Unit 4 突破·语法大冲关 同步教材讲解(2020新外研版)英语必修第二册.doc
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1、 动词- ing 形式作状语 一、动词- ing 的具体形式 观察例句 They sat in the classroom,reading the books borrowed from the library. I stood there motionless,not knowing what to do. Having succeeded in the test,he became more confident. Not having finished his homework,the boy was still doing it in the classroom. Having been
2、 told several times,he still couldnt understand how to operate the machine. 归纳用法 (1)动词- ing(以 do 为例)从形式上可分为一般式(doing)与完成式(having done),其被动式分别为 being done 与 having been done。 (2)动词- ing 形式的一般式作状语, 表示的动作与谓语动词所表示的动作同时 或相继发生,其否定式为 not doing。 (3)动词- ing 形式的完成式作状语, 表示的动作发生在谓语动词所表示的动作 之前。其否定式为 not having b
3、een done。 即学即练 1 完成句子 由于我已经完成了所有的工作,我就坐下来休息一会儿。 Having finished all my homework,I sat down to have a rest. 这个男孩坐在门口,等着他妈妈回来。 The boy sat by the door,waiting for his mother to return 没有被邀请,她感到非常不愉快。 Not having been invited, she felt very unhappy. 二、动词- ing 形式作状语的具体情况 1时间状语 观察例句 Walking in the park,sh
4、e came across an old friend. You should never take a chance while driving a car. 归纳用法 动词- ing 形式作时间状语时, 相当于时间状语从句, 有时可在前面加上 when 或 while。例的 WalkingWhen she was walking。 即学即练 2 用括号内动词的适当形式填空 Hearing(hear) the good news,he jumped with joy. Having finished(finish) his summary,he went out for a walk. Wh
5、en approaching(approach) a crossroad,you must be careful. 2原因状语 观察例句 Not knowing his address,I couldnt call on him. Having eaten at the cafeteria before,Tina didnt want to eat there again. Being well taken care of,she recovered quickly. 归纳用法 动词- ing 形式作原因状语时,相当于原因状语从句。例的 Not knowing Because I didnt
6、know 即学即练 3 用括号内动词的适当形式填空 Being(be) ill,he couldnt book the flight. Having lived(live) in the city for many years,I knew it well. Having been asked(ask) to work overtime that evening,I missed a wonderful film. 3伴随或方式状语 观察例句 He sat in the armchair,reading a newspaper. He suddenly appeared in class on
7、e day,wearing sunglasses. 归纳用法 动词- ing 形式作伴随或方式状语时,可以转换成并列成分。例的 reading and read 。 即学即练 4 用括号内动词的适当形式填空 When I was little,my mother used to sit by my bed,reading(read) me stories till I fell asleep. She lay on the grass feeling(feel) depressed about the whole situation. 4. 条件状语 观察例句 Turning to the l
8、eft,you will find a path. Taking more exercise,youll become stronger and healthier. 归纳用法 动词- ing 形式作条件状语时,相当于条件状语从句。例的 TurningIf you turn。 即学即练 5 一句多译 努力学习,你就会通过这次考试。 Working hard,you will pass the exam.(动词- ing 形式作状语) If you work hard,you will pass the exam.(条件状语从句) Work hard,and you will pass the
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