warn的用法和短語例句

warn有警告;告誡;預先通知等意思，那麼你知道warn的用法嗎?下面跟着本站小編一起來學習一下，希望對大家的學習有所幫助!

　　warn的用法大全：

warn的用法1：warn的意思是“警告,告誡”,強調及時發現正在來臨的或可能發生的危險或冒險,給人以忠告,從而可能避免危險或難堪的處境。

warn的用法2：warn只用作及物動詞,可接名詞、代詞、that從句作賓語,也可接由that從句充當直接賓語的雙賓語。warn還可接以介詞短語、動詞不定式充當補足語的複合賓語。

warn的用法3：warn可用於被動結構。

　warn的常用短語：

warn against (v.+prep.)

warn of (v.+prep.)

warn off1 (v.+adv.)

warn off2 (v.+prep.)

warn的用法例句：

1. He spends his spare time visiting schools to warn pupils off drugs.

他用自己的業餘時間訪問學校，告誡小學生遠離毒品。

2. Signs across the entrances warn all visitors to stub out their cigarettes.

入口處的告示牌提醒遊客們熄滅香菸。

3. Lawrence kept on butting me but the referee did not warn him.

勞倫斯不停地用頭撞我，但是裁判並沒有警告他。

4. I must warn you against raising your hopes.

我必須警告你不要期望過高。

5. Analysts warn us away from drawing any conclusions.

分析家勸告我們不要妄下結論。

6. Soon an official appeared to warn them away.

很快一位官員出來勸告他們離開。

7. I'll run ahead and warn them.

我要跑在前頭，警告他們。

8. I tried to warn him, but he wouldn't listen.

我設法提醒過他，可他就是不聽。

9. Did he warn you that he might be late?

他有沒有預先告訴你他可能會遲到?

10. I must warn you that my patience is almost at an end.

我必須警告你我已經沒有耐心了.

11. But I want to warn you now that something might go wrong.

要是砸鍋了,你可別後悔呀!

12. It is incumbent upon you to warn them.

你有責任警告他們.

13. It is my duty to warn you.

我有責任向你提出警告.

14. Economists warn that enormous pressures could build up, forcing people to emigrate westwards.

經濟學家警告，迫使人們向西部遷移的壓力可能會增至很大的程度。

15. Teachers warn today that Latin, Greek and other classics will be squeezed out of school timetables.

老師們今天發出警告說，拉丁語、古希臘語和其他古典文學將被擠出學校的課程表。