Unit 2 Discovering useful structures 课件-2022-2023学年高中英语人教版（2019）必修第三册.pptx

Review the useful structure in the last unit这个电影又感人又有趣This film is moving and interesting.V-ing as the predicative(表语)Review the useful structure in the last unit这个正在微笑的女孩在雪地里翩翩起舞。The _______ (smile) girl is dancing in the snow.V-ing as the attribute(定语)smiling1 ... her brother complained, thinking of the high tuition fees.2 Thinking of all the people still in need of help, Dr Lin opened aprivate clinic.3 The new Peoples Republic of China saw Dr Lin Qiaozhi playing a key role.her brotheradverbial（状语）Dr Linadverbial（状语）Dr Lin Qiaozhiobject complement（宾语补足语）Conclusion: 现在分词(v-ing)作状语，其动作发出者是主句的_____, 呈___(主/被)动关系。一般置于_____或______。现在分词(v-ing)作宾语补足语，常放在宾语后面, 对宾语进行补充说明表示一个____________________的动作, 强调一个过程或一种状态。主句首句尾主语正在进行的主动性Read and discuss the functions and meanings of the -ing form.现在分词用作状语The –ing form as the Attributive请同学们自主阅读《三二》P34，找出现在分词作状语的类型 现在分词作状语（修饰动词）时, 可表时间、原因、条件、方式、伴随、让步等情况。-ing形式作状语公式Doing sth, 主句.= When(While) +从句，主句作时间状语Doing sth, 主句.= Because(As) +从句，主句作原因状语Doing sth, 主句.= Although (Though) +从句，主句作让步状语 主句,doing sth,= 句子1+ and 句子2.作方/伴状语 主句, （thus）doing sth,= 句子1; as a result, 句子2.作结果状语1. He stood by the piano, ___________（listen） for the first time to his own work being played by someone else.listeningSeeing2. _________（see） a cat, the mouse ran off quickly.误区警示现在分词和不定式作结果状语的区别现在分词常表示随着谓语动词的发生而产生的自然结果,其逻辑主语往往是前面整个句子所描述的情况,前面有时候可以加thus不定式常表示出乎意料的结果,有时前面可以加only6.作评注性状语有些现在分词在句中没有逻辑主语,它们往往作为句子的评注性状语来修饰整个句子,表明说话者的态度、观点等。如：generally speaking一般来说, judging by/from...从……判断,taking everything into consideration总的来说。Judging from his behaviour, he must be mad.从他的行为来判断,他一定是疯了。3. It rained constantly for a whole day, completely__________（ruin） our plan for an outing.ruining7.现在分词的时态现在分词作状语时,要注意分词的时间性,是用现在分词的一般式（doing）,还是用完成式（having done）。（1）当现在分词的动作与谓语动词的动作同时发生或几乎同时发生时,用分词的一般式。Walking in the street, I met an old friend of mine.我正在大街上行走时,遇到了一位我的老朋友。（Walking和谓语动词met同时发生）（2）当现在分词的动作先发生,而谓语动词的动作后发生时,用分词的完成式。Having finished the letter, he went to post it.他写完信后就把它寄了出去。