过去式与现在完成式I have written three letters to him,he did not retu

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过去式与现在完成式
I have written three letters to him,he did not return
和
I written three letters to him,he have never returned.
哪一句是正确的?区别在哪里?

I have written three letters to him,he did not return
现在完成时是在现在以前已经完成的事,强调对现在的影响.一般,现在完成时的事是发生在过去时之前的.
另外,i written three letters to him本身就是不对的,written是过去分词,不可以和主语单用
再问：那i wrote three letters to him,he did not return这句对不对
再答：这个句子可以，但是不如I have written three letters to him,he did not return时态清晰，语气明确。可以翻译成我都已经给他写了三封信了，但是他还是没有回音。后来那句语气就没有那么强烈了。但是不管是哪个句子，中间最好加个but，因为这是两个句子，中间用逗号就要有连接词。

过去式与现在完成式I have written three letters to him,he did not retu 英语翻译I have written three letters,he was never answered.I wro 英语翻译I have not written many letters to you before ,as we hav I have to read letters written in pencil i have written him several letters but I have never received 英语翻译I have written to your dad also,did he receive my email? He does not eat very much,does he?改现在进行时,一般过去式,现在完成式,将来时,过去将 I did not want to tell him the secret but he f___ me to do s I have written six letters to Joe since then.(改为被动句) Six let 英语翻译Not untl I waved to him again and again did he see me. 英语翻译1.i explained the problem to him,but he did not believe i asked him more than that question ,but he did not reply to