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1、Unit4 Exploring plants,Warming up,Can you tell the name of the flower?,Tulip,Tulips are beautiful flowers and people often Send them to their friends as presents.,Sunflower,It comes from North America.Indians there began to grow them some 3000 years ago .,Peony,the Chinese national flower,Rose,Roses
2、 are best presents to be sent to friends. And it is also very popular to send roses as love signal between young people. Red roses indicate warmth and love and white ones, purity and simplicity, blue ones, honesty and sincerity.,Which is your favorite flower? Why?,Reading:,rose 玫瑰,tulip 郁金香,peony 牡丹
3、,sunflower 向日葵,Which flower is your favorite? Why?,rose,red roses indicate warmth and love white ones, purity（纯洁） and simplicity（朴实） blue ones, honesty and sincerity.,Joseph Banks,Daniel solander,Karl Linnaeus,Teacher,Student,lifelong friends,What happened in these years? Complete the sentences. 1 I
4、n l5OO BC, the Queen of Egypt sent ships to gather plants, animals and other goods. 2 In the 1740s, a French Catholic missionary called Father dIncarville was sent to Beijing. 3 In1751,some Tree of Heaven seeds arrived in England.,Comprehending,4 In1769,Sir Joseph Banks collected vast quantities of
5、plants in the land now known as Australia 5 In 1784, the Tree of Heaven was introduced into North America. 6 In 1833, Nathaniel Ward used two special cases that he had invented to ship British plants to Sydney,Australia.,7 Between 1843 and 1859, a British plant collector Robert Fortune. made several
6、 trips to China 8 During the second half of the nineteenth century, many Catholic missionaries were sent to China from France. 9 In 1897, a French Plant collector Father Farges. sent seeds of the Dover Tree from China to France. 10 In 1899, a Plant collector, E H Wilson. collected a large quantity o
7、f the seeds of the Dove Tree in China.,Grammar,1. Collecting “exotic” plants, as they are called, dates back to the earliest times. (Reading Para.1) 【解析】date back to从现在追溯到过去某时，相当于date from或go back to。 【考查方向】考查date back to短语作谓语的情况。因“追溯”是从现在算起指向过去，所以改动词的时态通常用一般现在时，没有被动语态。,【考题预测】His interest in stamp c
8、ollecting his school days. A. is dated from B. dates back to C. is dated back to D. dates 【点拨】date back to(date from)无被动形式，而date作动词表示“写上日期”，与句意不符，故选B。,2. Brave young men took the opportunity of going on botanical expeditions, often facing many dangers including disease, near-starvation, severe envir
9、onments and conflicts with the local people. (Reading Para.2) 【解析1】动词-ing短语often facing many dangers including disease, near-starvation, severe environments and conflicts with the local people作谓语took the opportunity的伴随状语。,【考查方向】非谓语动词的考测。现在分词短语作伴随状语，它同句子的主语构成逻辑上的主谓关系，并且和句子谓语动作几乎是同时发生。 【真题再现】We often
10、provide our children with toys, footballs or basketballs, _ that all children like these things. （全国卷III 2006） A. thinking B. think C. to think D. thought 【点拨】we和think构成逻辑上的主谓关系，而且动作thinking that同动作provide同时发生。故选A。,【解析2】conflict是名词，意为“冲突，斗争”，常构成短语有：in conflict有矛盾，有冲突；in conflict with和有矛盾，和不一致；bring
11、sb into conflict使某人与发生争执等等。 【考查方向】考试时会把conflict同argument（辩论）, negotiation（谈判）, bargain（契约，合同）, battle（战斗，战争）, campaign（战役，活动，运动）, struggle（竞争，奋斗）, contact（联系，接触）, connection（联接，关系）等名词放在一起辨析。,【真题再现】In dealing with public relations, we should make every effort to prevent the _ in personality. （上海2004）
12、 A. contact B. contrast C. connection D. conflict 【点拨】 contact “联系，接触，交际，交往”；contrast “对比，对照”；connection “联系，关系”；conflict“争论，冲突，抵触，斗争”。句意：在处理公共关系时，我们应努力防止价格冲突。故选D。,3. In 1769, Banks collected vast quantities of plants in the land now known as Australia. (Reading Para.4) 【解析1】quantity作名词，意为“量，数量，总量”，
13、 quantity前可用huge, good, great, large，small, vast等词语修饰。 【考查方向】“a large quantity of + 可数名词复数”作主语，相当于“a large number of + 可数名词复数”作主语，谓语用复数；“a large quantity of + 不可数名词”作主语，相当于“a large amount of + 不可数名词”作主语，谓语一般情况下用单数，但如果“quantities of+不可数名词”作主语，谓语用复数。,【真题再现】As a result of destroying the forests, a larg
14、e_ of desert _ covered the land. （2001年上海） A. number has B. quantityhas C. numberhave D. quantity have 【点拨】a large number of后面接复数名词，所以排除A和C；a large quantity后面跟的是desert，表示“沙漠”，用于不可数名次，所以排除D。句意为：破坏森林的结果是大片沙漠覆盖了陆地。选B。,【解析2】句中now known as Australia是过去分词短语作the land的后置定语，相当于定语从句which is now known as Austr
15、alia。be known as以著称。 【考查方向】考查非谓语动词作定语。以be known引出的短语有：be know as作为而出名；be known for因而出名；be known to为知道。,【真题再现】Linda worked for the Minnesota Manufacturing and Mining Company, _as 3M. （浙江2004） A. knowing B. known C. being known D. to be known 【点拨】过去分词短语作定语。故选B。,4. A British man called Robert Fortune w
16、as one of the earliest plant collectors to use Wardian cases. (Reading Para.7) 【解析】句中the earliest是形容词最高级作plant collectors的定语，动词不定式短语to use Wardian cases作collectors的后置定语。 【考查方向】当名词被形容词最高级或序数词(含last)等修饰时，其后接动词不定式作定语。,【真题再现】This company was the first _ portable radio as well as cassette tape recorders in the world. （上海2005春） A. producing B. to produce C. having produced D. produced 【点拨】the first后面省略了名词company，the fir
