1、 1. decrease vt./vi. & n. 減少，降低減少，降低 If their habitat is threatened or they cannot find enough food， their number may decrease. 如果其棲息地受到威脅，或者無法如果其棲息地受到威脅，或者無法覓取足夠的食物，它們的數(shù)量就可能減少。覓取足夠的食物，它們的數(shù)量就可能減少。(P25) 讀一讀讀一讀 閱讀下列句子，歸納閱讀下列句子，歸納decrease的詞性、的詞性、意義和用法。意義和用法。 The price of this type of MP3 player has

2、 decreased by 15%. (詞性詞性: vi.； 意義意義: 減少減少;搭配搭配: 表示表示“減少減少了了”) The number of new students decreased from 210 to 160 this year. (詞性詞性:_意義意義:_搭配搭配:表示表示“從從減少到減少到”)vi.減少到減少到 They are making every effort to decrease the production cost. (詞性詞性:_意義意義:_) The decrease in unemployment was 30 percent. (詞性詞性:_意義

3、意義:_)vt.減少減少n.減少減少練一練練一練選擇選擇decrease/increase并用其正確形并用其正確形式填空。式填空。 The number of visitors _ sharply in the past two months. The _ worries the manager. “Something must be done to _the number of visitors.” he thought.increasehas decreaseddecreasedecrease by 減少了減少了decrease (from .)to .(從從)減少到減少到increase

4、 v. & n. 增加，增長增加，增長increase by 增加了增加了increase (from .)to .從從)增加到增加到 記一記記一記 2. die out滅絕滅絕 As a result these endangered animals may even die out. 結果，這些瀕危動物甚至可結果，這些瀕危動物甚至可能滅絕。能滅絕。(P25) 讀一讀讀一讀 閱讀下列句子，體會與閱讀下列句子，體會與die相關短相關短語的不同意思。語的不同意思。 Elephants would die out if man shot as many as they wished. (

5、) He hid behind the door until the foot steps had died away. ( )滅絕滅絕逐漸減弱逐漸減弱, 逐漸消失逐漸消失練一練練一練 用用the death of、die from、die out、dying to的正確形式填空。的正確形式填空。 Kathy is always 1_ see species of wildlife. She appreciates that many types of plants and animals 2 _in the wild every year， and most of them 3_ too m

6、uch hunting and destruction of their habitats. She bursts into tears every time she hears about 4 _ wild animals.the death ofdying todie outdie fromdie out滅絕滅絕die away逐漸減弱，逐漸消失逐漸減弱，逐漸消失die for為為而死而死die of/from 因因而死而死 記一記記一記 3. loss n.丟失，迷失丟失，迷失 . loss of bamboo growing areas.竹子生竹子生長區(qū)的消失。長區(qū)的消失。(P25)

7、讀一讀讀一讀 閱讀下列句子，指出劃線單詞的詞閱讀下列句子，指出劃線單詞的詞性、意義和用法。性、意義和用法。 You will lose your job if you keep on like this. (lose詞性詞性:_意義意義:_ )vt.失去失去 Lost time is never found again.(lost詞性詞性:_詞義詞義_ ) I am at a loss what to do next. (loss詞性詞性:_詞義詞義_ )adj.丟失的丟失的,失去的失去的n.丟失，迷失丟失，迷失 練一練練一練用用lose的適當形式填空。的適當形式填空。 She was at

8、a _ when she heard the news that her son was_ in the forest. She couldnt bear(承受承受)the thought of _him. Fortunately， her son was just _ in studying a special type of wild animal and forgot the time to go home.lostlosslostlosingat a loss不知所措，困惑不知所措，困惑be lost in sth. 全神貫注，沉浸于全神貫注，沉浸于be lost in thought

9、 陷入深思陷入深思 記一記記一記 4. hunt vt/vi/n 打獵，搜尋打獵，搜尋 .too much hunting in the 1950s.在在20世紀世紀50年代的過度捕獵。年代的過度捕獵。(P25) 讀一讀讀一讀 閱讀下列句子，歸納閱讀下列句子，歸納hunt的詞性、的詞性、意義和用法。意義和用法。 Police are hunting for a thief who broke into the house yesterday. (詞性詞性:_意義意義:_搭配：搭配：hunt for 意為意為_ )正在追捕正在追捕 v. 尋找尋找 Hundreds have joined in

10、a police hunt for the missing teenager.(詞性詞性:_詞義詞義_) Since the 1970s tiger hunting has been illegal in this country.(詞性詞性:_詞義詞義_)搜尋搜尋 打獵打獵 n. n. 練一練練一練用用hunt/hunter/hunting/hunt for的正的正確形式填空。確形式填空。 Mr. Smith is an excellent _ who used to make a living by _ wild animals. After wild animal _was forbid

11、den he had to go to the city to _ a new job. hunt for hunterhuntinghuntinghunt for搜尋，追蹤搜尋，追蹤go hunting去打獵去打獵job hunting找工作找工作house hunting找房子找房子 記一記記一記 5. in peace和平和平/和睦和睦/安祥地安祥地 . about 30-40 remain after being left in peace with no hunting.在免受捕獵打擾后，在免受捕獵打擾后，約有約有30到到40只存留下來。只存留下來。(P25) 讀一讀讀一讀 閱讀下列句子，體會與閱讀下列句子，體會與peace相關短相關短語的不同意思。語的不同意思。 He just wants to be left in peace. (意義意義_ ) The countries have been at peace for more than a century. (意義意義_ )和平和平/和睦和睦/安祥地安祥地處于和平局面處于和平局面練一練練一練用用in peace/at peace/ at war填空。填空。 All the villagers l