【知識點】
1.單詞和詞組
fine 細的 fine rain 細雨 for ever 永遠 get away 逃脫
set...on fire 使燃燒 downhill 下山 shower 陣雨
lightning 閃電 fox 狐貍 inspire 鼓舞
2.日常交際用語
I guess /believe (that)
It seems (that)....
She/He/They must have done....
It looks as if....
It certainly is.
3.語法
復習和歸納句子的成分－－狀語。
【重點難點講解】
1．本單元的標題 The find of the century可譯作"本世紀偉大的發現"。此處的 find 不是動詞，而是名詞，作"發現的(有價值的)東西"(something good or valuable that is found)解。例如：
The little bookshop is a real find. I didn't know it existed.
這家小書店確實是個重要的發現，我以前還不知道有這家書店呢。
2．One moment we were walking along the top of a hill and now we could see no more than about thirty metres ahead of us. 剛才我們還在山頂上行走，而現在30公尺開外的地方就看不清了。
One moment…, and now…結構，意思是"剛才……，現在卻又……。"這里的one moment相當于just a moment ago的意思。例如：
One moment she was reading and now she fell asleep.
剛才她還在看書的，現在卻睡著了。
3．We had lost the path and had no hope of finding it again. 我們找不到那條小路，而且也沒有希望再找到了。
hope可以作不可數名詞，后面常可跟of引起的介詞短語(hope of ＋ n. ／-ing)，如本句中的hope of后跟-ing形式短語。例如：
He gave up all hope of success. 他不再抱成功的希望了。
They have not much hope of winning the game. 他們對于贏得這場比賽沒抱多大希望。
4．Then the grass turned to bushes and the hillside became steeper.
接著，野草變成了矮樹叢，山坡也變陡了。
句中的 turn to作"變成"(become)解，后跟名詞。例如：
Ice turns to water if the temperature goes up. 如果溫度上升，冰就變成水。
It was getting colder, and the rain turned to snow. 天氣越來越冷，下雨變成了落雪。
turn to除了作"變成"解外，還可以作"(把書頁)翻到"、"轉向"、"求助于"解。例如：
Please turn to page 128 for the key to the exercises. 請翻到第128頁找練習答案。
You'd better turn to your audience when you're speaking. 你說話的時候，最好是面對聽眾。
They always turn to me when they are in trouble.他們有困難的時候，總是來找我幫助。
5．"We can make a fire and warm ourselves.""我們可以生個火來暖暖身子。"
make a fire生火，把火生起來。例如：
I feel very cold. Please make a fire. 我感覺很冷，請把火生起來吧。
6．I always carry matches with me at such times and I tore out the pages of the first chapter of the book I was reading to get the fire going. 在這樣的時候我總是帶著火柴的。我把我正在讀的書的第一章那幾頁撕下，使火燒起來。
1)tear out撕下，扯下，拔出(＝ remove sth. roughly by pulling)。例如：
He wrote quickly the address down in his notebook, tore the page out, and handed it to me.他在筆記本上匆匆地寫下地址，撕下那一頁來交給了我。
The telephone wires have been torn out, so we can't call the police. 電話線被拔掉了，所以我們不能報警。
2) get (sth.) going的意思是"使(某物)開始活躍"或"使(某物)開始工作"(cause sth. to be active, working, etc.)。例如：
It's difficult to get the car going on cold mornings. 冷天的早晨很難把汽車發動起來。
Can you get the clock going again? It's stopped for a week. 你能使這鐘重新走動嗎？它停了一周了。
7．"I think someone has been carving animals.""我看是有人一直在這兒雕刻動物哩。"
本句中賓語從語的謂語動詞用了現在完成進行時態"has been carving"。這個時態由"have／has been＋-ing形式"構成，它表示從過去某一時間開始一直延續到現在的動作。這一動作可能剛剛結束，也可能仍在繼續，并可能延續到將來。例如：
How long have you been waiting here?----I've been waiting here for about half an hour.你在這兒等多久了？-我在這兒大概等了半個小時。(等的動作從半個小時前開始，現在剛剛結束。)
I've been sitting here for an hour.(I sat down here an hour ago, and I'm still sitting here.)我在這兒坐了一小時了。(一小時前我坐在這兒，現在仍在坐著)。
