Unit8（第23讲—第25讲）

　　语法：

　　1.注意掌握副词放在句首做状语，修饰整个句子的用法，如：

　　1） Basically， there are two types of families.

　　2） Traditionally， all the members of an extended family lived in the same area.

　　2. 掌握连接词的用法，连接词可以用来帮助使前后文更加连贯。

　　1）The children stay in the nuclear family until they grow up and marry.

　　2） Then they form new nuclear family..

　　3）The members…are related by blood or by marriage.

　　4）They are all related， so the members of an extended family are called relatives.

　　5）However， with the change from an agricultural to an industrial society， many nuclear families moved away from the family home in order to find work..

　　6） …but most extended families do not live together.

　　7） Therefore we can say that the nuclear family becomes more important than the extended family as the society industrializes.

　　8） The nuclear family is becoming smaller as parents want fewer children， and the number of…

　　9） …both the father and the mother earn money for the family…

　　10） Most single parents find it very difficult to take care of a family alone， so they soon marry again and form remarried families.

　　以上句子中的画线单词有连词也有副词，在句子中都起连接词的作用。

　　本课简介

　　技术是否也是一把双刃剑，在给人们带来帮助的同时也带来了弊端？本课通过卫星通讯的利弊昭示人们“明智”地运用技术才能使我们走向成功。

　　卫星、计算机和电视的三结合改变了人们的生活。卫星被用来传送电视节目、电话和印刷材料；卫星被用于远程教育，使边远地区的人们通过“空中教室”接受教育；卫星被用来帮助生活在交通不便的偏僻地区的人们；卫星使世界各地的人们便捷地获取信息。然而侵犯隐私、使人与人之间疏于接触交流等弊端也应引起关注。

　　本课主要语言点

　　1.At the beginning of the twentieth century， there were four powerful means of transmitting and receiving information over long distances：…

　　本句中的beginning 是一个名词，意思是“开始，开端”。如：

　　1）from beginning to end （从头到尾）.

　　2）He has made a good beginning. （他开了个好头。）

　　3）I'm afraid I won't have the

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