n.信號(hào)；標(biāo)志

v.(發(fā)信號(hào))通知、表示

adj.顯著的

A red lamp is often a danger signal. 紅燈常常是危險(xiǎn)的信號(hào)。

I corrected my watch by the time signal. 我按報(bào)時(shí)信號(hào)校正我的表。

I've called several times, but I keep getting a busy signal. 我打了好幾次了,可是一直是忙音。

We live too far from the city to get a strong television signal. 我們住的地方離城里太遠(yuǎn), 不能收到清晰的電視圖像。

Her speech yesterday is a signal that her view has changed. 她昨天的講話標(biāo)志著她的觀點(diǎn)已經(jīng)轉(zhuǎn)變。

The police signalled the traffic to move forward slowly. 警察向來往車輛打信號(hào)，示意緩慢前行。

The submarine signaled for help. 潛水艇發(fā)出求救的信號(hào)。

People speak of Mark Twain as a signal humourous writer. 人們稱馬克·吐溫為杰出的幽默作家。

This is a signal success. 這是顯著的成功。

signal用作及物動(dòng)詞時(shí),可接名詞、代詞或that/wh從句作賓語。signal還可接雙賓語,常以帶或不帶疑問詞的動(dòng)詞不定式作直接賓語,其間接賓語可以由介詞to引出, to可以省略。不用于被動(dòng)結(jié)構(gòu)。

signal還可用作形容詞,意思是“明顯的,(非常)顯著的,非凡的”。例如:This is a signal failure.這是明顯的失敗。People speak of Mark Twain as a signal humorous writer.人們稱馬克·吐溫為杰出的幽默作家。