新概念英语第一册课后练习题及答案：85-86.docx

精品文档，仅供学习与交流，如有侵权请联系网站删除新概念英语第一册课后练习题及答案：85-86 Written exercises 书面练习A Look at these two sentences. 注意以下两个例句。She has already aired the room. She aired it this morning. In which of these sentences can we put has? 在下面的句子中有一般过去时和现在完成时两种不同的时态。选出现在完成时的句子，并填上has。1 She _ just boiled an egg. 2 She _ boiled it a minute ago. 3 She _ never been to China, but he was there in 1992. 4 He _ already painted that bookcase. 5 He _ painted it a week ago. 6 She _ emptied the basket this morning. 7 He _ just dusted the cupboard. B Rewrite these sentences. 模仿例句改写以下祈使句。Example：Air the room! (this morning) I've already aired the room. I aired the room this morning. 1 Clean your shoes! (last night) 2 Open the window! (an hour ago) 3 Sharpen your pencil! (a minute ago) 4 Turn on the television! (ten minutes ago) 5 Boil the milk! (yesterday morning) 6 Empty the basket! (yesterday) 7 Ask a question! (two minutes ago) 8 Type that letter! (this morning) 9 Wash your hands! (five minutes ago) 10 Walk across the park! (an hour ago) 11 Paint that bookcase! (a year ago) 12 Dust the cupboard! (this afternoon) 答案： Lesson 861 She has just boiled an egg.3 She has never been to China, but he was there in 1992.4 He has already painted that bookcase.7 He has just dusted the cupboard.1 I've already cleaned my shoes. I cleaned my shoes last night.2 I've already opened the window. I opened the window an hour ago.3 I've already sharpened my pencil. I sharpened my pencil a minute ago.4 I've already turned on the television. I turned on the television ten minutes ago.5 I've already boiled the milk. I boiled the milk yesterday morning.6 I've already emptied the basket. I emptied the basket yesterday.7 I've already asked a question. I asked the question two minutes ago.8 I've already typed that letter. I typed that letter this morning.9 I've already washed my hands. I washed my hands five minutes ago.10 I've already walked across the park. I walked across the park an hour ago.11 I've already painted that bookcase. I painted that bookcase a year ago.12 I've already dusted the cupboard. I dusted the cupboard this afternoon.【精品文档】第 3 页