(
课件网) BY YUSHEN Unit 3 Fit for life Grammar and usage BY YUSHEN Exploring the rules 01 BY YUSHEN Hook hands and wooden legs have become almost mandatory traits for pirate captains. These are the early prostheses. BY YUSHEN Prostheses have been developing with technological advances. Now athletes can run with prostheses. Do you know how people control artificial limb BY YUSHEN Robotic limbs has really changed many people's life. Below is a personal account given by a girl who is equipped with a robotic hand. Find the sentences that use the present perfect continuous tense and fill in the box below. The first one has been done for you. BY YUSHEN BY YUSHEN Before having the new robotic hand ·The girl began to (1) _____ after losing her right hand in a car accident two years ago. ·The old artificial hand could not help her because (2) _____. With the new robotic hand ·The girl can (3) _____ and hold on to small things. The new robotic hand is capable of (4) _____. The new robotic hand looks very lifelike with (5) _____. Over the past three months The girl has rediscovered old hobbies. The girl has become more (6) _____. Read and fill the table. withdraw into herself she could not do simple things like getting dressed move her individual fingers feeling varying degrees of pressure special rubber used on the outside confident and outgoing BY YUSHEN Scientists have been making great progress in robotic technology in recent years, … Over the past three months I have been testing out the limits of what I can do with my new hand,... ..., I have been cooking for my family again since I got my new hand. BY YUSHEN Scientists have been making great progress in robotic technology in recent years, … Over the past three months I have been testing out the limits of what I can do with my new hand,... ..., I have been cooking for my family again since I got my new hand. the present have/has been doing BY YUSHEN 现在完成进行时 02 BY YUSHEN BY YUSHEN 现在完成进行时的构成 现在完成时 现在进行时 现在完成进行时 + = BY YUSHEN 现在完成进行时的构成 be+v-ing have/has +been+ v-ing have/has+done + = BY YUSHEN 例句 1. What have you been doing all this time 这半天你干什么来着？ 2. I have been waiting for my girl friend for half an hour, but she has not shown up yet. 我一直在等我女朋友，已等了半小时，但她仍没露面。 3. She has been travelling in Asia since then. 从那时起她一直在亚洲旅行。 4. How long have you been living here 你在这儿住了多久了？ BY YUSHEN 现在完成进行时的用法 Now Past Future 表示动作从过去某时开始，一直延续到现在，将来还可能延续下去，强调动作的延续性。 1. I have been waiting for an hour, but she hasn't come yet. 我都等了一个小时了,但是她还没来。 2. He is ill. He’s been lying in bed for three weeks. 他病了。已卧床3个星期。 BY YUSHEN 现在完成进行时的用法 Now Past 表示从过去某时开始到现在这一段时间内动作一再发生。 1. She has been phoning Jim every night for the past two weeks. 两个星期以来，她每天晚上都 ... ...
