中考英语专题复习——现在完成时(共38张PPT)

现在完成时 past now Yesterday , we cleaned the classroom. Now , the classroom is clean because we have cleaned it. 用法1 强调过去发生的动作对现在产生的结果或影响 1.现在完成时用来表示过去发生或已完成的动作或状态对现在造成的影响或结果,也就是说,动作或状态发生在过去但它的影响现在还存在. I have lost my wallet. (含义是:现在我没有钱花了.) Jane has just had it. (含义是:简现在不饿了.) Michael has been ill. (含义是:现在仍然很虚弱) He has returned from abroad. (含义是:现在已在此地) 2. 现在完成时可以用来表示发生在过去某一时刻一直持续到现在的动作和状态,常与表示持续的时间状语连用. 表示持续动作或状态的动词多是延续性动词。 I haven’t seen her these days. Mary has been ill for three days. I have lived here since 1998. 3. 现在完成时往往同表示不确定的过去时间状语连用,如already, yet, just, before, recently, still, lately等: He has already obtained a scholarship. I haven't seen much of him recently (lately). We have seen that film before. Have they found the missing child yet ？ 4. 现在完成时常常与表示频度的时间状语连用,如often, sometimes, ever, never, twice, on several occasion等: 　　 Have you ever been to Beijing？ I have never heard of Bunny. I have used this pen only three times. George has met that ge