【正文】 ever 還有 ―不管什么 ‖的意思 , = no matter what Whatever happens, we‘ll meet here tonight. 2) available adj. 可用的 ， 可獲得的 ， 有效的 ， 適宜的 sth. + be + available + to + sb. 某物對(duì)某人來(lái)說(shuō)是可得的 The information is available to anybody. The ticket is available to you for 3 days. sb. + be + available + for + sth. 某人對(duì) … 來(lái)說(shuō)是合適的 He is not available for the job. Are you available for a meeting tomorrow? available: ① =can be used or obtained by (指物 )可用的或可得到的 ‖. Chinese modities available for export are varied. I‘m sorry, those overcoats are not available in your size. That was the only available room. ② = free to be seen or talked to (不太常用 ) (指人 )可會(huì)見(jiàn)的 , 可與之交談的 The lawyer is not available now. Paragraph Four: 1. If a substance has a higher density, say 5, 000 kg/m3, it will not float on water. say: suppose as an example or a possibility ―設(shè)想 。代詞 , 但不接反身代詞 Exercise benefit our health. Your advice benefited me a great deal. . The fresh air will benefit you. 2) vi. ―獲益 , 得益于 ‖, 后面可接 from/ by We benefit by/ from daily exercises. The plants benefited from the rain. 3) n. 益處 , 好處 (可數(shù) amp。be able to可以用于各種時(shí)態(tài)。例如 ： Could I have the television on? 我能看電視嗎 ？ Yes, you can. / No, you can39。 2） 成語(yǔ) ： may/might as well， 后面接不帶 to 的不定式 ， 意為 不妨 。例如 ： My brother was very ill, so I had to call the doctor in the middle of the night. 弟弟病得很厲害，我只得半夜里把醫(yī)生請(qǐng)來(lái)。例如 ： You don39。 比較 ： He must be staying there. 他現(xiàn)在肯定在那里。t hear it. 唉，肯定在睡覺(jué)，所以沒(méi)有聽(tīng)見(jiàn)。t know where she is, she may be in Wuhan. 我不知道她在哪兒，可能在武漢。t, couldn39。例如 ： Linda has gone to work, but her bicycle is still here. 琳達(dá)已經(jīng)去上班了 ， 但她的單車(chē)還在這兒。 4） needn39。例如 ： I ought to be able to live on my salary. 靠我的薪水，想必也能維持了。 She39。例如 ： If I have a choice, I had sooner not continue my studies at this school. I would rather stay here than go home. = I would stay here rather than go home. 典型。d better put on my coat. 天相當(dāng)冷。例如 ： I would like to have read the article, but I was very busy then. 我想讀這篇文章 ， 但太忙了一直沒(méi)讀。 （ 事實(shí)上已扔了。例如 ： Philip may （ might） have been hurt seriously in the car accident. 菲力浦可能在車(chē)禍中受了重傷。例如 ： Your mother must have been looking for you. 你媽媽一定一直在找你。t be home yet. 6 表示推測(cè)的用法 can, could, may, might, must 皆可表示推測(cè) ， 其用法如下 ： 1） 情態(tài)動(dòng)詞 +動(dòng)詞原形 ， 表示對(duì)現(xiàn)在或?qū)?lái)的情況的推測(cè) ， 此時(shí)動(dòng)詞通常為系動(dòng)詞。例如： Why didn39。例如 ： You have worked hard all day. You must be tired. 你辛苦干一整天 ， 一定累了。t have to表示 不必 ， mustn39。必須 39。例如 ： May God bless you! 愿上帝保佑你 ！ He might be at home. 他可能在家。 e. 表示成功地做了某事時(shí) ， 用 was/were able to， 不能用 could。 4） 情態(tài)動(dòng)詞沒(méi)有非謂語(yǔ)形式，即沒(méi)有不定式，分詞，等形式。 provide both recreation and education for human beings. ) 3). Text analysis: Ask Ss to make an analysis of the main reading text—Nature‘s Nursery: Estuaries Check the answers: Part 1. Estuary is our pla‘s nursery Part 2. Estuaries are great places for nature‘s young creatures Part 3. They help clean our water. Part 4. They provide recreation and education for human beings. Ask Ss to make an analysis of the main reading text—Life In The Ocean 2. Scan the passage and answer the following questions. 1). Why are estuaries such good places for nature‘s young ones? (In estuaries, animals can enjoy all the benefits of the oceans without having to face many of its dangers. Tides provide energy for the ecosystems, but estuaries are protected from waves and storms by islands, mud or sand. Nutrients from both the land and the ocean arrive in estuaries. ) 2). What does ―density‖ mean in this passage? (It means the degree to which an area is filled with things or people. ) 3). How do estuaries affect the water that passes through them? (They absorb nutrients and pollutants from water ing inland sources, thus cleaning our water. ) 4). Why are estuaries more sensitive to pollution than other areas? (Because estuaries act as filters(過(guò)濾器 ), many pollutants end up in them. ) 5). Why are estuaries important to human beings? (Estuaries provide both recreation and education for human beings. For example, people can fish, swim and have fun on the beach。 僅有的 。s theme Water for Life. It will be the starting day for this International Decade for Action, Water for Life. 2. Whilespeaking 1) To some extent, the existence of World Water Day also implies that human beings cannot live without water. Why? Can you tell how water is being used in our life? Give some examples. － Electricity, agriculture, home use, industry, transport, entertainment, etc. 2) Look at the first picture (―electricity‖) in the textbook and talk about it. The water is being used to generate electricity. Building up behind a high dam, water accumulates potential energy (勢(shì)能 ). This is transformed into mechanical energy when the water rushes down. It is a good way to use water because water is renewable green energy. It will never run out if only we use it properly and generating electricity by using water is a better way to protect the environment than others. However, it takes a great sum of money and a long period of time to build a dam and prepare all the required equipment. Since nowadays electricity has already been an indispensable part of our life, most people benefit from using water in this way. 3) Group work. Divide students into several groups with six in each. Each one takes charge of one picture. When discussing each picture, please think about the following questions: How is water being used? What property of water enables it to be used in this way? Why do we use water in this way? Who benefits from using water in this way? Is this a good way to use water? What are some disadvantages of using water in this way? 4) Pair work. Each sixmember group can be divided into three smaller ones with two in each. Make a dialogue on the basis of the results about your topics we reach, using following useful expr