写出下列单词的现在时与过去时。
III. Write out the present tense words and past tense words.
现在完成时与一般过去时所表示的动作或状态都发生在过去，区别…
Comparison Compare the difference between the simple past tense and the present perfect tense.
现在完成时与一般过去时所表示的动作或状态都发生在过去，区别…
Comparison Compare the difference between the simple past tense and the present perfect tense.
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