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外研版八年级英语上册《Arnwick was a city with 200.000 people》Population PPT课件(第2课时),共16页。►pollution此处用作不可数名词,意为“污染;污染物”。eg:air pollution空气污染noise pollution噪音污染There's a lot of pollution in the air here.这里的空气含有大量的污染物。【拓展】pollution的动词形式是pollute,意为“污染;弄脏”,其过去式为polluted,现在分词为polluting。eg:All these waste products are polluting the river.所有这些废物正在污染着这条河。►public形容词,意为“公共的;公众的”。in public places意为“在公共场合”,相当于in public。eg:It's better to keep your voice down in public.在公共场合最好还是小点儿声。【拓展】public还可作名词,意为“公众”。in public意为“当众;公开地;公然地”;the public意为“大众;民众”,作主语时,谓语动词既可用单数,也可用复数。eg:It's impolite to talk loudly in public.在公共场合大声喧哗是不礼貌的。The public wants/want to know the truth.民众想了解真相。►service作名词,意为“服务”。其动词是serve,意为“为……服务”。eg:People hope to have free medical service.人们希望享受免费医疗服务。Science serves the people.科学为人民服务。►重点词组归纳move to搬到……in fact事实上all over the world世界各地have to不得不... ... ...关键词:Arnwick was a city with 200.000 people PPT课件免费下载,.PPT格式; 本作品中主体文字及图片可替换修改,文字修改可直接点击文本框进行编辑,图片更改可选中图片后单击鼠标右键选择更换图片,也可根据自身需求增加和删除作品中的内容,源文件无水印。如认为该内容涉嫌侵权,可通过邮件提出书面通知,我们将及时处理。