hammer是可數名詞還是不可數名詞

He broke into the old man's house and bludgeoned him with a hammer

他闖進了老人的房子，用鐵錘猛擊老人。

He was chipping away at the rock with a hammer.

他在用鐵錘把那塊岩石一小塊一小塊地敲下來。

The decision is a hammer blow for the steel industry.

這一決定對於鋼鐵業是一個沉重的'打擊。

The judge brought his hammer down on the table.

法官在桌子上敲下他的木槌。

I could hear somebody hammering next door.

我能聽到隔壁有人在錘打東西。