我剛寫了一封信。
I just wrote a letter.
Listen to pronunciation
Example sentences
我給他寫了一封信，但他還沒回覆。
我给他写了一封信，但他还没回复。
I wrote him a letter, but he hasn't replied yet.
這封信附了一張照片。
This letter has a photo attached.
他將這封信寄了出去。
He sent this letter out.
你這封信寄錯了地址，害我白跑了一趟。
You sent this letter to the wrong address, which caused me to make a trip for nothing.
Usage Notes
Most commonly used as a measure word for letters or packages.
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