Unit 3 Fit for life Grammar and usage 课件-2022-2023学年高中英语牛津译林版（2020）选择性必修第二册

Unit 3 Fit for life P3 Grammar and usage 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. Check your answers! 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. For example, I have been cooking for my family again since I got my new hand. 4. I have been waiting for this chance ever since my accident,... the present has/have been doing Focus on 基本用法 Present Perfect Continuous Tense 现在完成进行时 ① 基本概念 ② 用法 ③ 现在完成时和现在完成进行时的区别 现在完成进行时表示动作从过去某一时间开始一直持续到现在,这个动作可能刚终止,也可能还在进行。 构成形式为主语+has/have been doing+其他。 ① Sorry, I’m late. Have you been waiting long? 对不起,我迟到了。你等了很久了吗? (动作刚终止,不再继续下去) ② The Chinese have been making paper for two thousand years. 中国有2000年的造纸历史。 (动作还将继续下去) 现在完成进行时的基本概念 1. 现在完成进行时常与表示一段时间的状语连用,例如:all the time, this week, all night, these few days, for..., since...等。 ① A private detective has been tailing him for several weeks. 一位私人侦探几个星期以来一直在跟踪他。 ② Craig loves outdoor activities- he skis in winter and has been fishing and hunting since he was a child. Craig热爱户外活动,冬天他去滑雪,他从小就开始钓鱼和打猎。 现在完成进行时的用法 ① What have you been doing this morning? You look tired. 你今天早晨干什么了?你看起来很疲惫。 ② You have been reading newspapers. Newspapers are lying everywhere in your room. 你一直在读报吧。你的房间里到处摊着报纸。 2. 现在完成进行时的动词表示一直到说话时为止的一段时间内,大部分时间都在持续进行的动作(不一定延续到说话的时候),往往这个动作与现在的状态有联系。 现在完成时和现在完成进行时的区别 1. 在不同时间状语的情况下,现在完成进行时的动作不一定已经完成,很可能持续下去,而现在完成时一般表示动作已经完成。即现在完成进行时强调动作的延续性,而现在完成时强调动作的结果。 ① I've been designing solar racing cars. 我一直在设计太阳能赛车。 ② I've designed five or six different cars. 我已经设计五六辆小汽车了。 2. 现在完成进行时与所有进行时态一样带有感情色彩,可使表达显得生动,而现在完成时往往只表明一个事实、一种影响或结果,不带感情色彩。 ① Recently Mary has been doing sports regularly. 最近玛丽一直定期做运动。(有表扬意味) ② Recently Mary has done her sports regularly. 最近玛丽定期做运动。(只说明一个事实) More and more scholars _ in Silk Road in rec