Unit 13 The USA课件.ppt

Unit 13? The USA 一、教学目标与要求 通过本单元教学，学生应能熟练地运用表示“提供和拒绝帮助”的常用语；复习句子的成分——主语；了解纽约的发展历史和土著人被压迫的历史。 二、教学重点与难点 1．重点词汇 a handful of, worth, tear down, pass through, take possession of, die out 2．重点句型 1)Today Native Americans express their anger over this business deal. 2)This is because the surface of the earth is not flat but round. 3)Now that they could ride horses, it became easier to hunt the bison. 4)This in return had an effect on the food supply for wolves. 精品 3．语法 复习和归纳句子的成分——主语 1)The first settlers on the plains were farmers． 2)The killing of the bison changed the whole wild life of the plains. 3)Whether he will come or not is unknown． 4)To see is to believe． 5)The learned should be respected. 1)Can I help you? 2)What can I do for you? 3)Let me… 4)Would you like…5)Thanks 6)Thats very kind of you．7)Thats very kind of you, but… 三、难点讲解 1．Now that they could ride horses, it became easier to hunt the bison． now that此处等于since，意为“既然”。例如： 1)Now that you have come you may as well stay．既然你来了，就留下吧。 2)Now that we are alone, we can speak freely．既然我们单独在一起，就无拘束地说说。 2．In 1626 the island of Manhattan was bought from local Indians, Native Americans, for a handful of goods worth about ＄ 24． worth用作形容词，意为“有……的价值，值……”。 worth通常用于：be worth sth./doing sth.。 例如： 1)This old book is worth ＄ 300．这本旧书值300美元。 2)This novel is worth reading．这本小说值得读。 精品 3．The insects which lived on these plants died out. A．die out 熄灭，绝种，不复存在。例如： 1)The fire died out．火灭了。 2)These animals have already died out．这类动物已绝种了。 B．die away 消逝，平息、平静下来。例如： The noise died away．声音慢慢地消逝了。 C．be dying for 渴望……，很想……。例如： Im dying for a cup of tea．我很想喝杯茶。 D．be dying to do…很想(做)……，渴望(做)……。例如： She is dying to see you．她渴望见到你。 E．die from 死于(常因外部、偶然原因而死)。例如： He died from air pollution．他死于空气污染。 F．die of 死于(表示因内部原因、疾病而死)。例如： She died of old age (sorrow, cancer).她因年老(忧伤、患癌症)而死。 四、复习与检测 Ⅰ．从A、B、C、D中找出其粗部分与所给单词的加粗部分读音相同的选项。 1．Collar A．Colour B．Poster C．Water D．cough 2．Diamond A．Friend B．Science C．Piano D．period 3．Sign A．Disease B．Design