新概念1里101课,有问题不明白?

发布网友发布时间：2022-05-01 21:40

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热心网友时间：2022-06-23 22:17

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 sted 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)