She has been studying English since she came to this school. (She began to study English when she came to this school. She's still studying English now and will go on studying English.)她從進校以來一直在學習英語。(從進校開始學英語，現在仍在學，而且將繼續學下去。)
請比較下列各句，注意現在完成時態和現在完成進行時態在時間概念上的區別：
I've written an article. 我寫好了一篇文章。(現在已經寫完了)
I've been writing an article. 我一直在寫一篇文章。(現在還在寫)
He has repaired my bike. 他把我的自行車修好了。(現在已經修好了)
He has been repairing my bike this afternoon. 今天下午他一直在修我的自行車。(現在還在修)
由此可見，現在完成時強調"動作已完成"，而現在完成進行時強調"動作仍在進行"。
但是少數動詞(如live，study，teach，work等)用現在完成時和現在完成進行時的意思是差不多的。例如：
How long have you studied/been studying here? 你在這兒學習多久了？
He has lived/ been living there for ten years. 他在那兒住了十年了。
8．I went further back into the cave and stopped still. 我再往巖洞里邊走去，然后站住不動了。
still是形容詞，意思是"原地不動"。still的此種用法多與stay/ stand/ sit/ lie連用，構成系表結構。例如：
They pushed and pushed, but the truck stood still. 他們推呀推呀，而卡車卻一動也不動。
The old man stood still by the window. 那位老人安安靜靜地站在窗戶旁邊。
Can't you sit still for a moment, Jim? 吉姆，你難道不能安靜地坐一會兒嗎？
He lay still in bed and was deep in thought. 他靜靜地躺在床上，陷入了沉思。
9．I turned the corner and looked in astonishment. 我轉過拐角，驚奇地望著。
in astonishment驚奇地。在句中作狀語，表示行為方式，修飾動詞look。
介詞in可以和一些表示情緒的名詞連用，構成方式狀語。如
in fear(害怕地)、 in surprise (驚奇地)、 in anger(憤怒地)、 in grief(憂郁地)、 in happiness(高高興興地)、 in sorrow (愁苦地)等。
10．…we've still got a little food and water and maybe by tomorrow morning the weather will have cleared up.……我們還有一點食物和水，也許明天早晨就會晴了。
句中的短語動詞clear up作"(天氣)轉晴"解。例如：
The weather has cleared up; we can go out. 天晴了，我們可以出去了。
It's raining now, but I think it will clear up soon. 現在正在下雨，但是我看天氣很快會轉晴的。
It looks as if the rain will continue for some time, but it may clear up before dark. 看起來雨還會下一些時候，不過天黑前也許會轉晴的。
clear up還可作"露出喜悅的表情"解。例如：
Her face cleared up as she read the letter. 她看信的時候，面露喜色。
clear up作及物用時還可以作"整理"、"收拾"、"澄清"、"解決"解。例如：
When you have finished your meal, please clear up the kitchen. 你吃完飯后，請把廚房收拾一下。
You'd better clear up the classroom before you go home. 你們回家前最好把教室打掃一下。
The book has cleared up many problems for me. 這本書給我解決了許多難題。
The teacher cleared up the harder parts of the story. 老師講清了故事中比較難于理解的部分。
11 ．Neither of us realized that night that these carvings and paintings dated back 15,000 years, nor that the headline in the newspaper would be"The find of the century ---- children aged 13 and 11 discover cave paintings."那天晚上，我們誰也沒有意識到，這些雕刻和繪畫已經存在1.5萬年了，我們也沒有想到報紙的標題竟會是："本世紀的重大發現-13歲和11歲的兒童發現了巖畫。"
1）date back(to)可追溯到，從……時候開始有，已存在……(時候)了。例如：
This custom dates back several centuries. 這種習俗已經存在幾個世紀了。
The castle dates back to the 14th century. 這座城堡從14世紀起就開始有了。
This church dates back to 1173. 這座教堂始建于1173年。
2） Children aged 13 and 11中的aged 13 and 11是后置定語，修飾前面的名詞children。這里的aged是形容詞，作"有……歲"、"……年紀的"解，也可以作"老年的"、"上了年紀的"解。例如：
Only the young girls aged 18-25 are fit for the job.
