疲惫不堪地回到了家。5．At first, she planted her feet firmly t the grund and refused t mve．一开始她双脚钉在地上，不肯动。6．She pulled ff her shes and dashed int her bedrm, bareft and fast．她脱下鞋子，光着脚飞快地跑到自己卧室中。
7．I reached dwn and cupped the butterfly in my hands as gently as I culd．我俯下身，尽可能轻柔地将蝴蝶捧在手心。8．He slid t the windw f the hut, raised himself n tipte, and stle a glance．他溜到小屋的窗口，踮起脚尖，偷偷看了一眼。
9．My arms aching and knees trembling, I crawled ut f the cave and shuted fr help．手臂疼痛，膝盖发抖，我爬出了洞，大喊救命。10．Standing n the bridge, the tw held each thers' hand tightly, with tears in their eyes．两人站在桥上，紧握着彼此的手，眼里含着泪水。
阅读下面材料， 根据其内容和所给段落开头语续写两段， 使之构成一篇完整的短文。Mney Culdn't Buy EverythingFifteen years ag, I was brn int a big family．I had been taught that mney culdn't buy everything ever since I was a little kid．My parents are the mst hard-wrking peple I have ever seen．As much as my parents tried t teach me these values, sme culd nly be learned thrugh persnal experiences．
As a child, I wuld sit in the church trying t cncentrate n the wrds f the priest, but my attentin was sn attracted by the shining gld and the diamnds wrn by the Saturday churchgers．As my eyes began t wander, I nticed men dressed in their tailred suits and shirts with wmen in their designer dresses．
My family, n the ther hand, was the ppsite f rich．Our clthes had been washed s many times that the clurs had becme dull and lifeless．Althugh this shwed the mney struggles f ur large family, ur faces were always washed and hair neatly cmbed．When sitting n the ld big red and white truck after the service, I pictured the lives led by thse driving their brand-new cars, wishing I wuld be ne f them．
I never stpped thse daydreams, even when I was in middle schl．Since it was a private schl, mst f the children came frm wealthy families．Althugh I culd hide my lack f wealth at schl by wearing ur schl unifrms, my situatin was embarrassingly bvius n weekends with my classmates wearing designer jeans and I had n chice but t wear my sisters' ld jeans．I never fitted in with my classmates．T my relief, there was nly ne girl named Julie wh pened her heart t me．I was attached t her．Sn, her birthday was appraching．Julie invited me t attend her birthday party．
注意：1．续写词数应为150左右；2．请按如下格式作答。Hwever, I grew upset as I culdn't affrd a gift．___________________________________________________________________________________________________________________________________________________________________________________________
When she pened the gift bx, my heart was t nervus t beat．__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
[参考范文]Hwever, I grew upset as I culdn't affrd a gift． It wuld be such an embarrassing scene t be present withut a gift．I even thught abut quitting, but I was nt able t bring it frth．I struggled fr days but culdn't figure ut any slutin．One day, while helping with my hard-wrking parents with the husewrk, it suddenly ccurred t me that maybe I culd make a gift by myself．I immediately started my DIY prject, which ended up with a ty dll．The big day finally came．I arrived at her huse and handed her the bx．