1、He has turned off the light. 他已把灯关了。
2、Have you found your pen yet? 你已找到你的钢笔了吗？ 3、He has lived here since 1978. 自从1978年以来，他一直住在这儿。
4、I have been in the army for more than 5 years. 我在部队。
现在完成时的用法： 1、未完成用法：表示过去的动作或状态持续到现在，并且有可能继续持续下去，也有可能到此结束，在这种用法中，谓语动词必须是持续性动词； e.g. He has waited for his girlfriend in the restaurant for 3 hours. 他在餐厅。
1. He has turned off the light. 他已把灯关了. 2. Have you found your pen yet?你已找到你的钢笔了吗? 3. He has lived here since 1978.自从1978年以来,他一直住在这儿. 4. I have been in the army for more than 5 years.我在部队已经呆了。
514917837 你好！ 希望我的资料可以帮助你！ 现在完成时 现在完成时用来表示之前已发生或完成的动作或状 态，其结果的确和现在有联系。
动作或状态发生在过去 但它的影响现在还存在；也可表示持续到现在的动作或 状态。
其构成： have (has) +过去。
1. He has turned off the light.他已把灯关了。
2. Have you found your pen yet?你已找到你的钢笔了吗？ 3. He has lived here since 1978.自从1978年以来，他一直住在这儿。
4. I have been in the army for more than 5 years.我在部队已经。
