河北省涿鹿县涿鹿中学高二上学期英语课件：必修五 UNIT3-GRAMMAR1 .ppt

1、looking-back翻译：1.这部电影让我想起了我的童年。（remind)2.植物因缺水而死亡。(lack)3.我们不应该忽略会议的主要目的.(lost sight of)4.他表现得好像什么事都没发生一样。(as if/though)q Observe the following sentences and answer questions:q(I)Written in a hurry,this article was not so good!Hit by the lack of fresh air,my head ached.过去分词作_表示_和_的动作。状语被动的完成()Lost/i

2、n deep thought,he didnt hear the sound.Worried about the journey,I was unsettled for the first few days.值得注意的是，有些过去分词因来源于系表结构，作状语时不表被动而表主动。这样的过去分词及短语常见的有：lost（专注于）；tied（厌烦）；exhausted（筋疲力尽）；worried（担心）；astonished(惊讶）；moved(感动）；surprised;excited,etc.2.过去分词作状语时其逻辑主语为主句的主语，此时应注意人称一致。Seen from the top of

3、 the hill,the city looks more beautiful to us.Seeing from the hill,we find the city very beautiful.3.过去分词作状语来源于状语从句。(1)Caught in a heavy rain,he was all wet.因为淋了一场大雨，所以他全身湿透了。Because he was caught in a heavy rain,he was all wet.(2)Grown in rich soil,these seeds can grow fast.(grown in rich soil 为过去分

4、词作条件状语，它来源于条件状语从句If these seeds are grown in rich soil.如果种在肥沃的土壤里，这些种子能长得很快。【注意】状语从句改成过去分词作状语时有时还可保留连词，构成“连词过去分词”结构作状语。When givena medical examination,you should keep calm.当你做体格检查时要保持镇定。4.过去分词作状语的位置。过去分词可放在主句前作句首状语，后面有逗号与主句隔开；也可放在主句后面，前面有逗号与主句隔开。He stood there silently,moved to tears.=Moved to tears

5、,he stood there silently.他静静地站在那里，被感动得热泪盈眶。Rewrite with proper conjunctions1.United we stand,divided we fall.Example:If we are united,we will stand,but if we are divided,we will fall.2.Asked what had happened,he told us about it.3.Well known for his expert advice,he received many invitations to give

6、 lectures.When he was asked what had happened,he told us about it.Because he was well known for his expert advice,he received many invitations to give lectures用过去分词作状语来改写句子。1)When he was questioned by the police about the fire,he became tense._ _,he became tense.Questioned by the police about the fi

7、re2.If he is given more time,hell make a first-class tennis player._ ,hell make a first-class tennis player.3)As I was confused by the new surroundings,I was hit by the lack of fresh air._,I was hit by the lack of fresh air.Given more timeConfused by the new surroundings1._the old man,we went upstai

8、rs.we followed (跟着那个老人,我们上去了)2._by the old man,we went upstairs.(we were)(被那个老人跟着,我们上去了)CompareFollowingFollowedDifference between the Present Participle and the Past Participle_for a long time,the book looks old.由于用了很长时间，这本书看上去很旧._ the book,I find it useful.在使用的过程中，我发现这本书很有用._(look)at her,he jumped with joy._(look)at by her,he jumped with joy.UsedUsingLookingLooked注意：选择现在分词还是过去分词，关键看主句的主语。如分词的动作是主句的主语发出，分词就选用现在分词，反之就用过去分词。