我给他寄去了五封信，一封回信也没收到。

I sent him five letters without receiving a single answer.

youdao

到目前为止，我已经收到他五封信。

So far, I have already received his letter of 5.

youdao

到目前为止，我已经收到他五封信。

So far, I have already received his letter of 5.

youdao