人教版高中英语必修二 《Wildlife Protection》SectionB PPT下载

人教版高中英语必修二《Wildlife Protection》SectionB PPT下载，共27页。

语言知识讲练

高 频 词 语

1. reduce vt. 减少

【典例促记】

⊙It is reported that living spaces for wildlife are being reduced due to the cutting of trees. (P18)

据报道，由于砍伐树木，野生动物的生存空间正在缩小。

⊙Costs have been reduced by 20% over the past year.

在过去一年里，各项费用已经减少了20%。

⊙The skirt was reduced to ￡10 in the sale.

在大减价期间，这条裙子减价到10英镑。

⊙The number of employees was reduced from 40 to 25.

雇员人数从40人减少到了25人。

2. due adj. 由于；因为

【典例促记】

⊙When the car is due for its annual service again, please remind me.

当这辆汽车到再次进行年度保养时，请提醒我。

⊙The boat is due to arrive at 12, so remember to meet me on time.

船预计在12点到，记着准时去接我。

⊙Thank you for delivering my goods here. Ten dollars  is due to you.

多谢你把货物送到这儿，我应付你10美元。

⊙Because of/Owing to the snow, the pilot had to land the plane at another airport.

由于下雪，飞行员不得不把飞机降落到另一个机场。

⊙Thanks to your help, we were successful.

由于你的帮助，我们得以成功。

现在进行时的被动语态的用法

1. 表示此刻正被进行的动作，句中常用now, at the moment等时间状语

【典例呈现】

◎More patients are being examined by the doctor now.

更多的病人现在正在接受医生的检查。

◎Several new lines are being built now and will be completed in the near future.

几条新路线正在修建，最近就要完成了。

2. 表示现阶段正被进行的动作，但此动作在此时此刻不一定正在发生

【典例呈现】

◎Many interesting experiments are being carried out these days.

这些天许多有趣的实验正在被进行。(说话时并不一定正在进行)

◎Our children are being educated to be green in everything they do.

我们的孩子所受的教育是凡事都要注重环保。

3. 表示一种经常性的被动行为，常和always, constantly, frequently等表示频率的副词连用，这种用法常常带有说话者的赞扬或厌恶的感情色彩

【典例呈现】

◎I wonder why the window of our classroom is frequently being broken.

我想知道为什么我们教室的窗户经常被打破。

◎Players are always being encouraged to talk as if they are fans first.

人们总是鼓励球员们首先要以自己是个球迷的口吻说话。

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