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1、Period ,Grammar,过去分词用法()：作状语和定语 Worried about the journey, I was unsettled for the first few days. Exhausted, I slid into bed and fell fast asleep. Soon I was back on my feet again and following him to collect a hovering carriage driven by computer. I found later that their leaves provided the room
2、with much-needed oxygen.,一、过去分词作状语,过去分词有两大特点：一是表示被动；二是表示动作已完 成。过去分词作状语修饰谓语动词，说明动作发生时的背景或 状况，其逻辑主语通常是句子的主语。过去分词(短语)常可作 以下几种状语：,1时间状语：可转换为时间状语从句，也可在过去分词前 加上连词 when, while, until 等，使其时间意义更明确。如：,Seen from the hill, the surroundings of these villages look,very beautiful.,(When they are seen from the hill
3、, the surroundings of these,villages look very beautiful.),从山上看，这些村庄的环境非常美丽。,2原因状语：可转换为 as, since, because 等引导的原因状,语从句。如句可转换为：,As/Since I was worried about the journey, I was unsettled for,the first few days.,因为担心这次旅行，头几天我心里总是不踏实。,As/Since I was exhausted, I slid into bed and fell fast asleep.,由于太累了
4、，我爬上床很快就睡着了。,3条件状语：前面可加连词 if, unless 等，也可转换为条件,状语从句。如：,Given more attention, the cabbages could have grown better.,(If they had been given more attention, the cabbages could,have grown better.),多花些精力，这些卷心菜会长得更好。,4 让 步 状 语 ： 有 时 可 加 although, though, even if, even though, whether.or. 等连词，也可转换为让步状语从句。
5、如：,Though warned of the storm, the farmers were still working in,the fields.,( Though they had been warned of the storm, the farmers,were still working in the fields.),虽然农民已被警告将有暴风雨，但他们仍在地里干活。,This material doesnt expand whether heated or not.,(This material doesnt expand whether it is heated or not
6、.)这,种物质无论加热与否均不膨胀。,5方式状语：若有连词 as if，可转换为 as if 引导的方式状,语从句；若无连词，可转换为并列结构。如：,He began to cry as if bitten by a snake.,(He began to cry as if he was bitten by a snake.) 他大叫起来，好像被蛇咬了。 “She is right，” he said, pleased.,(“She is right，” he said, and he was pleased.) 他高兴地说：“她是对的。”,6伴随状语：一般可转换为并列结构。如：,The t
7、eacher entered the classroom, followed by a group of his,students.,(The teacher entered the classroom, and he was followed by,a group of his students.),老师走进教室，后面跟着一群学生。,二、过去分词作定语,过去分词作定语多表示已完成的动作，还可表示被动。当 作定语时，单个分词一般放在所修饰的名词之前，如句；分 词短语则必须放在所修饰的名词之后，相当于一个定语从句， 如 句 中 的 driven by computer that/which wa
8、s driven by computer。,一、用所给单词的适当形式填空,1What about the speech _ (give) by the president,last night?,Wonderful.,2 _ (ask) why she gave up her well-paid job, Miss,Green said that she wanted to be a primary school teacher.,3 When first _ (introduce) to the market, these,products enjoyed great success.,4
9、If _ (keep) for too long, some medicine will lose,given,Asked,introduced,kept,their effectiveness.,5 _ (face) with so much trouble, we failed to,complete the task on time.,6 We are going to put forward the suggestion _,(discuss) at the last meeting.,7 It is known to all that the United States is the
10、 most,_ (advance) country in the world.,8Some of them, _ (bear) and _ (bring) up in,the small village, had never seen a train.,9 Though _(defeat) by the young player for the,second time, he didnt lose heart.,Faced,discussed,advanced,born,brought,defeated,10_ (absorb) in the research work, he had no
11、time to,take part in any activities.,11The _ (injure) workers are taken good care of in,the hospital.,12The students have swept up the _ (fall) leaves.,Absorbed,injured,fallen,二、将下列从句改为过去分词短语作状语,A时间状语,1Generally speaking, when the drug is taken according to the,directions, it has no side effect.,_ _
12、,2 When the sunrise was seen from the top of Mount Tai, it,was indeed a spectacle.,_ _,Generally speaking, taken according to the directions, the drug has no side effect.,Seen from the top of Mount Tai, the sunrise was indeed a spectacle.,B原因状语,3Since we are greatly encouraged by what the teacher sa
13、id,we have made up our mind to study even harder.,_ _,4As she was given advice by the famous detective, the young,lady was no longer afraid.,_ _,Greatly encouraged by what the teacher said, we have made up our mind to study even harder.,Given advice by the famous detective, the young lady was no lon
14、ger afraid.,C条件状语,5If we are united, we will overcome any trouble.,_,6 If I had been given more time, I would have solved the,math problem.,_,If united, we will overcome any trouble.,Given more time, I would have solved the math problem.,D让步状语,7Though he was left alone at home, Sam did not feel afraid,at all.,_,8 Though he has been encouraged by his parents several,times, he still has no confidence in overcoming the
