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一、现在完成时的基本用法。现在完成时的基本用法有以下两点:1.表示过去发生的某一动作对现在造成的影响或结果。例如:He has lost his bike.他的自行车丢了。(他现在没有自行车了。)Have you found your little son?你找到你的小儿子了吗?(你小儿子现在是否在。)2.表示某一动作或状态从过去开始一直持续到现在,有可能会持续下去。例如:
First, the basic usage is now completed. The basic usage now completed is as follows: 1. Indicates the impact or result of an action in the past on the present. For example: He has lost his bike. (He does not have a bike right now.) Have you found your little son? Did you find your youngest son? (Your youngest son is now.) 2. Indicate that an action or state has lasted from the past to the present May continue. E.g: