(3)The present situation is puzzling,and we are all puzzled about what will happen in the days to come.目前的形势令人困惑,我们都对未来几天将会发生什么感到困惑。

(1)puzzle over 　　　

(2)对......迷惑不解　　　

(3)puzzling adj.　　　

(4)puzzled adj.　　　

　　二、短语集锦

　　1.in time 及时;终于

　　【教材原句】 They were in time to produce carbon dioxide,nitrogen,water vapour and other gases,which were to make the earth's atmosphere.它们最终产生了碳、氮气、水蒸气和其他多种气体,从而形成了地球的大气层。

　　【观察思考】

　　(1)You are lucky to be in time for our party.你很幸运能及时参加我们的聚会。

　　(2)He made it in time when he failed thousands of times.

　　当失败了成千上万次后,他终于成功了。

　　【联系拓展】(1)He could not come on time because of the traffic jam.

　　因为交通堵塞,他不能准时(按时)到了。

　　(2)At no time should we give in to difficulties.我们在任何时候都不能向困难屈服。

　　(3)The bus was filled with students in no time.这辆公共汽车很快就被学生挤满了。

(1)in time 　　　

(2)按时;准时　　　

(3)立即;马上　　　

(4)从不;绝不　　　

　　2.in one's turn轮到某人;接着

　　【教材原句】 Thus they have,in their turn,become the most important animals on the planet.

　　于是,它们接着成为了这个行星上最重要的动物。

　　【观察思考】

　　Now that I have finished buying,Tom,in his turn,should cook.

　　既然我已经完成了采购,就该轮到汤姆来做饭了。

　　【联系拓展】

　　(1)We protect the environment and in turn it benefits us a lot.

　　我们保护环境,反过来保护环境会使我们受益匪浅。

　　(2)The children called out their names in turn.孩子们依次自报姓名。

　　(3)We took turns to drive the car on the way.

　　在路上我们轮流开车。

　　(4)It is your turn to do the experiment.轮到你做实验了。

(1)反过来,转而;依次;轮流;逐个　　　

(2)轮流做......　　　

(3)轮到某人做某事　　　

　　3.prevent...from...阻止;制止

【教材原句】 They are putting too much carbon dioxide into the atmosphere,which prevents heat form escaping from the earth into space.