人教版（2019）英语必修第二册《Wildlife Protection》SectionB PPT下载
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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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