Unit4 Learning about Language 现在完成进行时课件-2022-2023学年高中英语人教版选择性必修第三册

B6U4 A Successful Failure -- Grammar -- Present Perfect Continuous Tense（现在完成进行时） Observe and discover 1. This is the adventure that I have been dreaming of. 2. We have been struggling for days, but things on Elephant Island are going from bad to worse. 1. 现在完成进行时态的构成：肯定形式：　　　　　　　　　　　 。 否定形式：___________________________________。 2. 现在完成进行时表示动作开始于过去，并　　　　　　　　到现在，动作 可能　　　　　　　　，也可能　　　　　　。 have/has＋been＋doing have/has＋not＋been doing 一直持续 仍在进行 刚结束 一、现在完成进行时的构成 ① I have been reading Hemingway’s Farewell to Arms recently. ② She has been reciting the words all the morning,now I can dictate them. ③ This is what I have been expecting since my childhood. 二、 现在完成进行时的用法 1.表示动作从过去某时开始，一直延续到现在,强调动作从一开始后的不间断。 现在完成进行时常和all this time，this week，this month，all night， all the morning，recently 等状语以及since和for引导的状语连用。 2.表示动作刚刚结束，一般有明显的效果暗示之前动作的不间断。 ①My clothes are all wet. I’ve been working in the rain. ②He is dead drunk. He’s been drinking with his friends. 3.表达感概、赞许等感情色彩。 ①What have you been doing to my dictionary? ②Too much has been happening today! 今天真是一个多事之日。 单句语法填空 ① The Chinese government 　　　　　　　　　 (do) research into vaccine against EHF for months，and recently many have received the first doses. ② The dollar 　　　　　　　　　　 (climb) steadily all week. ③ I 　　　　　　　　　　 (wait) for an hour and a half. ④ Jim 　　　　　　　　　　 (phone) Jenny every night for the past week. ⑤—You are a great swimmer. —Thanks.It’s because I 　　　　　　　　　　 (practise)a lot these days. has been doing has been climbing have been waiting has been phoning have been practising ①They have been widening the road，which will be completed in two months . 他们在加宽马路。(尚未完成) ②They have widened the road. 他们加宽了马路。(已经完成) ③Have you been meeting him recently？ 你最近一直见他吗？ (强调动作重复) ④Have you met him recently？ 你最近见到过他吗？(表示结果) ⑤Where have you been？We have been looking for you everywhere. 你到哪里去了？我们到处在找你。(表示不满或担心) ⑥We have looked for him，but haven’t found him. 我们找过