終止性動詞不與一段時間狀語連用

■由于終止性動詞發生或存在的時間很短，有時甚至只是一個概念，因此它不能與一段時間連用。如：

他參軍10年了。

誤：He joined [went into] the army for ten years.

正：He joined [went into] the army ten years ago.

正：He has been in the army for ten years.

正：He has been a soldier for ten years.

終止性動詞如come, go, join, leave, buy, see, finish, hear, appear, die等。

一段時間如five minutes, half an hour, three days, one week, two years等。

■偶爾見到終止性動詞與一段時間連用，那么它表示的一定是指終止性動詞所表示的動作結束后所持續的一段時間，如：

He has come here for a week. 他已來了，準備呆一個星期。

若要表示“他已來了一個星期”，則說：

He has been here for a week. / It is a week since he came.