【正文】 nts the names of Oceans and Continents: The Pacific Ocean, the Atlantic Ocean, the India Ocean, the Arctic Ocean。 2) live through, pay 3) Left alone, drifting, loneliness, fear。 It keeps the earth‘s temperature steady. Step 4. Language Points Paragraph One: 1. range from…to … range between …and … 在 …… 和 …… 之間變化 There are 200 boys ranging from 7 to 14 in age. Prices ranged from 5 dollars to 10 dollars. The show had a massive audience, ranging from children to grandparents. range over 范圍包括 Our conversation ranged over many subjects. 2. all the way 自始至終 ， 一直 ， 一路上 All the way back, they talked about the persons and things that they could remember at school. It is very kind of you to e all the way to see me. We stayed in the game all the way. by the way順便一題 in no way絕不 in a way在 某種程度上 in the way阻礙 3. a great place to live 不定式短語作后置定語修飾表示地點的名詞時 , 如果這個不定式中的動詞時不及物動詞 , 后面必須跟一個介詞 。 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)作為連接代詞引導名詞性從句 ， ―無論什么 ， 任何東西 ，一切事物 ‖， 語氣比 what強烈。從而 。 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。促進某事物 Her work has contributed greatly to our understanding of this difficult subject. The chairman encourages everyone to contribute to the discussion. Step 4. Listening and Reading Aloud T: Very good. You‘ve understood the text exactly. Now, I‘ll play the tape for you. First, listen and repeat, paying attention to the pronunciation and intonation. Then read it aloud for a while. Step 5. Writing Do you still remember what we learn about the properties of water? In that passage, the writer introduces the chemical structure and several properties of water to us, such as salinity, density, heat capacity. So from this we know when we are explaining what something is or how things happen, it is important that our explanations should be well anized and easy to understand. Tip one If we are describing a process， we‘d better explain each step in the order it happens. Tell the readers about the causes and effects and use words like first, second, then, etc to show the order of the steps. First… Second… Third/ Then… Last… Tip two If we are writing about something that has several parts, we should describe each part and explain its function and structure. The following questions may help: What is it? How many parts is it made up of? What‘s the structure of each part? How does it work? Step 5. Homework Imagine that your science teacher ask you to explain one of the following questions: Why does an ice cube float? What will happen to a piece of metal if you put it in water? Why do so many species live in estuaries? Why have so many cities been built by estuaries? Choose one of the questions and write a passage, using what you know about nature and science and what you have learned from this unit. Period 5 Grammar: Modal Verbs Teaching Aims and Demands: To review Modal Verbs ( to enable the Ss to grasp some important Modal Verbs and some important usages of them . ) Teaching Difficult Points: 1. to grasp the differences among some Modal Verbs 2. to learn how to use them. Teaching Aids: Some worksheets and some slides. Teaching Procedures: Step1. Check the answers to exercise1 on P21. Step 2. Review Modal Verbs. 1 情態(tài)動詞的語法特征 1） 情態(tài)動詞不能表示正在發(fā)生或已經(jīng)發(fā)生的事情 ， 只表示期待或估計某事的發(fā)生。 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） 。 b. 情態(tài)動詞后。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） 。例如 ： He couldn39。 注意 ： might 表示推測時 ， 不表示時態(tài) ， 只是可能性比 may 小。t very sure yet. A. must B. may C. can D. will 答案 B. 表可能性只能用 may。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。但 must 可用于間 接引語中表示過去的必要或義務(wù)。t表示 禁止 。t tell him about it. 你不得把這件事告訴他。（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。例如 ： I didn39。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 ： If Tom didn39。例如 ： I don39。 3）情態(tài)動詞 +動詞完成時，表示對過去情況的推測。 5） 推測的否定形式 ， 疑問形式用 can39。t have found his car, for he came to work by bus this morning. 邁克一定還沒有找回他的車，因為早上他是坐公共汽車來上班的。 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。 否定句表示 不該做某事而做了 。） ought to 在語氣上比 should 要強。t have done so. The weather was hot. 旅行時 ， 我衣服穿得較多 ， 其實沒有必要。 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。 The poems should be out in a month at most. 詩集估計最多還有一個月就要出版了。你最好穿上我的外套。例如 ： You had better have e earlier. 你本該來得早一點