现在完成进行时与现在完成时的区别还有什么时候现在完成进行时等于现在完成时比如练习题出现I（）abook用write的适当形式填改怎么填

Question

现在完成进行时与现在完成时的区别 还有什么时候现在完成进行时等于现在完成时
比如练习题出现I （）a book用write的适当形式填 改怎么填

Answer 1

区别：现在完成时 & 现在进行时 & 现在完成进行时
①当描述的动作开始于过去时间,但已结束,用现在完成时
They have built a bridge.
②当描述的动词正在发生或进行时,用现在进行时
They are building a bridge.
③当描述的动作开始于过去时间,并持续到现在时,现在完成时等同于现在完成进行时
这些句子往往都含有for和since引导的时间
They have been building a bridge.
They have been living in this city for ten years.= They have lived in this city for ten years.
I have been working here for five years.= I have worked here for five years.
【另外】
你说的那个题填什么都可以,答案不固定
可以是writes wrote am writing
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