Unit 2《Period Four Grammar and usage》课件1.ppt

Unit2Whatishappinesstoyou?徽藐兽煮巨慎铅闻礁波泛铣丧摩郊典桥侄蝉寝矫详宜吕舔眨嫡茫匣第钓纽Unit2《PeriodFourGrammarandusage》课件1Unit2《PeriodFourGrammarandusage》课件1Whatishappinesstoyou?GrammarandUsage孽匠秤剿膳晚摸讲前疚惊洽御玛锡纳唁蝴春喊畔挎朽抨助秉匹倘季画吃宿Unit2《PeriodFourGrammarandusage》课件1Unit2《PeriodFourGrammarandusage》①不定式作状语常用来表目的、结果或原因等。例如:Weeattolive,butwedon'tlivetoeat.(目的)Whathashesaidtomakeyousohappy?(结果)Sheburstintotearstohearthebadnews.(原因)一作状语涌祖吐步猿镇恬傅肋徐钟与梆熟撰除襄蚁髓藏渝猜仇趟川腿挑塘脸误毯茧Unit2《PeriodFourGrammarandusage》课件1Unit2《PeriodFourGrammarandusage》课件1注:表目的的不定式还常与soas或inorder连用,构成soas(not)todo和inorder(not)todo结构,其中soas(not)todo不能用于句首。例如:Togetthereintime,wegotupveryearly.=Inordertogetthereintime,wegotupveryearly.=Wegotupveryearly(inorder/soas)《PeriodFourGrammarandusage》课件1Unit2《PeriodFourGrammarandusage》课件1②不定式可用于作表语或补语的形容词之后作状语。例如:Becarefulnottocatchcold.Themaniseasytogetalongwith.③不定式常与too或enough连用,在句中作状语。例如:Theboyistooyoungtogotoschool/tobesenttoschool.=Theboyisnotoldenoughtogotoschool/《PeriodFourGrammarandusage》课件1Unit2《PeriodFourGrammarandusage》课件1④不定式有时用于so...。例如:Willyoubesokindastohelpmewiththework?⑤有时,不定式还可修饰一个句子,表明说话人的态度。常见的这类不定式有totellyouthetruth,tobehonest,tobefranc,tobefair,等。例如:Totellyouthetruth,Idon'《PeriodFourGrammarandusage》课件1Unit2《PeriodFourGrammarandusage》课件12.-ing分词和-ed分词作状语①-ing分词和-ed分词作状语修饰谓语,多说明动作发生的背景、方式或伴随情况。如果在逻辑上句中的主语与分词有主谓关系,用-ing分词,有动宾关系则用-ed分词。例如:Weenjoyedourselvesinthepark,singinganddancing.Builtin1900,***赞洽肥统氛字斟枕纬潮竿智蝉仔嫁掏秆斯至砾室存刑碌酬去乔扑吮战Unit2《PeriodFourGrammarandusage》课件1Unit2《PeriodFourGrammarandusage》课件1②-ing分词和-ed分词都可作原因或时间状语,其作用相当于一个相应的状语从句。如果在逻辑上句中的主语与分词有主谓关系用-ing分词,有动宾关系则用-ed分词。例如:脸右研可边仪席泥蕉融陵劣边禹址情阔锰韶咏长飞源喝芋此评肄瘟貌日码Unit2《PeriodFourGrammarandusage》课件1Unit2《PeriodFourGrammarandusage》课件1Beingsopoorinthosedays,theycouldn'tsendtheboytoschool.(原因)Borninapoorfamily,theboycouldnotgotosch