speak volumes

意味

to show something very clearly without words

言葉を使わずに何かをはっきり示す.

例文

1. 1The fact that he never phones his mother speaks volumes about him.
2. 2Her quiet smile spoke volumes; she had clearly got the job.
3. 3The empty restaurant on a Saturday night speaks volumes about the food.
4. 4Nobody replied to Tom's email about the party, which spoke volumes.
5. 5Doesn't it speak volumes that three managers have left in one year?

文法

主語は事実や行動で、話し手ではない。変わるのは speak だけ：speaks、spoke。示す内容の前に about か for を置く。