高二必修5 Unit 3 Life in the future语法及重点解析.doc

Unit3 重难点解析1. Worried about the journey, I was unsettled for the first few days. ( Reading)Spreading some food on the table, she produced a bed from the floor. (Reading)Worried about- 为过去分词短语作状语，表示原因，相当于 As I worried about ; Spreading some food 为 ing 形式作时间状语。相当于After she spread some food 动词过去分词和在句子中作状语时，其逻辑主语必须与句子的主语一致。一般来说，如果动词所表示的动作与句子的主语之间是主动关系，就用形式作抓过状语；如果是被动关系就用过去分词作状语。如：1) Entering the office ( = As soon as she entered the office), she shut the odor behind her.她一进办公室，就把门关上了。2) Given more time ( = If we are given more time), we can finish the work successfully.如果再多给我们一点时间，我们就可以成功的完成这项工作。2. My first visit was to a space station considered the most modern in this part of space.considered the most modern 是过去分词作后置的定语。一般来说单个的过去分词作定语时，置于所修饰的词之前；过去分词短语作后置定语时，置于所修饰的词之后。过去分词作定语还要注意以下两种情况。） 如果修饰的词是等，过去分词要放在所修饰词后。 There is almost noting changed since I left the town tow years ago.从我两年前离开这个镇以来，这里几乎没有任何变化。） 过去分词短语有时也可以用作非限制性定语，后面有逗号。如： Some of them, born and brought up in rural villages, had never seen a train.3. Neither of these creatures is easy to talk to. (Using Language)“sb. /sth. + be + 形容词+不定式”是一个固定的句型，其中动词不定式与句子的主语是动宾关系，不定式用主动式。能用这个巨型常用的形容词有difficult, hard, easy, interesting , fit ,important, nice 等。The picture is pleasant to look at.这张画很好看。The water here is not fit to drink. 这儿的水不适宜饮用。He is hard to deal with.他很难对付。过去分词作状语的用法关于过去分词作定语,我们在第九单元曾做过详细介绍，这里主要讲解过去分词作状语的情况。过去分词表示被动，表示动作已经完成。作状语时，可单独使用，也可以在其连词的前面加上适当的连词表示时间、原因、条件、结果、伴随、方式等。1.过去分词作原因状语 Greatly inspired by the teachers words, I have made up my mind to work to English n h even harder。 在老师的鼓励下，我决心更加努力地学习英语。 Greatly moved by the film, they all cried. 他们看了那部电影深受感动，都哭了。 Surrounded by a group of young people, the old man felt happy. 身边围着一群年轻人，老人感到很高兴。2.过去分词作状语，表示伴随情况或方式。 The trainer appeared, followed by six little dogs. 训练员出现了，后面跟着六条小狗。 He walked up and down the room, lost in thought. 他在屋子时走来走去，陷入了沉思。 Filled with extraordinary strength, he raised himself. 他使出全身的力气站了起来。3.过去分词作状语,还可以表示: Given much ti