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1、Section Discovering Useful Structures & Listening and Talking基础知识 预习自检.重点词汇1deer n. 鹿deer n. (pl.) 鹿2kangaroo n. 袋鼠kangaroos n. (pl.) 袋鼠3net n. 网Internet n. 互联网4neighbour n. 邻居neighbourhood n. 临近的地方；街区5due_to 由于；因为6bird_field_guide 鸟类图鉴7search_for 搜索；查找8paper_cutouts 剪纸.教材原句1African elephants _ (正在被
2、猎杀)答案：are being hunted2What part of the city _ (正在被攻击) now?答案：is being attacked3Living spaces for wildlife _ (正在被减少) due to the cutting of trees.答案：are being reduced4Fish and snakes _ (正在被杀死) for food in restaurants.答案：are being killed5The wetland _ (正在被污染) seriously every day.答案：is being polluted6I
3、ve bought a _ (野外指南) so that we can look up the birds we see.答案：field guide7I often see wild cats _ (在我们附近)答案：in our neighbourhood8Put paper cutouts on windows _ (以便) birds do not crash into it.答案：so that9Build _ (野鸟喂食器) to make sure that birds have enough food.答案：bird feeders10Should we put out _ (
4、几碗食物) for them?答案：bowls of food重点知识 合作探究1reduce vt. 减少(教材P18)归纳拓展reduce to 使降低到；遭受reduce by 降低了reduce sth. from sth. to sth. 把从减少到reduce price 降价；削价；减价reduce sth. to sth. 将概括成(或简化为) Costs have_been_reduced_by 20% over the past year.过去一年，各项费用已经减少了20%。The skirt was_reduced_to 10 in the sales.在大减价期间，这条
5、裙子减价到10英镑。The number of employees was_reduced_from_40_to_25.雇员人数从40人减少到了25人。We can reduce the problem to two main issues.我们可以将这个问题概括成两个要点。(1)单句语法填空The temperature is 36 degrees, but it will be reduced _ 20 degrees in the night. He weighed 75 kilos last month, and now his weight has been reduced _ 10
6、 kilos.答案：toby(2)单句写作职工人数从13,000人减少到了7,500人。The workforce was reduced _ 13,000 _ 7,500.答案：from; to2due to 由于；因为(教材P18)归纳拓展表示“因为，由于”的其他短语有：(1)because of比其他短语更口语化；其构成的短语通常作状语，一般不作表语。(2)thanks to “幸亏，多亏”。通常用于好的方面，但有时用作反语，由其构成的短语可置于句首或句末。(3)owing to构成的介词短语可以作状语或表语，作状语时，习惯上用逗号和句子的其他部分隔开。Eventually, his s
7、cholarship was not approved due_to various reasons.由于各种原因，他的奖学金最终没有被批准。Your headache is due_to stress.你的头痛是由压力造成的。Because_of/Owing_to the snow, the pilot had to land the plane at another airport.由于下雪，飞行员只得把飞机降落到另一个机场。Thanks_to your help, we were successful.由于你的帮助，我们得以成功。名师点津due to， because of， owing
8、 to和thanks to都可以作状语；due to， owing to可以作表语；due to还可以作定语。单句语法填空I was late for work this morning due _ the bad traffic. Thanks _ his parents encouragement and support, he finally realized his dream.It was very difficult to see our way because _ the fog. 答案：totoof 3search for 搜索；查找(教材P19)归纳拓展search sb.
9、搜某人的身 search . for sth. 搜查(某人/某地)以寻找某物in search of 寻找；搜寻in the/ones search for . 在寻找中They searched_for a spot where they could sit on the floor.他们在地板上寻找一处能够坐下的地方。Firefighters searched the buildings for survivors.消防队员在建筑物中搜寻幸存者。He asked this question in three different ways in_search_of an answer. 为了
10、寻求答案，他以3种不同方式提出了这个问题。Egypt has said there is no time to lose in_the_search_for a Middle East settlement.埃及称寻求中东和解刻不容缓。(1)单句语法填空They searched the woods _ the little boy. She went into the kitchen in search _ a drink.Air photos are widely used in _ search for petroleum.答案：forofthe(2)单句写作科学家仍在寻求治疗感冒的方法
11、。Scientists are still _ a cure to the common cold.答案：searching forGrammar现在进行时的被动语态单句语法填空1What _ (discuss) now?答案：is being discussed2It is reported that these birds _ (protect) at present in the area.答案：are being protected3The plan _ (not carry) out well at present.答案：is not being carried4_ the hous
12、e _ (decorate) now?答案：Is; being decorated5The rivers and lakes in this area _ (pollute) by this factory now.答案：are being polluted6How many buildings _ (build) in the town?答案：are being built(一)构成肯定形式主语am/is/arebeingdone否定形式主语am/is/arenotbeingdone一般疑问式Am/Is/Are主语beingdone .？特殊疑问式特殊疑问词am/is/are主语beingd
13、one .？(二)用法1表示说话时正在进行的被动动作。句中常用now, at the moment, at present等时间状语。An interesting experiment is_being_carried_out now.现在，一项有趣的实验正在进行。Some young people are_being_interviewed in that room at present.一些年轻人现在正在那个房间里接受面试。2表示现阶段正在进行的被动动作，说话时不一定在进行。The film is_being_shown in the small villages these days.
14、这部影片这些天正在这几个小村子里放映。(2018天津高考)My washing machine is_being_repaired this week, so I have to wash my clothes by hand.我的洗衣机这星期正在被修理，所以我得用手洗衣服。3表示一种经常性的被动行为，常和always, constantly, frequently等表示频度的副词连用，这种用法常常带有赞扬或厌恶等感情。He is_always_being_praised by the leader.他总是受到领导的表扬。The windows of our classroom are_frequently_being broken.我们教室的窗户经常被打破。名师点津现在进行时的被动语态的注意事项(1)在现在进行时的被动语态中，am/is/are为第一助动词，
