[BECP-module5.pptVIP

现在完成时 现在完成时是由 have/has＋动词的过去分词 构成的。 They have (They’ve) resigned. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. I’ve just bought a new computer. It’s only 8.30 and I’ve already answered ten telephone calls this morning! They have been colleagues since 2006. 最近已发生的动作，而且对现在有影响或有一个看得见的结果。 起始于过去，持续到现在的动作。 某段时间内的动作，还未完成。 我们用现在完成时描述： Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Have a try! 试试看! Is this sentence correct? I have worked as a bank clerk from 2000 to 2005, then left. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. KEY Did you get it right? 该句不可用现在完成时。 注意，我们用过去时描述已过去 的时间和/或已结束的动作。 I worked as a bank clerk from 2000 to 2005, then left. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Have a try! 试试看! What is the difference between the following two sentences? He’s gone to Rome. He’s been to Rome. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. KEY Did you get it right? He’s gone to Rome. ＝ 他去罗马了，现在还在罗马。 He’s been to Rome. ＝ 他去过罗马，已回来了。 （他曾经去过罗马。） Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. （1）过去时常常与表示过去的时间状语连用，如：yesterday, four years ago, last year等。而现在完成时不与以上这类时间状语连用。 比较： He has left. He left at 7 o’clock. I have tried hard. I tried hard last night. Tips：现在完成时与过去时的区别（1） Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. （2）现在完成时常常与since＋过去的时间起点，for ＋一段时间，by＋时间起点，already, yet, ever（曾经），just（刚刚）、time(s)（表示次数）等连用。 如： I have lived here since 2002. I have lived here for six years. By now I have finished two-thirds of the work. He has already gone. Tips：现在完成时与过去时的区别（2） Evaluation only. Created with Aspose.Sli