【正文】 tage of the hotel‘s facilities. He takes advantage of her kindness and borrow money too often. I should like to take advantage of this opportunity to express my thanks for your help. 拓展 : have the advantage of 有 … 的優(yōu)點 to one‘s advantage 對某人有利 at a disadvantage 處于不利位置 to one‘s disadvantage 對某人不利 Paragraph Five: 1. thus: adv. ―因此 。 撰稿 , 投稿 Everyone should contribute what she or he can afford. His work has contributed to our understanding of this difficult subject. contribute sth to 投稿 She has contributed several poems to literary magazines. contribute to 增加某事物 , 添加到某事 物中 。 2）只用 be able to的情況： a. 位于助動詞后。 2）在否定句、疑問句中表示推測或懷疑。 典型例題 Peter ___e with us tonight, but he isn39。 （ 主觀上要做這件事 ） 2） have to有人稱、數(shù)、時態(tài)的變化，而 must只有一種形式。 You mustn39。 3） must 表示對已發(fā)生的事情的推測時 ， must 要接完成式。t。例如 ： At this moment, our teacher must be correcting our exam papers. 這時，想必我們老師正在批改試卷。例如 ： Mike can39。 3） ought to have done sth, should have done sth表示本應(yīng)該做某事 ， 而事實上并沒有做。例如 ： I dressed very warmly for the trip, but I needn39。 They should be there by now, I think. 現(xiàn)在他們該到那兒了。 had better have done sth表示與事實相反的結(jié)果 ， 意為 本來最好 。 10 would rather表示 寧愿 would rather do would rather not do would rather… than… 寧愿 … 而不愿。 9 had better表示 最好 ， 相當于一個助動詞 ， 它只有一種形式 ， 它后面要跟動詞原形。那時天很熱。例如： You ought to （ should） have been more careful in this experiment. 你當時在做試驗時應(yīng)該更仔細點。 注意 ： could, might表示推測時不表示時態(tài) ， 其推測的程度不如 can, may。例如 ： The road is wet. It must have rained last night. 地是濕的 ， 昨天晚上一定下雨了。t leave here until five o39。t hear the phone. I must have been asleep. 我剛才沒有聽到電話 ， 我想必是睡著了。 5 must表示推測 1） must用在肯定句中表示較有把握的推測 ， 意為 一 定 。例如 ： He had to look after his sister yesterday. 他昨晚只得照顧他姐姐。此句意可從后半句推出。t be a bad man. 他不大可能是壞人。 c. 表示過去某時刻動作時。 2） 情態(tài)動詞除 ought 和 have 外，后面只能接不帶 to 的不定式。 于是 ‖, 后面跟現(xiàn)在分詞短語 , 充當結(jié)果狀語 . 分詞短語作結(jié)果狀語一般置于句末 ， 有時前面帶有 thus, hence, therefore等副詞 ， 表示一種 ―可見的 ‖―順理成章 ‖的自然結(jié)果。如 : a room to live in a home to go to 注意 : 如果前面的名詞是 place 時 , 介詞可以省略 a place to live。 Asia, Africa, Europe, the North America, the South America, Antarctica, Oceania Step2. Warming up Use the water, the oil and the glass to do three experiments. Learn more about water‘s properties by doing some simple experiments and learn to describe an experiment. What property of water does each of the four experiments illustrate? What causes this phenomenon? What‘s this phenomenon related to? ① Experiment 1 shows how air pressure causes a piece of thick paper to cling to an upturned glass of water. ② Experiment 2 illustrates how substances with different density behave when placed in the same container. ③ Experiment 3 is an example of how water dissolves substances and objects. ④ Experiment 4 illustrates some of the differences between salt water and fresh water. Step3. Speaking 1. Prespeaking 1) Do you agree with the saying ―Without water, life would not exist. ‖ ? 2) So not only you and I agree with this opinion, but also the United Nations hold the same view. And that‘s why we have World Water Day. Q: Is there anyone who knows when it is? － Mar. 22 3) Brief background information about World Water Day: World Day for Water is established by the United Nations General Assembly39。 blackboard and multimedia Teaching Procedures: Step1. Leadin Ask the Ss some questions as follows T: Water is around us and inside us. We can‘t go without water. Qs: Why is water so important to living things? Can you point out some of its properties or characteristics? Suggested vocabulary: It39。 It can absorb a large amount of heat。 2) live through, pay 3) Left alone, drifting, loneliness, fear。 唯一的 ‖ This is a unique work of art. It is a unique opportunity for you to succeed. . 詞組 : unique to sb. /sth. 僅與一個人或一個群體或一件事物有關(guān) You should concern the special difficulties unique to blind people when building a gym. . 2. property n. 特性 , 性質(zhì) (c) 財產(chǎn) (u) Many plants have medicinal （ 藥物的 ）properties. mon property公共財產(chǎn) The car is my property. 3. Water is actually quite simple, but the way the water molecule is formed gives water its unique properties. the way the water molecule 在這個定語從句中 the way 的前面省略了 that 或 in which I don‘t understand the way (that / in which) he worked out the problem. 4. that is: 在句中有兩個意思和用法 ① that is : which mean , 也可說成 : that is to say ―即 , 就是 ‖ He is a local government administrator, that is to say a civil servant. ② that is : to be specific ―確切地 , 具體 地 ‖ She is a house wife –when she is not teaching English, that is. . 5. The nutrients in whatever falls into the ocean will quickly bee available to other living creatures. 1) a. whatever(=anything that)作為連接代詞引導(dǎo)名詞性從句 ， ―無論什么 ， 任何東西 ，一切事物 ‖， 語氣比 what強烈。 scientists and students have endless opportunities to study a variety of life in the habitat. Estuaries also contribute to the economy through tourism and fishing. ) Step 3. Language Points Paragraph Two 1. benefit 1) vt. ―對 … 有利 ‖, 后面接名詞 amp。 2 比較 can 和 be able to 1） can/could 表示能力 ； 可能 （ 過去時用 could） , 只用于現(xiàn)在式和過去式 （ could） 。例如 ： He was able to flee Europe before the war broke out. = He managed to flee Europe before the war broke out. 注意： could有時不表示時態(tài) 1） 提出委婉的請求 ，（ 注意在回答中不可用 could） 。 注意 ： might 表示推測時 ， 不表示時態(tài) ， 只是可能性比 may 小。的意思 ， have to 表示客觀的需要 ， must 表示說話人主觀上的看法 ， 既主觀上的必要。t表示 禁止 。（對現(xiàn)在情況的推測判斷） He must be working in his office. 他一定在辦公室工作呢。t you answer my phone call? 為何不接我的電話？ Well, I must have been sleeping, so I didn39。例如 ： I don39。 5） 推測的否定形式 ， 疑問形式用 can39。 Philip can （ could） have been hurt seriously in the car accident. 2） must have +done sth， 對過去時間里可能發(fā)生的事情的推測 ， 語氣較強 ， 具有 肯定 ， 諒必 的意思。） ought to 在語氣上比 should 要強。 8. should 和 ought to 除了上述的用法 ， 兩者還可表示 想必一定 ， 按理應(yīng)該 的意思。你最好穿上我的外套