(
课件网) Grammar and usage Present perfect continuous tense Unit 3 Fit for life Lead-in Read the personal account given by a girl who is equipped with a robotic hand and fill in the following table. Page 34 Read and complete the table. 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 much 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. _____ withdraw into herself it didn't feel like part of her move her individual fingers feeling varying degrees of pressure special rubber used on the outside confident and outgoing be equipped with withdraw into oneself lead a normal life hold on to more amazingly be capable of doing sth. be grateful for ... open up new possibilities Useful Expressions 装备有，配备有 离群索居 过正常的生活 抓住不放；握住；控制 更加令人惊异的是 有能力做某事 因......而感激 开启新的可能性 Find the sentences using the present perfect continuous tense. 1. Scientists have been making great progress in robotic technology in recent years, ... 2. Over the past three months I have been testing out the limits of what I can do with my new hand, ... 3. ..., I have been cooking for my family again since I got my new hand. A Exploring the rules We use the present perfect continuous tense to talk about an action that started in the past and is still continuing now, or an action that has just finished but is still connected with (1)_____ (the past/ the present/ the future) in some way. The verb form of the present perfect continuous tense is “(2)_____ ”. the present has/ have been doing Working out the rules Go through the grammar notes on page 99. Working out the rules Fill in the blanks with proper and correct forms of the verbs. 1. Since last month, George, along with some of his former classmates, _____ (desire) to have a 20-year gathering during this summer holiday. 2. The number of visitors _____ (rise) steadily since the reopening, despite a sharp decline compared to normal years. 3. A recent study has found that the number of smokers _____ (increase) sharply over the past five years. 4. We _____ (try) to make our environment more beautiful since the time humankind started gardening. has been desiring has been rising has been increasing have been trying Practice 5. Today I _____ (photograph) a crocodile swimming close to our boat, the Kimberley Quest, all day. 6. Mr. Smith _____ (overwork) these days. I think he should take a holiday before he burns out. 7. Since arriving in space, the WISE telescope _____ (circle) the Earth, held by gravity in a polar orbit (this means it crosses close to the north and south poles with each lap(一圈). ... ...