只有18-25歲的年輕姑娘才合適做這項工作。
3)Children aged 13 and 11 discover cave paintings, 這是報紙上的標題。其中的謂語動詞discover用的是一般現在時，而不是一般過去時。這是因為在報紙上的標題、圖片說明、電影說明、戲劇的舞臺說明中動詞常用一般現在時。
【語法－狀語】
1， 有許多種狀語從句，要根據主句與從句的邏輯關系決定用什么連詞。狀語從句一共有九種：時間、條件、原因、讓步、目的、結果、方式、比較、地點等。
The temple is in good state because it is repaired every two years. (原因)
If you are not sure about it, you may refer to the dictionary. (條件)
Although it's not easy, we can manage it. (讓步)
2，用非謂語動詞作狀語時，要注意主句的主語是什么，才能決定該用現在分詞、過去分詞還是不定式。
Having received a lot of letters he decided to write answers at once. (他主動收到信。)
Having been given more time, we could have finished it. (我們被給予時間。)
To finish the task on time they worked day and night. (他們主動完成任務。)
He has returned only to be sent away again. (他被送走。)
3，副詞作狀語位置比較靈活，可置于句首、句中或句尾。當地點狀語與時間狀語并列時，一般將地點狀語置于時間狀語之前。
He speaks English badly but reads it well.
Naturally we expect you to come as early as possible.
On Third Road last night an accident happened.
【詞語辨析】
1, ought與should：
ought的意思是應該，應當。通常表示有責任或義務，有時還表示有需要的意思。例：
You ought to go there.你應該到那兒去。
You ought to eat more.你應當多吃一點。
You ought to have told me that yesterday.你昨天就應該把那件事情告訴我。
should也有應該、應當的意思，也表示有責任或義務，但與ought相比，其意味較弱，它有時還表示有必要。例：
You should be more careful.你應該細心一些。
He should have told me the news yesterday.他昨天就應該把這消息告訴我。
It is necessary that we should go here at once.我們必須立即去那兒。
2， tired與exhausted：
tired 的意思是疲倦、疲乏、疲勞、累。它是普通用語，大量用于日常生活中，意味較弱，通常指費力過度而感到疲勞。它還可表示感到厭倦、厭煩的意思。例：
Are you tired?你累了嗎？
My eyes were tired from reading in a poor light.因在不良的光線下閱讀，我的眼睛很疲勞。
We are tired of hearing the old story.這老話我們聽厭了。
exhausted的意思是疲憊、勞累，意味較強，指由于長時間費力過度，以致精力耗盡。例：
Tom was too exhausted to eat his dinner.湯姆已精疲力竭，不想吃飯了。
I was too exhausted to wake easily when once asleep.我太累了，只要倒頭一睡就很難醒過來了。
3， animal與beast：
animal的意思是動物，是相對于植物而言，是動物的總稱，通常指獸、鳥蟲、雨等。例：It is an animal of monkey kind.這是一種屬猴類的動物。
The animal is hungry.這個動物餓了。
beast的意思是四足動物，獸，通常指不包括爬行動物的較大的四足動物。例：
The camel is a beast of burden.駱駝是負重的動物。
The tiger is a beast of prey.老虎是猛獸（食肉獸）。