一.掌握本单元出现的单词和词组：

　　set, fight, death, enemy, honest, slave, slavery, owner, law, freedom, lawyer, president, wise, spare, union, war, set…free, in all, no more than, break out, break away from, join up, consider…as, call for, beat to death, of one’s own, spare time

　　二.本单元知识重点与难点分析

　　1.Political leaders fought against slavery; they wanted freedom for all slaves.

　　　政治领袖们仅对奴隶制，他们想为所有的奴隶争得自由。

　　　fight against意思是“为反对……而斗争”，“和……斗争”。例如：

　　　In the second world war, Britain fought with France against Germany.

　　　在第二次世界大战中，英国和法国联合作战抗击德国。

　　　Man is fighting against pollution. 人类正与污染作斗争 。

　　　fight for …意思是“为……而斗争” 例如：

　　　the workers are fighting for their rights. 工人们在为争取他们的权利上而斗争。

　　　fight for freedom( peace, fights) 为自由（和平，权利）而斗争。

　　2.In the end意思是“最后”，“终于”。相当于“at last”,“finally”。例如：

　　　He tried many different jobs, and in the end he became a postman.

　　　我做过多种工作，最后当了邮递员。

　　　I’m sure that everything will be all right in the end .

　　　我相信最后一切都会好起来的。

　　　(2)set free作“释放”，“给……自由”解。

　　　The slave owners didn’t agree to set their slaves free.

　　　农隶主不同意释放他们的奴隶。

　　　I’ll never forget the day when we were set free.我永远不会忘记我们获得自由的那一天。

　　3.As a child he used to work hard and help his father on the small farm where they lived.他童年的时候就在他们的住的农场辛勤劳动，帮他父亲干活。

　　　as在句中是连词。作“当……时候”解。as a child可看作是as he was a child的简略形式。例如：

　　　As a child (As he was a child =When he was a child )Edison used to make experiments in his own Lab.当爱迪生还是个小孩子的时候，他常在自己的实验室里做实验。

　　　As a young man (As he was a young man=When he was a young man )he worked in a store and later in a post office . 年轻的时候；他在一家商店做过事，后来又在邮局工作过。

　　　I heard a cry for help as I was crossing the street.我在过马路的时候，听到一阵呼救声。

　　　as也可以用作介 词，作“作为”，“当作”解，例如：

　　　He worked as a tour guide for three years.他做过三年导游工作。

　　　As a teacher, I’d like to give you some advice. 作为老师，我想给你们提点建议。

　　　This stick can be used as a walking stick.这根本棍可以当作手杖来使用。

　　4.She did all she could to help him. 她做了她所能做的一切来帮助他。

　　　句中She could是一个定语从句，修饰先行词all。关系代词that在定词从句中作宾语，因此可以省略。could后面的do ,因避免与主句的谓语动词did重复，也省略了。 此句的完整形式应是：She did all (that) she could(do ) to help him.这句还可改写成：she did what she could to help him.意思同上句一样，没有差别。但what she could是宾语从句，作did的宾语。

　　5.He spent very little time at school , perhaps no more than a year in all.

　　　他在学校读书的时间很短，可能总共还不到一年。

　　　1)little是不定代词，作“很少”，“几乎没有”解，后跟不可数名词，表否定意思。而a little则表示“有一点”表肯定的意思，例如：

　　　There is little water is the little.瓶子里几乎没有什么水了。

　　　There is a little water in the bottle.瓶子里还有一点儿水。

　　　I have very little time for reading every day.我每天几乎没有什么时间看书。

　　　I have a little time for reading every day. 我每天还有一点儿时间用来看书。

　　　2)no more than相当于only，意思是“不过是”、“仅仅”。not more than是“不多于……”、“不超过”的意思，例如：

　　　It took him no more than(only) two hours to finish this work.他只花了两个小时就完成这项工作。

　　　I have no more than(only) two friends in shanghai.我在上海只有两个朋友。

　　　There are not more than fifty students in each class. 每个班的学生人数都不超过50人。

　　　3)in all作“总共”解，相当于altogether。例如：

　　　I spent two hundred yuan on these books in all.我买这些书总共花了200元。