to acknowledge his letter意思是表明已受到他的来信 请举几个例子把！！～～

We must acknowledge his letter.
我们必须说明收到了他的来信。

We acknowledge his right to vote.
我们承认他有选举权。

I acknowledge your letter.
来函敬悉。

We beg to acknowledge receipt of your letter dated August 1st.
8月1日的来信已收阅。

This is to acknowledge with thanks your letter of 30th ult.
兹确认收到贵方上月30日函，谢谢。

We have the pleasure to acknowledge receipt of your letter dated February 1,1997.
一九九七年二月一日尊函敬悉。

I wrote him a letter to acknowledge the receipt of the book he sent me.
我给他写了一封信，表示收到了他寄来的书

This is to acknowledge receipt of your letter; I shall reply in full as soon as possible.
兹确认收到你的来函，我将尽快详细答复。

He still not acknowledge my letter of the 24th.
他仍未确认收到我24日的信件。