(
课件网) Unit 2 Words and Expressions 1．Our planet's wildlife is dying out at an alarming rate. 我们地球上的野生动物正以惊人的速度灭绝。(教材P14) die out灭亡；逐渐消失 【典型例句】 Many old customs are gradually dying out. 许多旧习俗在逐渐消失。 Many species of animals are in danger of dying out. 许多种类的动物都有灭绝的危险。 【即学即练】用die out, die away和die down填空 ①Many rare animals are dying_out.We must find ways to protect the environment. ②His anger has died_down a bit. ③As the sound of the music died_away,_the film came to an end. 【思维拓展】 die away(声音、风、光等)慢慢变弱；渐渐消失 die down逐渐变弱；逐渐平息 die off相继死去；先后死去 2.Our planet's...is dying out at an alarming rate. 我们地球的……正以惊人的速度消亡。(教材P14) alarm vt.使惊恐；使害怕；使担心 n．恐慌；警报；警报器 【典型例句】 I don't want to alarm you, but there's a strange man. 我不想吓着你，不过有个生人。 Environmentalists are alarmed by the dramatic increase in pollution. 污染的急剧加重令环保主义者害怕。 He jumped up in alarm. 他惊恐地跳了起来。 He decided to sound the alarm. 他决定发出警报。 【即学即练】单句语法填空 ①The little girl was alarmed at/by the snake. ②The boy was alarmed to_see (see) the bear walking to him. ③We were_alarmed (alarm) at the alarming (alarm) scream as the scream did alarm us., 【思维拓展】 be alarmed by/at sth.因……而惊恐/害怕 alarm sb. to do...惊得某人做…… in alarm惊恐地(常作方式状语) raise/sound the alarm发出警报 3.We must make people aware of the problem... 我们必须使人们意识到这个问题……(教材P14) aware adj.知道；发觉；有……意识的 【典型例句】 The children were aware of the harm of taking drugs. 孩子们意识到了吸毒的危害。 Most people are aware of the dangers of drunk driving. 大多数人意识到酒后开车的危险。 The failure made me aware of my own shortcomings. 这次失败使我意识到了我自己的缺点。 【即学即练】单句语法填空 ①Many people lack the awareness (aware) of wildlife protection, resulting in hunting the animals illegally. ②She was not aware of having done wrong. ＝She was not aware that she had done wrong. ＝She was not aware of what she had done was wrong. 【思维拓展】 be/become aware of对……知道、明白；意识到 be aware that/wh－clause察觉到；意识到 awareness n．意识，明白 4.How many elephants are killed on average every day？ 平均每天有多少头大象被杀？(教材P14) average n．平均数；平均水平 adj.平均的；正常的；普通的 【典型例句】 His average income is ten pounds a week. 他的平均收入为一星期十英镑。 Perhaps you are a student of average intelligence. 你可能是一个智力一般的学生。 On average, boys like playing football better than girls. 一般来说，男孩比女孩更喜欢踢足球。 He is working hard and his grade is above the average in his class. 他学习刻苦，成绩在班里高于平均水平。 【即学即练】单句语法填空 ①The temperature here in summer is twenty centigrade on average. ②An average of ten students haven't passed the exam in each class. ③This year the price of pork is abo ... ...
